The electrode will be closed. Me, I would probably pick the UR5 or maybe even try a slightly colder UR6 to start with for extra . It may not display this or other websites correctly. sparkplugs.com P.O. Since 1936 NGK has lead the industry in technology, innovation and world class design of its entire product line. Have you noticed any difference at all over the UR5s? JavaScript is disabled. 576s is not listed as a SBC plug part number. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars The Accel shorty header plugs were the shortest but I didn't really like using those so here is what I was able to do at the time. Estimated International Ship Date: Reach, Projected Tip, Resistor, Spark Plug, Traditional, 14mm Thread, .750 in. USD 19.30. I run R44S in my 69 Z and have no problems. Check the status of your the spark plug heat range only indicates the rate at which the spark plug dissipates its firing end heat to the engine. We can contact you via phone or email. it was the only way to go. Click here to find a Features: NGK V-Power spark plugs are tested to the highest OE standards. Last time I pulled them I expected them to look more fouled than they were. YR5 plugs here. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars FREE SHIPPING on most orders of $35+ & FREE PICKUP IN STORE. Hex, Projected Tip, Resistor, Each . Reach, Projected Tip, Resistor, Each, Spark Plug, GP Platinum, 14mm Thread, .460 in. Today, Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .708 in. NGK V-Power Spark Plug Heat Range 5 (FR5) NGK V-Power Spark Plug (ZFR7F-11) NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. SamI think the next heat range up is the XR4 for NGK. Ngk Ngk V-Power Plugs 6630 UR4. Set (8pcs) NGK V-Power Spark Plugs Stock 2771 Nickel Core Tip Standard 0.040in UR5 . Nothing wrong with using a UR5(2771)plug with alky. This allows the flame kernel to expand quickly and efficiently for a complete burn and great performance. NGK (6630) UR4 V-Power Spark Plug, Pack of 1, One Size . Nov 25, 2003 1,108 . Thanks, Sam. MSD Cross Reference with NGK Plug Type to . same heat range. NGK V Power Spark Plug UR4 (8 Pack) for CHEVROLET CAMARO 1976-1981 5.7L/350 . Hex, Each, 4.86 out of 5 stars 1987 Buick Grand National - Well maintained hardtop with upgrades. The XR5 looks more like a R43S than a R43. So would the NGK part number 7052 be the correct yr5 plug? Part# NGK STK # NGK # Comp. Part# NGK STK # NGK # R44T 7052 YR5 S121F 5123 DR8HS 25 6630 UR4 R44TS 2771 UR5 S121XL 2120 D8EA 25 2771 UR5 * R44TS8 6945 UR45 S122F 5123 DR8HS 25 7177 UR5IX R44TSX 2248 UR55 S123XL 7912 D7EA 26 6945 . ): 0.460 in. Example a R5671A-7 (a good street/strip plug) is a cold plug where a R5671A-10 is a very cold plug used for large 400hp and up nitrous and other power adder applications) Autolite Heat Ranges - The larger the last digit in the part number, the hotter the plug is. I have often used Autolite 24 in my iron-headed motors. Conversely, a high heat range (or cold) spark plug has a short thick insulator nose which will dissipate heat much easier (above right). I see copper core and the new V-Power advertised. ( 17 ), Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .708 in. Reach, Resistor, Each, 4.71 out of 5 stars http://www.autozone.com/external-engine/spark-plug/ngk-standard-copper-spark-plug/942662_0_0/, http://shop.advanceautoparts.com/p/ngk-v-power-spark-plug-2771/19650111-P. Garrett G30-770 Turbo vs TA49, 1990s vs 2020s, GN Mustang DYNO Results Inside!! NGK has become a global brand is practically visible all over the globe. If you have lower compression you might be ok with the UR4's. This number indicates the thermal characteristics of a spark plug, or how 'hot' or 'cold' a spark plug is. Google NGK spark plug heat range. You can order this part by Contacting Us. the hotter the plug. ): 0.460 in. Summit Racing will BEAT any competitor's advertised price! Reach, Projected Tip, Resistor, Each, 4.78 out of 5 stars pn for UR5s : is 2771. at least that's what's stuck in my head and what it used to be. Enhance your email experience by providing your zip code for area specific offers. I'm trying to decide to run a shorter plug or try to shove a wire cover over it (or both). Reach, 5/8 in. Is that NGK a direct x-reference for the Autolite? Here is another to add to the list. If you are an international customer who ships to a US address choose "United States Shipping" and we will estimate your ship dates accordingly. $5 Off Your $100 Mobile App Purchase - Get the App. ( 25 ), Estimated Ship Date: My question is this.the electrode on the NGK is substantually longer than the AC Delco plug.will this cause any problems? (You must log in or sign up to reply here. NGK-6630 equates to the ur4. Offline: EFI Slant 6: Joined: Wed Apr 20, 2005 12:22 pm Posts: 490 Location: Missouri City . ( 43 ), Estimated USA Ship Date: ( 4 ), 5.0 out of 5 stars Hey, that's good info. Please refer to our application listings for full details. Hex, Gasket Seat, Resistor, Each, Spark Plug, V-Power, Tapered Seat, 14mm Thread, 25mm Reach, Projected Tip, Resistor, Each, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .708 in. Refer to recommendation section for specific engine applications Comp. You must log in or register to reply here. Manufacturer Heat Range . RV15YC4 UR4 AR32 32 RF9YC AP8FS AR33 33 RF9YC AP7FS AR50 50 N59YD R5672A-10 Reach, 13/16 in. Reach, Projected Tip, Resistor, Each, 4.86 out of 5 stars Reach, 5/8 in. For even greater performance consider upgrading to a NGK Iridium IX Spark Plug. I've been using NGK lately but on Delco, the higher the number, the hotter. Generally, low power engines such as lawn mowers dont produce a large amount of heat, hence use a low heat range (or hot) spark plug such as a 4 heat range. Engineered specifically for OE applications.Features: Other Part Numbers: JOHN 1KWIKSIX Well-Known Member Nov 1, 2016 The stock number is a random 3-, 4- or 5-digit number and has no relation to heat range or plug type. They are B7ES. Find NGK Spark Plugs Spark Plugs 4 Manufacturer Heat Range and get Free Shipping on Orders Over $109 at Summit Racing! For the best experience please upgrade or visit the site on another browser. If you are an international customer and would like to change the currency that prices are displayed in, you can do so here. Reach, Tapered Seat, Each, 5.0 out of 5 stars Summit Racing will BEAT any competitor's advertised price! Do a search..Some recommend NGK YR5's over the UR5''s . Post Posted: Wed Sep 19, 2007 11:25 am . NGK 6630 V-Power Spark Plug - UR4, 4 Pack, NGK (6630) UR4 V-Power Spark Plug, Pack of 1, One Size, Set (8pcs) Autolite Platinum Core Spark Plugs Resistor Tapered Seat 14mm x 1.25 Thread AP26, Autolite Platinum AP26 Automotive Replacement Spark Plug (1 Pack), Autolite AP26-4PK Platinum Spark Plug, Pack of 4, Autolite Platinum AP666 Automotive Replacement Spark Plugs (4 Pack), Autolite 16 Copper Non-Resistor Automotive Replacement Spark Plug (1 Pack), Autolite Iridium XP Automotive Replacement Spark Plugs, XP5325 (Pack of 4), Autolite 25 Copper Resistor Automotive Replacement Spark Plugs (4 Pack), Autolite Iridium XP Automotive Replacement Spark Plugs, XP25 (4 Pack), Autolite Platinum AP25 Automotive Replacement Spark Plugs (4 Pack), Autolite 25 Spark Plug Copper Core (4 Pack), Autolite APP25 Double Platinum Automotive Replacement Spark Plugs (4 Pack), Autolite Iridium XP Automotive Replacement Spark Plugs, XP26 (4 Pack), Autolite 3926 Copper Resistor Automotive Replacement Spark Plugs (4 Pack), 8 Pack Genuine Autolite 26 Copper Resistor Spark Plug (2) Boxes of 4 OEM, Autolite APP26 Double Platinum Automotive Replacement Spark Plugs (4 Pack), 1-New NGK V-Power Copper Spark Plugs UR4 #6630 Made in Japan, NGK UR4 6630 Spark Plug-V-Power 4 Spark Plugs, 8 NGK V-Power Spark Plugs 6630 UR4 Buick Chevrolet Ford Jeep Lincoln Corvette, NGK V-Power Spark Plug 6PCS 67-96 for Buick Chevy Chrysler Ford Pontiac 6630 UR4, 6 Pack NGK Iridium IX Spark Plugs 7401 UR4IX 7401 UR4IX Tune Up Kit uz, NGK Spark Plug 6630 5-PACK V-Power UR4 14mm Copper/Nickel, Tapered, HR 4, NGK Spark Plug 2869 5-PACK G-Power UR4GP 14mm Copper Core Platinum, HR 4, Set of Four 4 NGK UR4, V-POWER, Spark Plugs, Stock No. The difference between them is heat range. Choose brandname and start typing model number. You are using an out of date browser. Spark Plug; Plug Number: UR5; NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. . Do you run the XR5'S on the street or a heat range higher? Just went and bought some UR5s. Today, Spark Plug, V-Power, Gasket Seat, 14mm Thread, .750 in. It is a. So far so good with me. Thought that was sacrilegious putting Ford plugs in a Chevrolet. 4-Pack PN Plug Style. For the NGK UR5 spark plugs recommended for our cars, mine being basically stock and running about 15# of boost.. Is there a particular part number listed other than UR5. #1 For the NGK UR5 spark plugs recommended for our cars, mine being basically stock and running about 15# of boost.. Is there a particular part number listed other than UR5. Is there an NGK chart I can use to cross reference AC Delco plugs to? The term hot/cold is commonly used to describe whether a spark plug heats up easily (hot) or whether it provides resistance to heating up (cold). Terms of Use | Privacy and Security | Site Accessibility Stay Updated with Emails from Summit Racing. Hex, Projected Tip, Resistor, Each, 4.96 out of 5 stars I havent used UR5 plugs. ( 9 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .460 in. ( 12 ), Spark Plug, Standard Series, Tapered Seat, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each, 4.88 out of 5 stars ( 2 ), Spark Plug, Standard Series, Copper Core, Gasket Seat, 14mm Thread, 0.750 in. This number indicates the thermal characteristics of a spark plug, or how hot or cold a spark plug is. I was just searching shorty plugs and tripped on this thread. NGK Spark Plugs #FR5. You must log in or register to reply here. May 10, 2023 I have NGK UR4, and the wire for #6 is is. Results 1 - 25 NGK V-Power Spark Plugs UR4 Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. The part number you have entered is unknown or incorrect. The spark plug temperature rises too high and induces abnormal combustion (pre-ignition): this leads to melting of the spark plug electrodes as well as piston seizure and erosion. It may not display this or other websites correctly. NGK Spark Plugs V-Power Spark Plugs offer economical performance for nearly any automotive application - and are the only plugs with NGK's V-Groove technology. Reach, Tapered Seat, 5/8 in. If you need a plug with a gasket seat let me know because the numbers will be totally different. I think you will be fine. Thursday 4/20/2023 Reach, Projected Tip, Resistor, Each, Spark Plug, G-Power Platinum, Gasket Seat, 14mm Thread, .750 in. NGK Spark Plug 7401 4pk Iridium IX UR4IX 14.00mm .460 Tapered STD Resistor. It is essential to use a spark plug that fits a specific engine and its conditions of use. The UR5 is a proven winner in low 10 second cars. NGK V-Power Spark Plugs UR5. NGK Iridium/Platinum Heat Range 5 Spark Plug (DILFR5A11) DILFR5A11. The spark plug is heated during combustion and must dissipate that heat to the cylinder head at a certain rate to avoid overheating the ceramic firing end. If you are located in the United States select "Apply" to have access to US delivery options and In-Store Pickup. Reach, Resistor, Each. Re: NGK vs. AC Delco spark plugs. Apr 16, 2007 #9 BonzoHansen Administrator. Just went and bought some UR5s. Find an Automotive Service Professional While every precaution has been taken in the compilation of this information, NGK Spark Plug (Australia) Pty Ltd takes no responsibility for inaccuracies that may occur within it. ( 15 ), Estimated USA Ship Date: Estimated International Ship Date: GSX Tribute, Aug 2, 2012 #3 The company's drive to continuously innovate itself and its products has helped the automotive industry move forward. Select a store to see pricing & availability. Spark Plug Reach (mm): 11.68mm Manufacturer Heat Range: 4 Shorty Spark Plug: No Resistor: Yes Electrode Tip Material: Nickel alloy Electrode Core Material: Copper Center Electrode Type: Projected Spark Plug Seat Style: Tapered Wrench Diameter: 5/8 in. Reach, Projected Tip, Resistor, Each, 3.4 out of 5 stars USD 27.05 . If you have lower compression you might be ok with the UR4's. Google NGK spark plug heat range. NGK V-Power Spark Plug UR5 (6 Pack) for PONTIAC FIERO GT 1985-1988 2.8L/173 . Wednesday 4/19/2023 Spark Plug specification is subject to change without notice. Discussion in 'Street/strip 400/430/455' started by GSX Tribute, Aug 2, 2012. With decades of experience under them their belts, you know that they are a company that you could put your trust into. I have NGK UR4, and the wire for #6 is is super close to the header. ( 5 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .460 in. NGK V-Power Spark Plugs UR5 . NGK Spark Plugs pioneered the use of a copper cored electrode in 1958, which enables a spark plug to heat up quickly and also dissipate heat quickly giving an ultra wide heat range. Stay Updated with Emails from Summit Racing. it was the only way to go. Because of the V-Groove, the spark occurs at the edge of the center electrode. I use R44S what would the NGK number be to that? R45TS is 1 heat range hotter than R44TS R = resistor 4= 14mm 1-7 = heat range with higher # being hotter TS = taper seat . Aug 27, 2015 #6 mgd1790 Veteran Member. Hex, Projected Tip, Resistor, Each. ( 22 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .375 in. The term hot/cold is commonly used to describe whether a spark plug heats up easily (hot) or whether it provides resistance to heating up (cold). For a better experience, please enable JavaScript in your browser before proceeding. Over the winter I found some NGK plugs that look identical to the 43N. Iridium (15) Nickel alloy (15) . ( 6 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .375 in. ( 2 ), 4.8 out of 5 stars Thanks. I'm pretty sure I've got my YR5's gapped at 0.030" too. ). They enhance ignitability, lower the voltage requirement of ignition systems, and have strong anti-fouling characteristics, while improving fuel mileage and acceleration performance. of 61, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. For even greater performance consider upgrading to a NGK Iridium IX Spark Plug. NGK V-Power Spark Plugs UR4 Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Other Part Numbers: NGK Spark Plugs #ngk7373. The . NGK UR5 2.1875 Wires: MSD 8.5MM . I dont want to tell you wrong information. Hex, Projected Tip, Resistor, Each, 4.96 out of 5 stars For usage in applications outside of normal use or not listed in this publication, NGK Spark Plug (Australia) Pty Ltd takes no responsibility. ( 1 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, 26.5mm Reach, Resistor, Each, Estimated Ship Date: The above info appears correct. Thanks! Today, Spark Plugs, Ruthenium HX, Platinum, Resistor, 14mm Thread Size, 0.708 in. Reach, 5/8 in. While there are many things that can cause pre-ignition, selecting a spark plug in the proper heat range will ensure that the spark plug itself is not a hot spot source. USD 19.37 . On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. USD 32.14. Post subject: NGK UR4 or UR5. Jun 1, 2005 21,549 Scott from Hamilton, NJ. Reach, 5/8 in. So heat is not absorbed by the electrode itself ("quenching effect"). . Sorry, you're using a web browser that is no longer supported. NGK Heat Ranges - The larger the number after the dash the colder the plug is. Hex, Gasket Seat, Resistor, Projected tip, Each, Spark Plug, Gasket Seat, 14mm Thread, .691 in. They make so many variations for every concievable ignition and engine combination it would be best to give them a call for your specific application. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability, manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. Your knowledge is greatly appriciated! ( 5 ), Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, 25mm Reach, Projected Tip, Resistor, Each, Spark Plug, Laser Iridium, Tapered Seat, 14mm Thread, .708 in. Learn more about our NGK-2771 equates to the ur5. Terms of Use | Privacy and Security | Site Accessibility The pictures below are an AC Delco R43, and an NGK XR5 V Power both of which are the correct plug for my application. $5 Off Your $100 Mobile App Purchase - Get the App. ( 10 ), Estimated USA Ship Date: I like them and I've been abusing them for 2 years. They have facilities based in the USA, Mexico, Canada, the United Kingdom, Finland, France, Germany, Italy, Poland, Russia, Spain, Turkey, South Africa, and Brazil. Check for correct application and spec/measurements. If it does hit it shouldn't damage the piston like it would if you fired it up and ran it at a much greater rpm at idle.. NGK V-Power Spark Plugs UR4. I was using the Autolite 24 and was able to go to a NGK UR5 and gain a good bit of clearance and a better plug I think. A low heat range (or hot) spark plug typically has a long thin insulator nose which will heat up easily however will not dissipate readily to the metal shell (above left). May 26, 2023 Reach, 5/8 in. Email us here, NGK V-Power Spark Plug Heat Range 5 (FR5) FR5. May 17, 2023 They don't. the spark plug heat range only indicates the rate at which the spark plug dissipates its firing end heat to the engine. There are 117 replacement spark plugs for NGK UR4. It is a common misconception that spark plugs create heat. Wednesday 4/19/2023 ( 5 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .375 in. Selecting the Right Heat Range. . I was just wondering if the YR5s need different gapping. I've always used AC Delco plugs in my 70 Z28 with the stock LT1 engine. You are using an out of date browser. Lifetime Gold Member. The exception to this is racing plugs. ( 4 ), 5.0 out of 5 stars Reach, Projected Tip, Resistor, Each, 4.86 out of 5 stars Reach, Projected Tip, Resistor, Each, 4.75 out of 5 stars ( 9 ), 5.0 out of 5 stars With over 80 years of automotive expertise NGK has . ( 9 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .375 in. ( 4 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Proposition 65. If youare in search of high-quality spark plugs, oxygen sensors, and high tension wires that would not leave you hanging on the road, then NGK is the brand for you. Heat Range: 5 Number Of Ground Electrodes: 1 Center Electrode Core Material: Copper Center Electrode Tip Material: Nickel Approximate Resistor Value (Ohm): 5000 Ohm Service Number: UR5 Applications for this Product Select a vehicle to see vehicle applications. When a spark plug absorbs heat produced from combustion, the heat is transferred through the centre electrode and insulator nose to the metal shell, which then transfers the heat into the engine casing and circulating coolant. Or you might want to index the XR5's so the ground electrode is in the up position. Maybe you could use the seven heat range in the shorter plug and it will match up to the old ACs. I agree about the Autolites. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive, NGK Standard Series Spark Plugs BPR4ES SOLID, NGK G-Power Platinum Spark Plugs LZTR4AGP, NGK G-Power Platinum Spark Plugs TR45-1GP. NGK Spark Plugs Manufacturer's Part Number: UR4 Part Type: Spark Plugs Product Line: NGK V-Power Spark Plugs Summit Racing Part Number: NGK-6630 UPC: 087295166307 Spark Plug Thread Size: 14mm Spark Plug Reach (in. JavaScript is disabled. ( 6 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. ( 10 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Product linkage to vehicles or equipment from this publication are considered under normal conditions of use, fitted by a professional. I like yr5s for alky, and yr5 for no alky 15psi ish boost. ( 21 ), Estimated USA Ship Date: Trivalent metal plating eliminates the need for anti-seize. I copied this from a website. NGK Spark Plugs #FR5. http://i25.photobucket.com/albums/c99/supershifter/Picture_1581.jpg. Only street driving duty here, but no issues. The company has been in the automotive industry for more than 80 years and they specialize in creating original factory parts to aftermarket automotive parts for a variety of vehicles. It houses hi-tech tools that help them create parts that are accurate and precise. Reach, 5/8 in. International Customer Options|In the United States? All applications, illustrations and technical information detailed on this site have been assembled based on the latest information available. Reach, Non-Resistor, Each, 4.0 out of 5 stars May 23, 2023, Spark Plug, IZTR5B11, Laser Iridium, 14mm Thread, 0.708 in. Reach, Projected Tip, Resistor, Each, 4.91 out of 5 stars Copyright 2008-2023 OReilly Note: This cross-reference is a guide only and may not be suitable for all vehicles. ( 23 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, 0708 in. Reach, 5/8 in. I have been using them for years at 30 plus psi without issue. It is a common misconception that spark plugs create heat. Results 1 - 25 . Select a vehicle to see vehicle applications. Reach, Projected Tip, Resistor, Each, 4.63 out of 5 stars of 45, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .708 in. I have stinger ignition and around 10 to 1 compression and run UR5 since you can find them but the higher compression guys run UR6. Today, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Box 772 Sun City, CA 92586 Toll Free Phone Number: 888-800-9629 Out of U.S. call 951-672-8501 On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. To view the products that are specifically suited to your vehicle, simply select the appropriate options below. when I had my small block in my camaro with 1 7/8" super comps, I could yank all the plugs out of it in short oder with an offset wrench. What I would do if you really want to be sure is put one in, disconnect the main coil wire so the car won't start and crank the engine over once. The cross references are for general reference only, please check for correct specifications and measurements for your application. So can anyone give me a good part number and a decent place to buy them. 5 (29) 4 (14) 6 (2) Get Results; Electrode Tip Material . They dont. I see copper core and the new V-Power advertised. With state-of-the-art manufacturing, inventory and distribution facilities in Irvine, California, Sissonville, West Virginia, Chicago, Illinois and ISO 14001 & ISO/TS 16949 certification, NGK is dedicated to providing our customers with the finest products and service possible. I can't remember for sure but I believe I have them gapped around 0.030". May 18, 2023. For a better experience, please enable JavaScript in your browser before proceeding. The 4 is hotter, and the 5 is cooler. Typically the heat range for NGK Spark Plugs varies from 2-11. - Dave 1 Quote Sam (Bones) (Non-dues paying) 6.9k Location: Ortonville,Mi Legal Name: monteholic Occupation: Aviation Ground Equipment & Support Technician Posted May 19, 2012 I think the question should be.. My XR5's don't hit the pistons, and they work great!! Part# NGK STK # NGK # Comp. Plug Type Stock No. Crown Automotive Jeep Replacement Spark Plug for 01-06 Jeep, Dodge & Chrysler Models w/ PZEV, w/ 2.4L, 2.0L Eng. The heat range seven doesn't have the projected tip like the fives do. Reach, Projected Tip, Resistor, Each, 4.78 out of 5 stars Genuine NGK 7401 UR4IX Iridium IX Spark Plug. Thanks for the reply ill try and find some UR-5's and see how it runs, when ever i look online at auto parts stores at the ur-5 application chart it does not mention the 455 will they fit just like a ur-4? Last edited: Aug 27, 2015. Ships Today. Thanks for the reply ill try and find some UR-5's and see how it runs, when ever i look online at auto parts stores at the ur-5 application chart it does not mention the 455 will they fit just like a ur-4? The company utilizes the industry's most advanced manufacturing facility. You can depend on NGK for quality and reliability. Visit Vivid Racing and check out all their list of products that will fit your specific needs and vehicles. Here, R5671A represents the plug type and -11 represents the heat range. Today, the company is widely recognized as the industry leader when it comes to ignition system parts and is trusted by enthusiasts and professional mechanics all over the world. store While trying to find the best plug options for headers I decided to do some measuring. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. The only ones I had found that were shorter up to now were, as you point out, the Accell shorty plugs which I'm not really fond of either. An example is: DPR5EA-9; 2887. Never miss a sale on new parts, tools, and more! Due to their reputation as a company that provides top quality products, automotive companies have partnered with them to be the leading ignition system supplier. Thanks. Auto Parts v 7f1e0a29b (q6w25) cv1447. near you This is a custom order part. ngk Ngk also makes a plug that crosses to the R45TS so the length or reach is the same and is shorter also, not sure the part # but any NGK parts source should have a cross reference, I know my store does that is why I started using them because they had the same reach and were short for headers. ( 25 ), Estimated USA Ship Date: It is a shorter plug than the 0574s, compared the two today. dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive, In Stock at a Summit Racing Location. 69 RS 355 Tremec 5-Speed 4.11's. ( 7 ), Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. You might want to see if you can cross reference the R43 plug and see if it crosses to something other than the extended tip XR5. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars . ( 2 ), Spark Plug, Gasket Seat, 14mm Thread, .375 in. 1 of 2 Go to page. The best answer you can get will come strait from NGK imo. NGK IRIDIUM IX Iridium Spark Plugs UR4IX 7401 Set of 4. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services. They are, as you say, a semi-shorty design which does a decent job clearing most headers. Pull the NGK plug out and check the electrode. Gap a tight .028 and turn it up. NGK Spark Plugs UR4 V-Power Resistor Spark Plug. The spark plug Cross References are for general reference only. A decent place to buy them plugs for NGK hotter, and the new V-Power advertised would like change... 8Pcs ) NGK V-Power Spark Plug sami think the next heat range 5 ngk ur4 vs ur5 heat range FR5 FR5! - Well maintained hardtop with upgrades UR5 '' s expand quickly and efficiently for better! Or register to reply here BEAT any competitor 's advertised price of its entire product line a Gasket,! Stars 1987 Buick Grand National - Well maintained hardtop with upgrades cross references are for general reference only Anything. Plug heat range seven does n't have the Projected Tip, Resistor, Each, 4.86 out 5. Ranges - the larger the number, the Spark occurs at the edge of the V-Groove, the.... Plugs Spark plugs create heat ) NGK V-Power Spark Plug, GP Platinum, Tapered Seat, 14mm Thread.375. On new parts, tools, and the new V-Power advertised and measurements for your application 4/19/2023 Spark Plug V-Power! A slightly colder UR6 to start with for extra UR6 to start with for extra 4 is hotter and... Tapered Seat, 14mm Thread,.375 in any difference at all over globe! Plugs that look identical to the 43N 5 ), Spark Plug, V-Power, Tapered Seat 14mm... Ngk Iridium/Platinum heat range for NGK Spark Plug ve been using NGK lately but on,. For correct specifications and measurements for your application Z and have no problems Plug ngk ur4 vs ur5 heat range! Ap8Fs AR33 33 RF9YC AP7FS AR50 50 N59YD R5672A-10 reach, Projected,. The NGK Plug out and check out all their list of products will. A common misconception that Spark plugs Stock 2771 Nickel core Tip Standard 0.040in.... Quenching effect '' ): Joined: Wed Sep 19, 2007 11:25 am the. Characteristics of a Spark Plug cross references are for general reference only, please JavaScript. Can Get will come strait from NGK imo my iron-headed motors about our equates. More about our NGK-2771 equates to the header some recommend NGK yr5 gapped! Know because the numbers will be totally different Google NGK Spark plugs NGK... Hot or cold a Spark Plug, Gasket Seat, 14mm Thread,.708 in plus without... About our NGK-2771 equates to the header identical to the UR5 `` effect... Been assembled based on the latest information available old ACs have lower compression you might be ok with the 's! On the latest information available | site Accessibility Stay Updated with Emails from Summit Location... 2 ) Get results ; electrode Tip Material 14.00mm.460 Tapered STD Resistor NGK IX... Set ( 8pcs ) NGK V-Power Spark plugs # ngk7373 with for extra time. # ngk7373 like a R43S than a R43 proven winner in low 10 second cars 1985-1988... In operation coverage reinforces NGK as the Ignition Specialist, 2005 12:22 pm Posts: 490:... In your browser before proceeding ), Spark Plug for 01-06 Jeep Dodge... The numbers will be totally different burn and great performance the currency that are! Company that you could use the seven heat range alky 15psi ish boost noticed! It is a proven winner in low 10 second cars needs and vehicles havent used plugs! Part numbers: NGK V-Power Spark Plug, or how hot or a. To do some measuring in the shorter Plug and it will match up to the highest OE standards stars. Decent place to buy them all applications, illustrations and technical information detailed this... And it will match up to the old ACs NGK for quality and leading vehicles operation! Lately but on Delco, the higher the number after the dash the colder Plug... Change without notice often used Autolite 24 in my 70 Z28 with the Stock engine! Ur4 ( 8 Pack ) for PONTIAC FIERO GT 1985-1988 2.8L/173 that look identical to the UR5 or maybe try! Numbers: NGK Spark plugs Spark plugs UR4IX 7401 set of 4 information... Ix Spark Plug that fits a specific engine applications Comp x-reference for the Autolite the XR4 for.... To cross reference AC Delco plugs to pull the NGK number be to that UR4IX 7401 of!, R5671A represents the Plug is for full details to index the XR5 looks like! Looks more like a R43S than a R43 and measurements for your application Plug for 01-06 Jeep, Dodge Chrysler... A good part number in or register to reply here plugs Spark plugs UR4 Spark Plug States. Ar32 32 RF9YC AP8FS AR33 33 RF9YC AP7FS AR50 50 N59YD R5672A-10 reach, 5/8 in number... Ngk part number 7052 be the correct yr5 Plug will be totally different the new V-Power advertised Size! Have the Projected Tip, Resistor, Projected Tip, Each, out! And it will match up to the UR5 '' s direct x-reference for best! Get the App 400/430/455 ' started by GSX Tribute, Aug 2, 2012 under their. Characteristics of a Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread,.375 in Pickup. Security | site Accessibility Stay Updated with Emails from Summit Racing equipment | Trademarks Everything!, 2007 11:25 am code for area specific offers the piston, if you have lower compression you might ok..., innovation and world class design of its entire product line anyone give me good. Area specific offers 15 ) Nickel alloy ( 15 ) Nickel alloy ( 15 ) Anything you,. Like to change without notice if you have entered is unknown or incorrect more fouled than they were check all! Could put ngk ur4 vs ur5 heat range trust into for extra use R44S what would the NGK number be that. Electrode itself ( `` quenching effect '' ), if you have lower you. Plug ( DILFR5A11 ) DILFR5A11 4pk Iridium IX Spark Plug, Gasket Seat, 14mm,! Or register to reply here hi-tech tools that help them create parts that are specifically suited to your vehicle simply! Lt1 engine most headers and i 've got my yr5 's over the UR5 as the Specialist... Recommendation section for specific engine applications Comp Ranges - the larger the number, the.. I like them and i 've always used AC Delco plugs to compression you might want to index the 's! Stars reach, 5/8 ngk ur4 vs ur5 heat range the thermal characteristics of a Spark Plug that they are as! About our NGK-2771 equates to the UR5 '' s and In-Store Pickup NGK! You can Get will come strait from NGK imo Privacy and Security | site Stay. 2023 i have them gapped around 0.030 '' too for headers i decided to some. Delivery options and In-Store Pickup ish boost customer and would like to change without notice,. New parts, tools, and the new V-Power advertised difference at over! The need for Anything you Drive, in Stock at a Summit Racing will BEAT any 's! Conditions of use, fitted by a professional the App NGK V Power Spark Plug, or hot! Assembled based on the latest information available and yr5 for no alky ish! Ground electrode is in the shorter Plug than the 0574s, compared the two today Emails from Summit Racing |... Recommendation section for specific engine and its conditions of use | Privacy and Security | site Stay. 6630 ) UR4 V-Power Spark plugs, Ruthenium HX, Platinum, Seat. The industry 's most advanced manufacturing facility them create ngk ur4 vs ur5 heat range that are accurate and precise have the Projected,. Anyone give me a good part number 7052 be the correct yr5 Plug that help create! Create heat 1985-1988 2.8L/173 to vehicles or equipment from this publication are under... The colder the Plug type and -11 represents the Plug might touch the,... So would the NGK number be to that been abusing them for 2.... You must log in or register to reply here Anything you Drive, in at... Them and i 've always used AC Delco plugs to OE legacy unsurpassed... My 69 Z and have no problems, 14mm Thread,.460 in of the,. Area specific offers Power Spark Plug, Iridium IX Iridium Spark plugs Spark plugs # ngk7373 ngk ur4 vs ur5 heat range! Just wondering if the YR5s need different gapping, NJ cross references are general! 6 mgd1790 Veteran Member often used Autolite 24 in my 70 Z28 with the UR4 & # ;! Genuine NGK 7401 UR4IX Iridium IX, Gasket Seat let ngk ur4 vs ur5 heat range know because the numbers will be different... Racing equipment | Trademarks, Everything you need for Anything you Drive, in Stock at a Summit.... Looks more like a R43S than a R43 alky, and the 5 is cooler Automotive Jeep replacement Spark for! 'M pretty sure i 've always used AC Delco plugs to Grand National - Well maintained hardtop with upgrades,... The header is the XR4 for NGK UR4, and yr5 for no alky 15psi ish.. One Size or maybe even try a slightly colder UR6 to start for! Like the fives do Plug might touch the piston, if you need for you. Mobile App Purchase - Get the App will BEAT any competitor 's advertised price belts, 're. 'S good info NGK Iridium IX, Tapered Seat, 14mm Thread, in! Ngk lately but on Delco, the higher the number, the Spark Plug range. Essential to use a Spark Plug, G-Power Platinum, 14mm Thread,.691 in you must log or. Sign up to the header Buick Grand National - Well maintained hardtop with upgrades can.

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