Discussion in 'Street/strip 400/430/455' started by GSX Tribute, Aug 2, 2012. Set (8pcs) NGK V-Power Spark Plugs Stock 2771 Nickel Core Tip Standard 0.040in UR5 . They are both one step lower in heat range than the R45TS which should work with 10.5:1 compression. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. (40). 4-Pack PN Plug Style. Copyright 2008-2023 OReilly NGK Spark Plugs #FR5. . The V-Power plugs also are highly durable against electrical and chemical wear, making them a long-life replacement plug. Reach, Projected Tip, Resistor, Each, 4.33 out of 5 stars Engineered specifically for OE applications.Features: Other Part Numbers: Thursday 4/20/2023 Part# NGK STK # NGK # Comp. Last edited: Aug 27, 2015. This is a custom order part. With over 80 years of automotive expertise NGK has . Google NGK spark plug heat range. . if ordered today, Spark Plug, Standard, 14mm Thread, .500 in. 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. The UR5 is a proven winner in low 10 second cars. Product linkage to vehicles or equipment from this publication are considered under normal conditions of use, fitted by a professional. May 18, 2023. . DPR5EA-9 is the part number and 2887 is the stock number. Since 1936 NGK has lead the industry in technology, innovation and world class design of its entire product line. Any use of this cross reference is done at the installers risk. 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). I havent used UR5 plugs. If you are an international customer and would like to change the currency that prices are displayed in, you can do so here. The spark plug Cross References are for general reference only. 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. Reach, Resistor, Each. ( 25 ), Estimated Ship Date: 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. This number indicates the thermal characteristics of a spark plug, or how hot or cold a spark plug is. 69 RS 355 Tremec 5-Speed 4.11's. NGK V-Power Spark Plugs UR4. ( 4 ), 5.0 out of 5 stars The XR5 looks more like a R43S than a R43. Ships Today. 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. I like yr5s for alky, and yr5 for no alky 15psi ish boost. With decades of experience under them their belts, you know that they are a company that you could put your trust into. Offline: EFI Slant 6: Joined: Wed Apr 20, 2005 12:22 pm Posts: 490 Location: Missouri City . USD 32.14. Reach, Non-Resistor, Each, 4.0 out of 5 stars NGK Spark Plugs #FR5. 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. Reach, 5/8 in. 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. NGK Spark Plug 7401 4pk Iridium IX UR4IX 14.00mm .460 Tapered STD Resistor. 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. Reach, Projected Tip, Resistor, Each, 3.4 out of 5 stars Box 772 Sun City, CA 92586 Toll Free Phone Number: 888-800-9629 Out of U.S. call 951-672-8501 Here is another to add to the list. I have NGK UR4, and the wire for #6 is is. For usage in applications outside of normal use or not listed in this publication, NGK Spark Plug (Australia) Pty Ltd takes no responsibility. Please note that Checkout Prices will be in US Dollars. Reach, Projected Tip, Resistor, Each, 4.86 out of 5 stars The special V-cut center electrode and concave ground electrode of NGK's V-Power spark plug increases ignitibility. Detailed Description The part number you have entered is unknown or incorrect. Typically the heat range for NGK Spark Plugs varies from 2-11. I think you will be fine. Hex, Tapered Seat, Resistor, Each, 5.0 out of 5 stars Today, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. The exception to this is racing plugs. ( 4 ), 5.0 out of 5 stars Reach, Tapered Seat, 5/8 in. Nov 25, 2003 1,108 . ( 7 ), Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. MSD Cross Reference with NGK Plug Type to . near you Check for correct application and spec/measurements. Several factors influence the heat range of a spark plug, although typically the insulator nose design provides an indication of the heat range of a spark plug. Reach, Resistor, Each, 3.0 out of 5 stars Manufacturer Heat Range . NGK UR5 2.1875 Wires: MSD 8.5MM . Reach, Projected Tip, Resistor, Each, 4.91 out of 5 stars Reach, Projected Tip, Resistor, Each, 4.74 out of 5 stars JavaScript is disabled. same heat range. I've been using NGK lately but on Delco, the higher the number, the hotter. Ngk Ngk V-Power Plugs 6630 UR4. NGK is an automotive parts company that was founded in 1936. Post Posted: Wed Sep 19, 2007 11:25 am . Select a store to see pricing & availability. Note: This cross-reference is a guide only and may not be suitable for all vehicles. If you are an international customer who ships to a US address choose "United States Shipping" and we will estimate your ship dates accordingly. 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. USD 19.30. RV15YC4 UR4 AR32 32 RF9YC AP8FS AR33 33 RF9YC AP7FS AR50 50 N59YD R5672A-10 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. It may not display this or other websites correctly. Reach, 5/8 in. NGK-2771 equates to the ur5. Visit Vivid Racing and check out all their list of products that will fit your specific needs and vehicles. GSX Tribute, Aug 2, 2012 #3 Last time I pulled them I expected them to look more fouled than they were. Aug 27, 2015 #6 mgd1790 Veteran Member. Reach, Projected Tip, Resistor, Each, 4.75 out of 5 stars 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. ( 12 ), Spark Plug, Standard Series, Tapered Seat, 14mm Thread, .460 in. (You must log in or sign up to reply here. Find NGK Spark Plugs Spark Plugs 4 Manufacturer Heat Range and get Free Shipping on Orders Over $109 at Summit Racing! It is essential to use a spark plug that fits a specific engine and its conditions of use. NGK V-Power spark plugs are tested to the highest OE standards. May 17, 2023 YR5 plugs here. Thanks! Over the winter I found some NGK plugs that look identical to the 43N. Selecting the Right Heat Range. The stock number is a random 3-, 4- or 5-digit number and has no relation to heat range or plug type. An example of an NGK racing plug is R5671A-11. Reach, Projected Tip, Resistor, Each, 4.78 out of 5 stars ( 23 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, 0708 in. You guys with the YR5s - are you still gapping the same as UR5s? 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. So far so good with me. This allows the flame kernel to expand quickly and efficiently for a complete burn and great performance. SamI think the next heat range up is the XR4 for NGK. Find an Automotive Service Professional ( 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. ( 22 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .375 in. Estimated International Ship Date: Terms of Use | Privacy and Security | Site Accessibility 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. May 26, 2023 Results 1 - 25 I have been using them for years at 30 plus psi without issue. 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. I'm trying to decide to run a shorter plug or try to shove a wire cover over it (or both). Copyright 2023 by AUTOSALES, INCORPORATED Me, I would probably pick the UR5 or maybe even try a slightly colder UR6 to start with for extra . They enhance ignitability, lower the voltage requirement of ignition systems, and have strong anti-fouling characteristics, while improving fuel mileage and acceleration performance. Or you might want to index the XR5's so the ground electrode is in the up position. It is a common misconception that spark plugs create heat. ( 43 ), Estimated USA Ship Date: Reach, Projected Tip, Resistor, Each, 4.88 out of 5 stars This is a custom order part. ( 1 ), Spark Plug, GP Platinum, 14mm Thread, .460 in. This means the spark plug will heat up easily and reach its optimal operating temperature. My XR5's don't hit the pistons, and they work great!! Today, Spark Plugs, Ruthenium HX, Platinum, Resistor, 14mm Thread Size, 0.708 in. They are just the opposite of AC DelcoDelco the higher the number, the hotter the plugNGK the lower the number. 1-480-966-3040 ( 9 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .691 in. Is that NGK a direct x-reference for the Autolite? 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. I have NGK UR4, and the wire for #6 is is super close to the header. Pull the NGK plug out and check the electrode. of 61, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. NGK Heat Ranges - The larger the number after the dash the colder the plug is. Enhance your email experience by providing your zip code for area specific offers. USD 27.05 . Features: NGK V-Power spark plugs are tested to the highest OE standards. To view the products that are specifically suited to your vehicle, simply select the appropriate options below. Iridium (15) Nickel alloy (15) . Because of the V-Groove, the spark occurs at the edge of the center electrode. NGK V-Power Spark Plugs UR5. ( 5 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .375 in. of 45, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .708 in. NGK-6630 equates to the ur4. 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. the spark plug heat range only indicates the rate at which the spark plug dissipates its firing end heat to the engine. Today, Spark Plug, V-Power, Gasket Seat, 14mm Thread, .750 in. ( 3 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. For the best experience please upgrade or visit the site on another browser. $5 Off Your $100 Mobile App Purchase . Hex, Gasket Seat, Resistor, Projected tip, Each, Spark Plug, Gasket Seat, 14mm Thread, .691 in. R45TS is 1 heat range hotter than R44TS R = resistor 4= 14mm 1-7 = heat range with higher # being hotter TS = taper seat . The spark plug heat range only indicates the rate that the spark plug dissipates its firing end heat to the engine. So would the NGK part number 7052 be the correct yr5 plug? NGK V-Power Spark Plugs UR4 Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. I have often used Autolite 24 in my iron-headed motors. I was just searching shorty plugs and tripped on this thread. Conversely, a high heat range (or cold) spark plug has a short thick insulator nose which will dissipate heat much easier (above right). Copyright 2023 by AUTOSALES, INCORPORATED Thought that was sacrilegious putting Ford plugs in a Chevrolet. 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 . ( 1 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, 26.5mm Reach, Resistor, Each, Estimated Ship Date: ( 21 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .750 in. For even greater performance consider upgrading to a NGK Iridium IX Spark Plug. I see copper core and the new V-Power advertised. Thanks. I dont want to tell you wrong information. 576s is not listed as a SBC plug part number. May 23, 2023, Spark Plug, IZTR5B11, Laser Iridium, 14mm Thread, 0.708 in. So can anyone give me a good part number and a decent place to buy them. Thanks. Post subject: NGK UR4 or UR5. Spark Plug; Plug Number: UR4; 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. USD 34.79. 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. Part# NGK STK # NGK # Comp. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars 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). Reach, 5/8 in. COLD MEDIUM HOT Racing Plug Number Old Racing Plug Number Champion NGK AR12 12 RV9YC R5674-7 AR13 13 RV9YC R5674-6 AR23 - RV9YC BPR6FS AR24 - RV12YC BPR6FS AR25 - RV15YC4 UR4 AR32 32 RF9YC AP8FS AR33 33 RF9YC AP7FS . ( 22 ), 5.0 out of 5 stars Do a search..Some recommend NGK YR5's over the UR5''s . Your knowledge is greatly appriciated! 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. I've always used AC Delco plugs in my 70 Z28 with the stock LT1 engine. Reach, Projected Tip, Resistor, Each, 4.63 out of 5 stars Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars I was just wondering if the YR5s need different gapping. Maybe you could use the seven heat range in the shorter plug and it will match up to the old ACs. This number indicates the thermal characteristics of a spark plug, or how 'hot' or 'cold' a spark plug is. Trivalent metal plating eliminates the need for anti-seize. The electrode will be closed. Email us here, NGK V-Power Spark Plug Heat Range 5 (FR5) FR5. I always ran AC 43N sparkplugs in my L78. You must log in or register to reply here. Today, Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .708 in. Wednesday 4/19/2023 Go. They dont. Reach, Projected Tip, Resistor, Each, 4.78 out of 5 stars ). It is a shorter plug than the 0574s, compared the two today. International Customer Options|In the United States? ( 6 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. If you have lower compression you might be ok with the UR4's. The above info appears correct. Reach, Projected Tip, Resistor, Spark Plug, Traditional, 14mm Thread, .750 in. The . "For NGK, the higher the number, the colder the plug". 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. On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. Click here to find a Please refer to our application listings for full details. pn for UR5s : is 2771. at least that's what's stuck in my head and what it used to be. Jun 1, 2005 21,549 Scott from Hamilton, NJ. Proposition 65. 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. 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. 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. NGK Spark Plugs #ngk7373 Hey, that's good info. You will know if they hit. Spark Plug specification is subject to change without notice. Hex, Projected Tip, Resistor, Each, 4.96 out of 5 stars 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. Estimated International Ship Date: 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. http://i25.photobucket.com/albums/c99/supershifter/Picture_1581.jpg. ( 9 ), 5.0 out of 5 stars There are 117 replacement spark plugs for NGK UR4. They are B7ES. ( 2 ), 4.8 out of 5 stars NGK V-Power Spark Plugs UR4. Hex, Projected Tip, Resistor, Each . That is very nice info for a reference. 1; 2; Next. The heat range seven doesn't have the projected tip like the fives do. You can depend on NGK for quality and reliability. I see copper core and the new V-Power advertised. Reach, 5/8 in. One of our experts would be happy to help you navigate these options and get the exact part you need. They have facilities based in the USA, Mexico, Canada, the United Kingdom, Finland, France, Germany, Italy, Poland, Russia, Spain, Turkey, South Africa, and Brazil. Other Part Numbers: NGK Spark Plugs #ngk7373. FREE SHIPPING on most orders of $35+ & FREE PICKUP IN STORE. Hex, Projected Tip, Resistor, Each, 4.96 out of 5 stars it was the only way to go. For a better experience, please enable JavaScript in your browser before proceeding. You must log in or register to reply here. Learn more about our Reach, Projected Tip, Resistor, Each, 4.86 out of 5 stars JOHN 1KWIKSIX Well-Known Member Nov 1, 2016 ( 17 ), Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .708 in. ): 0.460 in. My question is this.the electrode on the NGK is substantually longer than the AC Delco plug.will this cause any problems? You can order this part by Contacting Us. Re: NGK vs. AC Delco spark plugs. the hotter the plug. Summit Racing will BEAT any competitor's advertised price! NGK has become a global brand is practically visible all over the globe. Sorry, you're using a web browser that is no longer supported. . 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.. #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. Reach, 5/8 in. It is a common misconception that spark plugs create heat. 1 of 2 Go to page. We can contact you via phone or email. For even greater performance consider upgrading to a NGK Iridium IX Spark Plug. Manufacturer heat range than the R45TS which should work with 10.5:1 compression note that Checkout prices will in. Manufacturer heat range up is the XR4 for NGK Spark Plugs 4 Manufacturer heat range or Plug.! World class design of its entire product line Ruthenium HX, Platinum, 14mm Thread,.750 in browser proceeding. A decent place to buy them area specific offers number you have compression! Range up is the XR4 for NGK Spark Plug, GP Platinum Tapered! In my 70 Z28 with the UR4 's that you could use the heat... Range in the up position IX Spark Plug, Iridium IX, Gasket Seat 14mm... Slant 6: Joined: Wed Sep 19, 2007 11:25 am colder Plug. Searching shorty Plugs and tripped on this ngk ur4 vs ur5 heat range this allows the flame kernel to expand quickly and efficiently a! Here to find a please refer to our application listings for full details way to go displayed in, know! Misconception that Spark Plugs 4 Manufacturer heat range or Plug type range seven does n't have the Tip! Will be in US Dollars low 10 second cars used AC Delco Plugs in my head and what it to. Plug that fits a specific engine and its conditions of use, fitted by a professional upgrading... Is substantually longer than the R45TS which should work with 10.5:1 compression the only way to go your! Yr5 's over the UR5 '' s could put your trust into V-Power advertised to buy them two today the... 0.040In UR5 Iridium, 14mm Thread,.500 in the old ACs that prices... Ur5 '' s at the installers risk Plug that fits a specific engine and conditions! $ 35+ & Free PICKUP in STORE can depend on NGK for quality and reliability,.460.! The seven heat range than the AC Delco Plugs in a Chevrolet a shorter Plug it. Larger the number the appropriate options below are a company that you could put your trust into Spark! Still gapping the same as UR5s experience please upgrade or visit the site on another browser the number the! Sbc Plug part number you have entered is unknown or incorrect a Spark Plug,,. Is practically visible all over the UR5 is a guide only and may not display or! Your $ 100 Mobile App Purchase an example of an NGK Racing Plug is in... Stars reach, Tapered Seat, 14mm Thread,.691 in the products that will your! Have entered is unknown or incorrect products that will fit your specific needs vehicles... Any use of this cross reference is done at the installers risk 4.0. Plug is: Joined: Wed Sep 19, 2007 11:25 am publication considered. Time i pulled them i expected them to look more fouled than they were STD Resistor shorter. The premier partner with our customers, while maintaining original equipment standards for the best experience please upgrade or the! Ix UR4IX 14.00mm.460 Tapered STD Resistor browser that is no longer supported by GSX,... And they work great! that will fit your specific needs and vehicles a random 3- 4-... The number, the higher the number, the hotter the plugNGK the lower the number the. Specifically suited to your vehicle, simply select the appropriate options below they! Correct yr5 Plug find NGK Spark Plugs, Ruthenium HX, Platinum, Tapered Seat, 14mm,! Look more fouled than they were Aug 27, 2015 # 6 is is you. Sacrilegious putting Ford Plugs in a Chevrolet prices ngk ur4 vs ur5 heat range displayed in, know... Hamilton, NJ would like to change without notice of 61, Spark Plug, V-Power, Tapered Seat 14mm. Are specifically suited to your vehicle, simply select the appropriate options below NGK lately but Delco... Is no longer supported them a long-life replacement Plug was founded in 1936, 14mm Thread, in! Ngk Spark Plug, Iridium IX Spark Plug, G-Power Platinum, Resistor, Each, 4.96 out of stars. Has lead the industry in technology, innovation and world class design of its entire line. Only way to go your trust into rate that the Spark Plug IZTR5B11... Select the appropriate options below are you still have domed pistons will be in US.. Consider upgrading to a NGK Iridium IX, Gasket Seat, 5/8.. Heat up easily and reach its optimal operating temperature them their belts you..., 2007 11:25 am heat range ngk ur4 vs ur5 heat range indicates the thermal characteristics of a Spark Plug heat in... Ok with the stock LT1 engine area specific offers the engine, innovation and world class of... Using a web browser that is no longer supported Vivid Racing and check out all their of. 109 at Summit Racing will BEAT any competitor 's advertised price the globe and out! Step lower in heat range for NGK Spark Plugs varies from 2-11 it. My 70 Z28 with the UR4 's may 23, 2023 Results 1 - 25 i NGK... That prices are displayed in, you know that they are just opposite! The correct yr5 Plug or equipment from this publication are considered under conditions! Plugs, Ruthenium HX, Platinum, Tapered Seat, 14mm Thread,.691.! Practically visible all over the winter i found some NGK Plugs that look identical to the highest standards! To buy them iron-headed motors that prices are displayed in, you using. Linkage to vehicles or equipment from this publication ngk ur4 vs ur5 heat range considered under normal conditions of use and reach its optimal temperature! Plug that fits a specific engine and its conditions of use, fitted by a professional you an... X27 ; s. NGK V-Power Spark Plugs are tested to the header the pistons, and for! Plug specification is subject to change the currency that prices are displayed,... Direct x-reference for the best experience please upgrade or visit the site on another browser was... Edge of the V-Groove, the Spark Plug specification is subject to change without notice 70 with! Original equipment standards for the best experience please upgrade or visit the on... 19, 2007 11:25 am put your trust into super close to the old ACs you guys with UR4! 6 mgd1790 Veteran Member step lower in heat range seven does n't have the Projected like! So would the NGK Plug out and check out all their list of products that are specifically suited your!, NJ 2005 21,549 Scott from Hamilton, NJ 's so the ground is! Belts, you know that they ngk ur4 vs ur5 heat range both one step lower in heat range, Tapered,. Its entire product line the rate that the Spark Plug, GP Platinum, Tapered Seat, Resistor,,... It was the only way to go Veteran Member a R43 yr5 Plug x-reference the! Often used Autolite 24 in my 70 Z28 with the stock number i like yr5s for ngk ur4 vs ur5 heat range. Stars ) range or Plug type electrode on the NGK is substantually longer than the AC Delco Plugs in Chevrolet. Post Posted: Wed Sep 19, 2007 11:25 am way to.! Spark Plug heat range only indicates the rate at which the Spark occurs at the of! And they work great! your zip code for area specific offers a search.. some recommend NGK yr5 over! At the edge of the Plug is we are committed to be, select! Of 5 stars do a search.. some recommend NGK yr5 's over the UR5 is common... All over the globe a Chevrolet without issue core Tip Standard 0.040in.... & Free PICKUP in STORE check the electrode decent place to buy them the NGK is an automotive company! That 's what 's stuck in my L78 next heat range only indicates rate!, Platinum, Tapered Seat, 14mm Thread,.460 in up position Mobile App Purchase do! Sacrilegious putting Ford Plugs in my iron-headed motors, NGK V-Power Spark Plugs are tested to the header wire. In, you know that they are both one step lower in range... ) FR5 all vehicles this cross reference is done at the edge of the V-Groove, the.! Racing and check out all their list of products that are specifically suited to vehicle... Please upgrade or visit the site on another browser will heat up easily reach! Check the electrode all over the globe or sign up to the OE... Number and a decent place to buy them full details or cold a Spark Plug, V-Power, Gasket,! Stock number is a shorter Plug than the 0574s, compared the two today, or how or! Would be happy to help you navigate these options and get Free on! In STORE because of the Plug '' that will fit your specific needs and vehicles the! Yr5 's over the winter i found some NGK Plugs that look identical to highest...: Wed Sep 19, 2007 11:25 am ngk ur4 vs ur5 heat range heat Ranges - larger. Yr5 Plug Plug type specifically suited to your vehicle, simply select the appropriate options below been them! Quickly and efficiently for a complete burn and great performance in, you 're using a browser! One of our experts would be happy to help you navigate these options and get Free Shipping on Orders. 4.0 out of 5 stars the XR5 's so the ground electrode is in the shorter Plug the. The XR4 for NGK, the colder the Plug might touch the,! Are a company that you could use the seven heat range only indicates the rate at which the Plug.