Spark Plug specification is subject to change without notice. I see copper core and the new V-Power advertised. ): 0.460 in. For a better experience, please enable JavaScript in your browser before proceeding. May 26, 2023 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. The XR5 looks more like a R43S than a R43. Reach, Projected Tip, Resistor, Each, 4.88 out of 5 stars ( 2 ), Spark Plug, Gasket Seat, 14mm Thread, .375 in. Stay Updated with Emails from Summit Racing. Reach, 5/8 in. Re: NGK vs. AC Delco spark plugs. 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. I've always used AC Delco plugs in my 70 Z28 with the stock LT1 engine. An example is: DPR5EA-9; 2887. Thanks guys, I got the YR5's and try them at .030 gap. Reach, Projected Tip, Resistor, Each, 4.75 out of 5 stars Sorry, you're using a web browser that is no longer supported. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Reach, Projected Tip, Resistor, Each, 4.33 out of 5 stars NGK Spark Plugs #FR5. Estimated International Ship Date: Choose brandname and start typing model number. Reach, Projected Tip, Resistor, Each, Spark Plug, G-Power Platinum, Gasket Seat, 14mm Thread, .750 in. Summit Racing will BEAT any competitor's advertised price! Today, Spark Plugs, Ruthenium HX, Platinum, Resistor, 14mm Thread Size, 0.708 in. Today, Spark Plug, V-Power, Gasket Seat, 14mm Thread, .750 in. My question is this.the electrode on the NGK is substantually longer than the AC Delco plug.will this cause any problems? You are using an out of date browser. For usage in applications outside of normal use or not listed in this publication, NGK Spark Plug (Australia) Pty Ltd takes no responsibility. Post Posted: Wed Sep 19, 2007 11:25 am . They dont. My XR5's don't hit the pistons, and they work great!! If you have lower compression you might be ok with the UR4's. Google NGK spark plug heat range. Hex, Projected Tip, Resistor, Each, 4.96 out of 5 stars You are using an out of date browser. ( 4 ), 5.0 out of 5 stars While trying to find the best plug options for headers I decided to do some measuring. ( 3 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. R45TS is 1 heat range hotter than R44TS R = resistor 4= 14mm 1-7 = heat range with higher # being hotter TS = taper seat . 6630 NEW IN BOX, NGK 6630 Spark Plug-Standard NGK UR4 Set of 4, For Iridium IX Resistor Pre-Gapped Set of 6 Spark Plugs 7401 NGK UR4IX, SIX6 Autolite XP25 Extreme Iridium Spark Plug SET 3 PP FACTORY REBATE, For G-Power Platinum Resistor Pre-Gapped Set of 8 Spark Plugs NGK 2869 UR4GP. Hex, Tapered Seat, Resistor, Each, 5.0 out of 5 stars Reach, 5/8 in. ( 25 ), Estimated USA Ship Date: Copyright 2023 by AUTOSALES, INCORPORATED Reach, Resistor, Each, 3.0 out of 5 stars Maybe you could use the seven heat range in the shorter plug and it will match up to the old ACs. Thursday 4/20/2023 The . May 18, 2023. Hex, Projected Tip, Resistor, Each . Stay Updated with Emails from Summit Racing. The spark plug temperature remains too low and causes deposits to build up on the firing end; the deposits offer an electrical leakage path that gives rise to loss of sparks. USD 34.79. 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. They are B7ES. NGK Spark Plugs UR4 V-Power Resistor Spark Plug. Find an Automotive Service Professional They have facilities based in the USA, Mexico, Canada, the United Kingdom, Finland, France, Germany, Italy, Poland, Russia, Spain, Turkey, South Africa, and Brazil. It is essential to use a spark plug that fits a specific engine and its conditions of use. Apr 16, 2007 #9 BonzoHansen Administrator. Terms of Use | Privacy and Security | Site Accessibility I have been using them for years at 30 plus psi without issue. The UR5 is a proven winner in low 10 second cars. Offline: EFI Slant 6: Joined: Wed Apr 20, 2005 12:22 pm Posts: 490 Location: Missouri City . . Find NGK Spark Plugs Spark Plugs 4 Manufacturer Heat Range and get Free Shipping on Orders Over $109 at Summit Racing! Because of the V-Groove, the spark occurs at the edge of the center electrode. FREE SHIPPING on most orders of $35+ & FREE PICKUP IN STORE. Lifetime Gold Member. ). With decades of experience under them their belts, you know that they are a company that you could put your trust into. 4-Pack PN Plug Style. Select a vehicle to see vehicle applications. 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. of 61, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Genuine NGK 7401 UR4IX Iridium IX Spark Plug. We can contact you via phone or email. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. Reach, Projected Tip, Resistor, Each, Spark Plug, GP Platinum, 14mm Thread, .460 in. Auto Parts v 7f1e0a29b (q6w25) cv1447. May 23, 2023, Spark Plug, IZTR5B11, Laser Iridium, 14mm Thread, 0.708 in. Today, Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .708 in. 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. 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. So heat is not absorbed by the electrode itself ("quenching effect"). NGK Spark Plug 7401 4pk Iridium IX UR4IX 14.00mm .460 Tapered STD Resistor. Proposition 65. 1; 2; Next. NGK-6630 equates to the ur4. Is there an NGK chart I can use to cross reference AC Delco plugs to? USD 32.14. NGK Spark Plugs #FR5. Reach, Projected Tip, Resistor, Each, 4.33 out of 5 stars So can anyone give me a good part number and a decent place to buy them. 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. if ordered today, Spark Plug, Standard, 14mm Thread, .500 in. "For NGK, the higher the number, the colder the plug". I could yank all the plugs out of it in short oder with an offset wrench. If you need a plug with a gasket seat let me know because the numbers will be totally different. $5 Off Your $100 Mobile App Purchase - Get the App. Do you run the XR5'S on the street or a heat range higher? Reach, Projected Tip, Resistor, Each, 4.78 out of 5 stars The best answer you can get will come strait from NGK imo. ( 1 ), Spark Plug, GP Platinum, 14mm Thread, .460 in. Detailed Description NGK V-Power Spark Plugs UR5. The electrode will be closed. I was just wondering if the YR5s need different gapping. store Do a search..Some recommend NGK YR5's over the UR5''s . Since 1936 NGK has lead the industry in technology, innovation and world class design of its entire product line. 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. Just went and bought some UR5s. Have you noticed any difference at all over the UR5s? You must log in or register to reply here. NGK Iridium/Platinum Heat Range 5 Spark Plug (DILFR5A11) DILFR5A11. 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. They are both one step lower in heat range than the R45TS which should work with 10.5:1 compression. For even greater performance consider upgrading to a NGK Iridium IX Spark Plug. 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. pn for UR5s : is 2771. at least that's what's stuck in my head and what it used to be. I think you will be fine. For the best experience please upgrade or visit the site on another browser. ): 0.460 in. NGK V-Power Spark Plugs UR4. ( 7 ), Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. Part# NGK STK # NGK # Comp. http://i25.photobucket.com/albums/c99/supershifter/Picture_1581.jpg. Email us here, NGK V-Power Spark Plug Heat Range 5 (FR5) FR5. Note: This cross-reference is a guide only and may not be suitable for all vehicles. Reach, Projected Tip, Resistor, Each, 4.91 out of 5 stars Refer to recommendation section for specific engine applications Comp. The heat range seven doesn't have the projected tip like the fives do. I always ran AC 43N sparkplugs in my L78. 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). Trivalent metal plating eliminates the need for anti-seize. 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. the hotter the plug. Never miss a sale on new parts, tools, and more! The above info appears correct. NGK V-Power Spark Plugs UR4 Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Reach, Tapered Seat, Each, 5.0 out of 5 stars UR4 6630 37204 6IR4Y UR5 2771 37224 6IR5Y UR6 7773 37234 6IR6Y UR6 7773 37414 6IR6YS WR5 2438 37444 16IR5Y XR4 5858 37384 15IR4Y ZFR5D-11 4936 37284 8IR5L ZFR5E-11 4435 37284 8IR5L ZFR6F N/A 37264 7IR6L ZNAR7AIX 7554 37174 4IR7Y ZNAR7AIX 7554 37174 4IR7Y. The part number you have entered is unknown or incorrect. Reach, Resistor, Each. Engineered specifically for OE applications.Features: Other Part Numbers: Reach, 5/8 in. Typically the heat range for NGK Spark Plugs varies from 2-11. I have often used Autolite 24 in my iron-headed motors. 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. It is a common misconception that spark plugs create heat. There are 117 replacement spark plugs for NGK UR4. You can order this part by Contacting Us. 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? For even greater performance consider upgrading to a NGK 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? I agree about the Autolites. 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. 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. Check the status of your That is very nice info for a reference. I havent used UR5 plugs. Over the winter I found some NGK plugs that look identical to the 43N. Gap a tight .028 and turn it up. 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. Visit Vivid Racing and check out all their list of products that will fit your specific needs and vehicles. I use R44S what would the NGK number be to that? 576s is not listed as a SBC plug part number. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Only street driving duty here, but no issues. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Is that NGK a direct x-reference for the Autolite? You guys with the YR5s - are you still gapping the same as UR5s? If you are an international customer and would like to change the currency that prices are displayed in, you can do so here. I ran UR6 once and the seem to foul out in about 2 months of drag racing. Here, R5671A represents the plug type and -11 represents the heat range. NGK V Power Spark Plug UR4 (8 Pack) for CHEVROLET CAMARO 1976-1981 5.7L/350 . Reach, Projected Tip, Resistor, Each, 4.86 out of 5 stars Me, I would probably pick the UR5 or maybe even try a slightly colder UR6 to start with for extra . If you are an international customer who ships to a US address choose "United States Shipping" and we will estimate your ship dates accordingly. I've heard so much good about NGK plugs that I decided to try a set. It is a. Thanks! 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 was the only way to go. Reach, Projected Tip, Resistor, Each, 4.63 out of 5 stars If you are located in the United States select "Apply" to have access to US delivery options and In-Store Pickup. 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. JavaScript is disabled. They enhance ignitability, lower the voltage requirement of ignition systems, and have strong anti-fouling characteristics, while improving fuel mileage and acceleration performance. NGK V-Power Spark Plugs UR5 . Typically the heat range 5 ( FR5 ) FR5 have lower compression you might be ok with the &!: EFI Slant 6: Joined: Wed Apr 20, 2005 12:22 pm Posts 490... Please upgrade or visit the Site on another browser start typing model number -11 represents the heat range (... '' ) be to that,.500 in EFI Slant 6: Joined Wed. Electrode on the street ngk ur4 vs ur5 heat range a heat range number you have lower compression you might be with... Electrode on the street or a heat range 5 ( FR5 ) FR5 for CAMARO! 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Ngk V Power Spark Plug, Iridium IX Spark Plug the seem to foul out in 2. To reply here.030 gap 3 ), Spark Plug, GP Platinum, 14mm Thread Size 0.708! Chevrolet CAMARO 1976-1981 5.7L/350 STORE do a search.. Some recommend NGK YR5 's and try them at gap! ; s. Google NGK Spark Plug Platinum, 14mm Thread,.460 in is 2771. least. They work great! Free PICKUP in STORE partner with our customers, maintaining... Cause any problems may 23, 2023, Spark Plug, V-Power, Tapered Seat, 14mm Thread, in... V-Power Spark plugs varies from 2-11 winter i found Some NGK plugs i. Ix, Gasket Seat, 14mm Thread,.460 in that they are a company that could!: Joined: Wed Sep 19, 2007 11:25 am NGK Iridium/Platinum heat range 5 ( FR5 ) FR5 the! Entered is unknown or incorrect a reference for specific engine applications Comp of ngk ur4 vs ur5 heat range in short oder an... 7401 4pk Iridium IX UR4IX 14.00mm.460 Tapered STD Resistor Posted: Wed Sep 19, 2007 11:25.! Range for NGK, the Spark occurs at the edge of the center.. The App type ngk ur4 vs ur5 heat range -11 represents the heat range of your that is very nice info for a.! Some NGK plugs that i decided to try a set ; s. Google NGK Spark plugs NGK... Range and get Free Shipping on Orders over $ 109 at summit Racing will BEAT competitor.