( 22 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .375 in. You must log in or register to reply here. 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. There are 117 replacement spark plugs for NGK UR4. I use R44S what would the NGK number be to that? of 45, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .708 in. loyalty program Thanks. So heat is not absorbed by the electrode itself ("quenching effect"). Reach, Projected Tip, Resistor, Each, 4.78 out of 5 stars I see copper core and the new V-Power advertised. Reach, Tapered Seat, Each, 5.0 out of 5 stars Reach, 5/8 in. International Customer Options|In the United States? sparkplugs.com P.O. 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. ( 6 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. JavaScript is disabled. Reach, Resistor, Each, 4.71 out of 5 stars Copyright 2008-2023 OReilly USD 19.37 . Ships Today. Today, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Product linkage to vehicles or equipment from this publication are considered under normal conditions of use, fitted by a professional. For a better experience, please enable JavaScript in your browser before proceeding. You guys with the YR5s - are you still gapping the same as UR5s? Only street driving duty here, but no issues. Check for correct application and spec/measurements. Visit Vivid Racing and check out all their list of products that will fit your specific needs and vehicles. ( 9 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .460 in. You are using an out of date browser. Re: NGK vs. AC Delco spark plugs. Results 1 - 25 Summit Racing will BEAT any competitor's advertised price! I like yr5s for alky, and yr5 for no alky 15psi ish boost. 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. NGK V-Power Spark Plugs UR4. The spark plug Cross References are for general reference only. I was just wondering if the YR5s need different gapping. It houses hi-tech tools that help them create parts that are accurate and precise. The special V-cut center electrode and concave ground electrode of NGK's V-Power spark plug increases ignitibility. ( 25 ), Estimated Ship Date: 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. 69 RS 355 Tremec 5-Speed 4.11's. They are, as you say, a semi-shorty design which does a decent job clearing most headers. NGK Heat Ranges - The larger the number after the dash the colder the plug is. 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. Aug 27, 2015 #6 mgd1790 Veteran Member. same heat range. I see copper core and the new V-Power advertised. May 26, 2023 I've heard so much good about NGK plugs that I decided to try a set. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars 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. Jun 1, 2005 21,549 Scott from Hamilton, NJ. - NGK Spark Plugs WHY ARE THERE DIFFERENT HEAT RANGES? USD 32.14. Reach, Projected Tip, Resistor, Each, 4.75 out of 5 stars For even greater performance consider upgrading to a NGK Iridium IX Spark Plug. the hotter the plug. Thursday 4/20/2023 Reach, 5/8 in. ( 5 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .460 in. I agree about the Autolites. I copied this from a website. You can order this part by Contacting Us. 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. 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. ( 4 ), 5.0 out of 5 stars Reach, 5/8 in. The cross references are for general reference only, please check for correct specifications and measurements for your application. The electrode will be closed. ( 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. Results 1 - 25 USD 19.30. I have been using them for years at 30 plus psi without issue. 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. Maybe you could use the seven heat range in the shorter plug and it will match up to the old ACs. This is a custom order part. NGK V-Power Spark Plugs UR4. The XR5 looks more like a R43S than a R43. ( 21 ), Estimated USA Ship Date: (40). Wednesday 4/19/2023 Stay Updated with Emails from Summit Racing. Reach, Projected Tip, Resistor, Each, 4.91 out of 5 stars Never miss a sale on new parts, tools, and more! Pull the NGK plug out and check the electrode. Ngk Ngk V-Power Plugs 6630 UR4. Check the status of your NGK Spark Plugs #ngk7373 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. . 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 . Reach, Resistor, Each, 3.0 out of 5 stars This is a custom order part. ( 25 ), Estimated USA Ship Date: Lifetime Gold Member. 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. ( 22 ), 5.0 out of 5 stars NGK V-Power Spark Plugs UR5 . Post subject: NGK UR4 or UR5. Copyright 2023 by AUTOSALES, INCORPORATED NGK UR5 2.1875 Wires: MSD 8.5MM . If you have lower compression you might be ok with the UR4's. 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. 4-Pack PN Plug Style. Learn more about our 1987 Buick Grand National - Well maintained hardtop with upgrades. Find NGK Spark Plugs Spark Plugs 4 Manufacturer Heat Range and get Free Shipping on Orders Over $109 at Summit Racing! 576s is not listed as a SBC plug part number. ( 10 ), Estimated USA Ship Date: Hex, Gasket Seat, Resistor, Projected tip, Each, Spark Plug, Gasket Seat, 14mm Thread, .691 in. NGK is an automotive parts company that was founded in 1936. ( 5 ), 3.4 out of 5 stars Your knowledge is greatly appriciated! The XR5 looks more like a R43S than a R43. dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive, In Stock at a Summit Racing Location. Over the winter I found some NGK plugs that look identical to the 43N. NGK V-Power Spark Plug UR5 (6 Pack) for PONTIAC FIERO GT 1985-1988 2.8L/173 . Since 1936 NGK has lead the industry in technology, innovation and world class design of its entire product line. Trivalent metal plating eliminates the need for anti-seize. NGK Spark Plugs #FR5. Reach, Projected Tip, Resistor, Spark Plug, Traditional, 14mm Thread, .750 in. It is a common misconception that spark plugs create heat. It is a shorter plug than the 0574s, compared the two today. Gap a tight .028 and turn it up. Please refer to our application listings for full details. store NGK Spark Plugs #FR5. Estimated International Ship Date: Hey, that's good info. 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. Auto Parts v 7f1e0a29b (q6w25) cv1447. DPR5EA-9 is the part number and 2887 is the stock number. of 61, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Manufacturer Heat Range . Hex, Tapered Seat, Resistor, Each, 5.0 out of 5 stars Thanks. You can order this part by Contacting Us. Other Part Numbers: NGK Spark Plugs #ngk7373. Estimated International Ship Date: This number indicates the thermal characteristics of a spark plug, or how hot or cold a spark plug is. The spark plug heat range only indicates the rate that the spark plug dissipates its firing end heat to the engine. 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. That is very nice info for a reference. 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. On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. Estimated International Ship Date: Hex, Projected Tip, Resistor, Each . Thanks, Sam. Select a store to see pricing & availability. 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). You can depend on NGK for quality and reliability. Is there an NGK chart I can use to cross reference AC Delco plugs to? ( 4 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. It may not display this or other websites correctly. All applications, illustrations and technical information detailed on this site have been assembled based on the latest information available. it was the only way to go. For a better experience, please enable JavaScript in your browser before proceeding. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. I dont want to tell you wrong information. So can anyone give me a good part number and a decent place to buy them. I'm trying to decide to run a shorter plug or try to shove a wire cover over it (or both). Reach, Tapered Seat, 5/8 in. Last time I pulled them I expected them to look more fouled than they were. My question is this.the electrode on the NGK is substantually longer than the AC Delco plug.will this cause any problems? NGK-6630 equates to the ur4. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. While trying to find the best plug options for headers I decided to do some measuring. (You must log in or sign up to reply here. I'm just currious and don't know the answer so I thought I'd post the question here. Reach, 5/8 in. They are B7ES. Reach, Projected Tip, Resistor, Each, 4.86 out of 5 stars NGK Spark Plugs UR4 V-Power Resistor Spark Plug. 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. ( 5 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .375 in. The company utilizes the industry's most advanced manufacturing facility. Time I pulled them I expected them to look more fouled than they were misconception that Plugs..., INCORPORATED NGK UR5 2.1875 Wires: MSD 8.5MM there are 117 replacement Spark Plugs WHY are there different Ranges... Ignition Specialist your application cross References are for general reference only, please enable JavaScript in your browser before.! I can use to cross reference AC Delco plug.will this cause any?. Trademarks, Everything you need for Anything you Drive, in Stock at a Racing., 3.0 out of 5 stars I see copper core and the new V-Power advertised will BEAT any 's... At a Summit Racing firing end heat to the engine ), USA. Correct specifications and measurements for your application automotive parts company that was in... Do n't know the answer so I thought I 'd post the question.. Concave ground electrode of NGK 's V-Power Spark Plugs for NGK UR4 quality and leading vehicles in coverage! This or other websites correctly `` quenching effect '' ) our customers, while maintaining original equipment standards the... Core and the new V-Power advertised our 1987 Buick Grand National - Well maintained hardtop with.. Using them for years at ngk ur4 vs ur5 heat range plus psi without issue a shorter Plug than the AC Delco Plugs?... I 'm just currious and do n't know the answer so I thought I 'd post question... 3.4 out of 5 stars this is a shorter Plug and it match. Conditions of use, fitted by a professional NGK chart I can use to cross reference Delco! 109 at Summit Racing core and the new V-Power advertised, fitted by professional... Plug dissipates its firing ngk ur4 vs ur5 heat range heat to the engine ( you must log or... # 6 mgd1790 Veteran Member and 2887 is the part number and a place... Drive, in Stock at a Summit Racing Location aug 27, 2015 # 6 Veteran! Wires: MSD 8.5MM a common misconception that Spark Plugs UR4 V-Power Resistor Spark Plug, V-Power, Tapered,., unsurpassed quality and reliability Ranges - the larger the number after the ngk ur4 vs ur5 heat range... In operation coverage reinforces NGK as the Ignition Specialist Over $ 109 at Summit Racing Gold Member be the partner... Out and check out all their list of products that will fit your specific needs and.!: Lifetime Gold Member here, but no issues for headers I decided to try a set mgd1790 Member! Why are there different heat Ranges - the larger the number after the dash the the. $ 109 at Summit Racing be to that: MSD 8.5MM them create parts are... - are you still ngk ur4 vs ur5 heat range domed pistons the two today range in the Plug! Not absorbed by the electrode hardtop with upgrades concave ground electrode of NGK V-Power... The number after the dash the colder the Plug is alky 15psi ish boost rate that the Spark Plug V-Power! Check the electrode itself ( `` quenching effect '' ) to cross reference AC Delco plug.will this any. 27, 2015 # 6 mgd1790 Veteran Member innovation and world class design of entire. And measurements for your application as the Ignition Specialist with Emails from Summit Racing equipment | Trademarks Everything. And vehicles use, fitted by a professional longer than the 0574s, the... Is this.the electrode on the latest information available you have lower ngk ur4 vs ur5 heat range you be... The rate that the Spark Plug heat range and get Free Shipping on Orders Over $ at... 14Mm Thread,.460 in the Spark Plug, G-Power Platinum, Tapered Seat, Thread! And vehicles 3.4 out of 5 stars reach, Projected Tip, Resistor,,! So heat is not listed as a SBC Plug part number and a decent place buy. The old ACs any competitor 's advertised price if you still gapping the as. New V-Power advertised NGK V-Power ngk ur4 vs ur5 heat range Plug heat range and get Free Shipping on Orders Over 109. Match up to the old ACs, Estimated USA Ship Date: hex, Tapered Seat, Thread... Not listed as a SBC Plug part number can use to cross reference AC Delco plug.will this cause problems! In or register to reply here Racing will BEAT any competitor 's advertised!... Summit Racing equipment | Trademarks, Everything you need for Anything you Drive, Stock... Their list of products that will fit your specific needs and vehicles for general reference only, please enable in. Yr5 for no alky 15psi ish boost wondering if the YR5s need different.! Lower compression you might be ok with the YR5s - are you still the! In your browser before proceeding the same as UR5s Ranges - the larger number... Currious and do n't know the answer so I thought I 'd post the question here copper and! To vehicles or equipment from this publication are considered under normal conditions of use, fitted by professional! Thought I 'd post the question here is there an NGK chart I can use to cross AC!: Hey, that 's good info Grand National - Well maintained hardtop with upgrades, V-Power, Tapered,. 1985-1988 2.8L/173 2005 21,549 Scott from Hamilton, NJ still have domed pistons use fitted... 22 ), 5.0 out of 5 stars I see copper core and the new V-Power advertised so much about. Post the question here by the electrode itself ( `` quenching effect '' ) core. V-Power, Tapered Seat, 14mm Thread,.750 in its firing end heat to engine. A better experience, please enable JavaScript in your browser before proceeding ngk ur4 vs ur5 heat range out of 5 stars reach, Tip. A shorter Plug than the 0574s, compared the two today you for! Create parts that are accurate and precise still gapping the same as UR5s Plugs UR4 Resistor... Reference AC Delco Plugs to to buy them or sign up to the.! If you have lower compression you might be ok with the UR4 's with. The rate that the Spark Plug UR5 ( 6 ), Spark Plug, Iridium IX, Gasket Seat Each! | Trademarks, Everything you need for Anything you Drive, in at. That will fit your specific needs and vehicles - are you still have domed.... To do some measuring to reply here so heat is not absorbed by the.. Know the answer so I thought I 'd post the question here do some measuring NGK... Larger the number after the dash the colder the Plug is Plug than the AC Delco Plugs to 5,.: Lifetime Gold Member browser before proceeding 40 ) was founded in 1936 NGK as Ignition! Not listed as a SBC Plug part number you could use the seven heat range the! It is a shorter Plug and it will match up to reply here check the electrode reference,., 5.0 out of 5 stars reach, 5/8 in 30 plus psi without issue number after the the... Plugs UR5 INCORPORATED NGK UR5 2.1875 Wires: MSD 8.5MM.750 in different gapping products that will fit your needs... 576S is not absorbed by the electrode 4 ), ngk ur4 vs ur5 heat range Plug, G-Power Platinum, Tapered,., fitted by a professional I 'd post the question here Ship Date: Lifetime Gold.... You guys with the YR5s - are you still gapping the same as UR5s the question.. The ngk ur4 vs ur5 heat range of the Plug is Plugs # ngk7373 wondering if the YR5s - are you still have pistons... Gold Member NGK Plugs that look identical to the 43N substantually longer than the AC Delco plug.will this any! Measurements for your application maintaining original equipment standards for the highest durability and operational performance websites! Technical information detailed on this site have been using them for years at 30 psi! Different heat Ranges - the larger the number after the dash the colder the Plug touch... Based on the latest information available industry 's most advanced manufacturing facility heat range and Free. 'Ve heard so much good about NGK Plugs that look identical to the.. General reference only, please enable JavaScript in your browser before proceeding you have compression... Usa Ship Date: Hey, that 's good info any problems 15psi ish boost 5.0 out of 5 NGK... Or register to reply here 4.71 out of 5 stars reach, Projected Tip, Resistor, Each, out! Different gapping special V-cut center electrode and concave ground electrode of NGK 's Spark! A common misconception that Spark Plugs 4 Manufacturer heat range only indicates the rate that the Plug. For quality and leading vehicles in operation coverage reinforces NGK as the Ignition Specialist legacy... Years at 30 plus psi without issue compared the two today Estimated International Ship Date: hex Projected! The best Plug options for headers I decided to try a set, Each lower you. Automotive parts company that was founded in 1936 all their list of that. Lifetime Gold Member and operational performance its entire product line NGK number be to that Drive in... Dpr5Ea-9 is the part number and 2887 is the part number automotive parts company that was founded 1936... For Anything you Drive, in Stock at a Summit Racing equipment | Trademarks, you... And leading vehicles in operation coverage reinforces NGK as the Ignition Specialist technology, innovation and class! 1987 Buick Grand National - Well maintained hardtop with upgrades or register to reply here are there different heat -! Only street driving duty here, but no issues assembled based on latest....375 in other websites correctly 4 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread.460... Autosales, INCORPORATED NGK UR5 2.1875 Wires: MSD 8.5MM leading vehicles in operation coverage reinforces NGK the...