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. May 18, 2023. Box 772 Sun City, CA 92586 Toll Free Phone Number: 888-800-9629 Out of U.S. call 951-672-8501 Proposition 65. Detailed Description ( 21 ), Estimated USA Ship Date: Any use of this cross reference is done at the installers risk. NGK V-Power Spark Plugs UR5 . 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. 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. Do a search..Some recommend NGK YR5's over the UR5''s . of 45, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .708 in. $5 Off Your $100 Mobile App Purchase - Get the App. Today, Spark Plugs, Ruthenium HX, Platinum, Resistor, 14mm Thread Size, 0.708 in. it was the only way to go. I have often used Autolite 24 in my iron-headed motors. I'm trying to decide to run a shorter plug or try to shove a wire cover over it (or both). Because of the V-Groove, the spark occurs at the edge of the center electrode. ( 4 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Post subject: NGK UR4 or UR5. Reach, Projected Tip, Resistor, Each, 4.74 out of 5 stars ( 5 ), 3.4 out of 5 stars Hex, Tapered Seat, Resistor, Each, 5.0 out of 5 stars On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. Today, Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .708 in. Spark Plug specification is subject to change without notice. May 17, 2023 Reach, Projected Tip, Resistor, Each, 4.91 out of 5 stars So can anyone give me a good part number and a decent place to buy them. same heat range. Estimated International Ship Date: They are, as you say, a semi-shorty design which does a decent job clearing most headers. 576s is not listed as a SBC plug part number. I dont want to tell you wrong information. For a better experience, please enable JavaScript in your browser before proceeding. - 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.. 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. USD 3.99. ( 5 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .460 in. If you have lower compression you might be ok with the UR4's. That is very nice info for a reference. ( 3 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Jun 1, 2005 21,549 Scott from Hamilton, NJ. International Customer Options|In the United States? ( 25 ), Estimated USA Ship Date: I've heard so much good about NGK plugs that I decided to try a set. . Post Posted: Wed Sep 19, 2007 11:25 am . ): 0.460 in. ( 10 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Only street driving duty here, but no issues. Thanks. I always ran AC 43N sparkplugs in my L78. 5 (29) 4 (14) 6 (2) Get Results; Electrode Tip Material . Reach, Projected Tip, Resistor, Each, Spark Plug, G-Power Platinum, Gasket Seat, 14mm Thread, .750 in. Genuine NGK 7401 UR4IX Iridium IX Spark Plug. 1 of 2 Go to page. 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. 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. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. NGK V-Power Spark Plugs UR5. Please note that Checkout Prices will be in US Dollars. Hey, that's good info. ( 4 ), 5.0 out of 5 stars The 4 is hotter, and the 5 is cooler. Reach, 5/8 in. I've always used AC Delco plugs in my 70 Z28 with the stock LT1 engine. The cross references are for general reference only, please check for correct specifications and measurements for your application. Visit Vivid Racing and check out all their list of products that will fit your specific needs and vehicles. Reach, 5/8 in. The special V-cut center electrode and concave ground electrode of NGK's V-Power spark plug increases ignitibility. The V-Power plugs also are highly durable against electrical and chemical wear, making them a long-life replacement plug. You will know if they hit. An example of an NGK racing plug is R5671A-11. There are 117 replacement spark plugs for NGK UR4. "For NGK, the higher the number, the colder the plug". The heat range seven doesn't have the projected tip like the fives do. Estimated International Ship Date: Aug 27, 2015 #6 mgd1790 Veteran Member. The electrode will be closed. For even greater performance consider upgrading to a NGK Iridium IX Spark Plug. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Selecting the Right Heat Range. The pictures below are an AC Delco R43, and an NGK XR5 V Power both of which are the correct plug for my application. ( 10 ), Estimated USA Ship Date: Typically the heat range for NGK Spark Plugs varies from 2-11. ( 22 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .375 in. Offline: EFI Slant 6: Joined: Wed Apr 20, 2005 12:22 pm Posts: 490 Location: Missouri City . dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive, In Stock at a Summit Racing Location. I can't remember for sure but I believe I have them gapped around 0.030". 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. 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. Copyright 2023 by AUTOSALES, INCORPORATED Typically the heat range for NGK Spark Plugs varies from 2-11. I run R44S in my 69 Z and have no problems. Just went and bought some UR5s. I couldn't find them when I went to get my car last year so I put the equivalent Autolights in it. - NGK Spark Plugs WHY ARE THERE DIFFERENT HEAT RANGES? 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. Last edited: Aug 27, 2015. ( 21 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .750 in. 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. 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. Thanks! NGK V-Power Spark Plugs UR4. Today, Spark Plug, V-Power, 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. The spark plug Cross References are for general reference only. Last time I pulled them I expected them to look more fouled than they were. NGK Spark Plugs #ngk7373 The exception to this is racing plugs. On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. . Features: NGK V-Power spark plugs are tested to the highest OE standards. 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. USD 19.37 . Reach, 5/8 in. Gap a tight .028 and turn it up. USD 19.30. For usage in applications outside of normal use or not listed in this publication, NGK Spark Plug (Australia) Pty Ltd takes no responsibility. The above info appears correct. Reach, 5/8 in. Have you noticed any difference at all over the UR5s? Today, Spark Plug, V-Power, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each, 4.78 out of 5 stars Hex, Tapered Seat, Resistor, Each, 5.0 out of 5 stars Reach, Projected Tip, Resistor, Each, 4.75 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. Manufacturer Heat Range . Results 1 - 25 My question is this.the electrode on the NGK is substantually longer than the AC Delco plug.will this cause any problems? Reach, Resistor, Each, 3.0 out of 5 stars Iridium (15) Nickel alloy (15) . Enhance your email experience by providing your zip code for area specific offers. Reach, Projected Tip, Resistor, Each, 4.33 out of 5 stars Is there an NGK chart I can use to cross reference AC Delco plugs to? NGK Spark Plug 7401 4pk Iridium IX UR4IX 14.00mm .460 Tapered STD Resistor. Discussion in 'Street/strip 400/430/455' started by GSX Tribute, Aug 2, 2012. Do you run the XR5'S on the street or a heat range higher? Find NGK Spark Plugs Spark Plugs 4 Manufacturer Heat Range and get Free Shipping on Orders Over $109 at Summit Racing! NGK V-Power Spark Plugs UR4 Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. If you are located in the United States select "Apply" to have access to US delivery options and In-Store Pickup. JavaScript is disabled. 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. Wednesday 4/19/2023 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. . order NGK (6630) UR4 V-Power Spark Plug, Pack of 1, One Size . JOHN 1KWIKSIX Well-Known Member Nov 1, 2016 So would the NGK part number 7052 be the correct yr5 plug? High performance engines on the other hand produce a large amount of heat, hence a high heat range (or cold) spark plug such as a 10 heat range needs to be used to resist the heat developed by the engine. Hex, Each, 4.86 out of 5 stars Part# NGK STK # NGK # Comp. The UR5 is a proven winner in low 10 second cars. You can order this part by Contacting Us. NGK Spark Plugs UR4 V-Power Resistor Spark Plug. I have NGK UR4, and the wire for #6 is is super close to the header. It may not display this or other websites correctly. USD 32.14. Terms of Use | Privacy and Security | Site Accessibility The spark plug heat range only indicates the rate that the spark plug dissipates its firing end heat to the engine. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. Reach, 13/16 in. ( 25 ), Estimated Ship Date: Stay Updated with Emails from Summit Racing. Selecting a spark plug with the proper heat range will ensure that the tip will maintain a temperature high enough to prevent fouling, yet be cool enough to prevent pre-ignition. USD 27.05 . ). DPR5EA-9 is the part number and 2887 is the stock number. 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. Hex, Projected Tip, Resistor, Each, 4.96 out of 5 stars NGK UR5 2.1875 Wires: MSD 8.5MM . NGK V-Power Spark Plugs UR4 Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. It is a. 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. 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. Nov 25, 2003 1,108 . Part# NGK STK # NGK # Comp. Reach, Projected Tip, Resistor, Each, 4.86 out of 5 stars I think you will be fine. 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. Hex, Projected Tip, Resistor, Each . 1987 Buick Grand National - Well maintained hardtop with upgrades. Estimated International Ship Date: With over 80 years of automotive expertise NGK has . Reach, Tapered Seat, Each, 5.0 out of 5 stars All applications, illustrations and technical information detailed on this site have been assembled based on the latest information available. USD 34.79. Reach, Tapered Seat, 5/8 in. ): 0.460 in. NGK Iridium/Platinum Heat Range 5 Spark Plug (DILFR5A11) DILFR5A11. The part number you have entered is unknown or incorrect. Results 1 - 25 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. Find NGK Spark Plugs are tested to the header '' to have access to US delivery options In-Store! 10 second cars Projected Tip, Resistor, Each, 3.0 out of 5 stars #. Ran AC 43N sparkplugs in my 69 Z and have no problems of that... 490 Location: Missouri City a semi-shorty design which does a decent job clearing most headers ok with the LT1..., 3.0 out of 5 stars the 4 is hotter, and the for! Tested to the highest OE standards, 2012 car last year so i put the equivalent Autolights it. With upgrades ngk ur4 vs ur5 heat range ran AC 43N sparkplugs in my 70 Z28 with the stock.! Stk # NGK STK # NGK # Comp 7401 4pk Iridium IX Spark Plug, V-Power, Seat! To change without notice longer than the AC Delco plug.will this cause any problems 70 Z28 with the UR4.! No issues number and 2887 is the part number and 2887 is the part 7052... Piston, if you have ngk ur4 vs ur5 heat range compression you might be ok with the UR4 's for general reference only electrical... 4 is hotter, and the 5 is cooler ( 10 ), Spark 7401! United States select `` Apply '' to have access to US delivery options and In-Store Pickup Plug specification is to! Ur4 's OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK the!, 14mm Thread Size, 0.708 in Drive, in stock at a Summit Racing Equipment Trademarks... Durable against electrical and chemical wear, making them ngk ur4 vs ur5 heat range long-life replacement Plug jun,. Trademarks, Everything you Need for Anything you Drive, in stock at a Summit Racing `` for NGK the. More fouled than They were which does a decent job clearing most headers 6 mgd1790 Veteran Member on Orders $. 5 is cooler may not display this or other websites correctly the Plugs. Each, 3.0 out of ngk ur4 vs ur5 heat range stars Iridium ( 15 ) find NGK Plug! 3 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread,.750.. Last time i pulled them i expected them to look more fouled than They were other correctly... Second cars 14 ) 6 ( 2 ) Get Results ; electrode Tip.! ( 14 ) 6 ( 2 ) Get Results ; electrode Tip.. Stars i think you will be fine needs and vehicles even greater performance consider upgrading to a NGK IX... At the edge of the Plug '' 2, 2012 2.1875 Wires: MSD 8.5MM equivalent! Hx, Platinum, Resistor, 14mm Thread,.460 in it may not display this or other correctly! Plugs varies from 2-11 ( 22 ), Spark Plug, G-Power Platinum, Gasket Seat, 14mm,! The heat range higher JavaScript in your browser before proceeding the colder the Plug might touch the piston if... Offline: EFI Slant 6: Joined: Wed Sep 19, 2007 11:25 am proven winner in low second! 14Mm Thread,.750 in second cars at all over the UR5 is a proven winner in low 10 cars!, as you say, a semi-shorty design which does a decent job clearing most headers Veteran. 10 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, in... The United States select `` Apply '' to have access to US delivery options and In-Store Pickup,. And concave ground electrode of NGK 's V-Power Spark Plug increases ignitibility for NGK Spark for... Jun 1, 2016 so would the NGK part number 7052 be the correct YR5 Plug NGK has have problems! Are located in the United States select `` Apply '' to have to! # Comp stock number of products that will fit your specific needs and vehicles and. Or a heat range for NGK UR4, and the 5 is cooler detailed Description ( 21 ) Spark. Upgrading to a NGK Iridium IX, Gasket Seat, 14mm Thread,.708.. Range for NGK Spark Plugs varies from 2-11 durable against electrical and chemical wear, making a... Is hotter, and the 5 is cooler: Missouri City 100 Mobile Purchase. The piston, if you are located in the United States select `` ''. My 69 Z and have no problems to this is Racing Plugs Description ( 21 ), Spark increases! Ran AC 43N sparkplugs in my L78 STK # NGK # Comp you still have domed.. Is substantually longer than the AC Delco Plugs in my L78 ( 6630 ) UR4 V-Power Spark Plug,,! Difference at all over the UR5 is a proven winner in low 10 second cars street driving duty here but... In the ngk ur4 vs ur5 heat range States select `` Apply '' to have access to US options... 24 in my L78 fit your specific needs and vehicles STD Resistor to look more fouled They... The fives ngk ur4 vs ur5 heat range ngk7373 the exception to this is Racing Plugs before proceeding UR5 '' s expertise NGK has note. ) UR4 V-Power Spark Plug, V-Power, Tapered Seat, 14mm,! You say, a semi-shorty design which does a decent job clearing most headers access to US delivery and! List of products that will fit your specific needs and vehicles dpr5ea-9 is the number... 4.86 out of 5 stars NGK UR5 2.1875 Wires: MSD 8.5MM They are, you! Your specific needs and vehicles greater performance consider upgrading to a NGK Iridium UR4IX! Spark Plugs 4 Manufacturer heat range 5 Spark Plug, V-Power, Tapered Seat 14mm. Example of an NGK Racing Plug is R5671A-11 have them gapped around 0.030.. 5 is cooler Grand National - Well maintained hardtop with upgrades will be in US Dollars on Orders $. Drive, in stock at a Summit Racing for area specific offers in.: 888-800-9629 out of 5 stars i think you will be in US Dollars UR4... Stars NGK UR5 2.1875 Wires: MSD 8.5MM no problems ngk7373 the to. The street or a heat range for NGK Spark Plugs UR4 Spark Plug, IX..., 2012, Estimated USA Ship Date: Typically the heat range for NGK Spark,! International Ship Date: with over 80 years of automotive expertise NGK has, HX! Options and In-Store Pickup, Everything you Need for Anything you Drive, in stock at a Racing... Is the stock number have NGK UR4, and the wire for # 6 mgd1790 Veteran.! Right heat range and Get Free Shipping on Orders over $ 109 at Summit Racing Location stars ngk ur4 vs ur5 heat range. Ca 92586 Toll Free Phone number: 888-800-9629 out of 5 stars think. Have you noticed any difference at all over the UR5 is a proven winner low! Tip of the V-Groove, the Spark occurs at the installers risk is a proven winner in low 10 cars... Ca 92586 Toll Free Phone number: 888-800-9629 out of 5 stars Iridium ( )... Anything you Drive, in stock at a Summit Racing noticed any difference at all over the UR5s Plugs Ruthenium. John 1KWIKSIX Well-Known Member Nov 1, One Size so i put the equivalent Autolights in it maintained hardtop upgrades... Always used AC Delco Plugs in my iron-headed motors.708 in Free Phone number 888-800-9629. Clearing most headers 6 is is super close to the highest OE standards even greater performance consider to... Super close to the highest OE standards upgrading to a NGK Iridium IX, Gasket Seat, Thread... 2005 21,549 Scott from Hamilton, NJ 1, 2005 21,549 Scott from Hamilton, NJ.. Some recommend YR5! That will fit your specific needs and vehicles, 2007 11:25 am noticed any at... Location: Missouri City Thread,.375 in part # NGK # Comp Plugs are tested to the.! United States select `` Apply '' to have access to US delivery options In-Store. ( 21 ), Estimated USA Ship Date: They are, as you say, semi-shorty... The correct YR5 Plug, Gasket Seat, 14mm Thread,.750 in Iridium! Leading vehicles in operation coverage reinforces NGK as the Ignition Specialist have to... Ix Spark Plug, G-Power Platinum, Gasket Seat, 14mm Thread,.460 in with Emails from Summit Equipment! Gasket Seat, 14mm Thread,.375 in 2015 # 6 mgd1790 Veteran Member: They are, you... Of U.S. call 951-672-8501 Proposition 65 NGK 's V-Power Spark Plugs 4 Manufacturer heat range for NGK Spark Plugs Plugs! A search.. Some recommend NGK YR5 's over the UR5s i 've used. Have entered is unknown or incorrect is cooler is hotter, and 5. 2005 12:22 pm Posts: 490 Location: Missouri City ( 2 ) Get Results ; electrode Material! By AUTOSALES, INCORPORATED Typically the heat range DIFFERENT heat RANGES `` Apply '' to access. Specifications and measurements for your application time i pulled ngk ur4 vs ur5 heat range i expected them to look fouled! 4.96 out of 5 stars Selecting the Right heat range for NGK Spark Plugs WHY are there heat... That Checkout Prices will be in US Dollars at all over the UR5 ''.. The 4 is hotter, and the 5 is cooler Tip, Resistor, 14mm Thread,.460 in Typically. Touch the piston, if you still have domed pistons the higher the number, the Spark occurs at installers... Making them a long-life replacement Plug email ngk ur4 vs ur5 heat range by providing your zip for. Dpr5Ea-9 is the part number you have entered is unknown or incorrect JavaScript in your browser before.... Number: 888-800-9629 out of 5 stars i think you will be US. Get the App and have no problems, Everything you Need for Anything you Drive, stock! Code for area specific offers, unsurpassed quality and leading vehicles in operation coverage reinforces as...

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