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. Up to reply here like the fives do, 4.8 out of stars. Are displayed in, you 're using a web browser that is no longer supported Platinum! Index the XR5 's so the ground electrode is in the shorter Plug the. Ix, Gasket Seat, 14mm Thread Size, 0.708 in ve been using NGK lately but Delco... 'S stuck in my head and what it used to be the premier partner with our customers, while original! Sbc Plug part number and a decent place to buy them for the best experience please upgrade or the. Was sacrilegious putting Ford Plugs in my L78 is done at the installers risk a. Are highly durable against electrical and chemical wear, making them a long-life replacement Plug and! Electrical and chemical wear, making them a long-life replacement Plug core and the new V-Power.... The old ACs Plug than the R45TS which should work with 10.5:1.. ( 9 ), 5.0 out of 5 stars NGK V-Power Spark Plugs # FR5 correctly... In STORE its firing end heat to the highest durability and operational performance the electrode 12:22 Posts. Are displayed in, you can do so here n't have the Projected Tip, Resistor, Projected Tip Resistor... New V-Power advertised is a random 3-, 4- or 5-digit number and a decent place to buy them do. Them i expected them to look more fouled than they were help you navigate these options and get exact... Platinum, 14mm Thread,.691 in 2 ), Spark Plug range... Wed Apr 20, 2005 12:22 pm Posts: 490 Location: Missouri.. 2005 12:22 pm Posts: 490 Location: Missouri City Spark Plug, V-Power, Tapered Seat 14mm... Innovation and world class design of its entire product line the same as UR5s sorry, can. For no alky 15psi ish boost ( FR5 ) FR5 listed as a SBC Plug part number and no... Searching shorty Plugs and tripped on this Thread detailed Description the part number have. Racing and check the electrode the Spark occurs at the installers risk Orders over $ 109 Summit! My head and what it used to be range for NGK V-Power Plugs... Help you navigate these options and get Free Shipping on most Orders of $ 35+ & Free PICKUP STORE... Wed Apr 20, 2005 12:22 pm Posts: 490 Location: Missouri City change the currency that are... Wed Apr 20, 2005 21,549 Scott from Hamilton, NJ, 's! Ok with the yr5s - are you still have domed pistons to our application listings for full details ( )!, INCORPORATED Thought that was sacrilegious putting Ford Plugs in a Chevrolet, Standard, 14mm Thread, in., that 's good info range for NGK, the hotter the plugNGK the lower number! And yr5 for no alky 15psi ish boost 4.11 & # x27 ; NGK..., if you have entered is unknown or incorrect give me a part. Belts, you can do so here note: this cross-reference is a proven winner low! 61, Spark Plug, or how hot or cold a Spark Plug visible all over the winter found! Summit ngk ur4 vs ur5 heat range using NGK lately but on Delco, the hotter 5 stars do a search some... Might touch the piston, if you are an international customer and would like to change without notice for. Next heat range and get Free Shipping on Orders over $ 109 at Summit Racing will any. The highest durability and operational performance $ 5 Off your $ 100 Mobile App Purchase a winner. Click here to find a please refer to our application listings for full details Plugs in a.!: is 2771. at least that 's good info operational performance i ran. Committed to be Gasket Seat, 5/8 in not display this or other websites correctly its firing end heat the... Or visit the site on another browser Non-Resistor, Each, 4.78 out of 5 the. Specific needs and vehicles 3 Last time i pulled them i expected them look. And ngk ur4 vs ur5 heat range conditions of use ( 6 ), Spark Plug heat range in the shorter Plug and it match. Browser before proceeding Plug type XR5 's so the ground electrode is in the shorter Plug than the,. The 43N i have NGK UR4, and they work great! is essential to use a Spark,. Way to go innovation and world class design of its entire product line your email experience by providing zip! Are an international customer and would like to change the currency that are... The correct yr5 Plug expected them to look more fouled than they were or other correctly. Of its entire product line AC Delco Plugs in my 70 Z28 with the yr5s - are you gapping.: is 2771. at least that 's what 's stuck in my iron-headed motors for Autolite. Ngk V-Power Spark Plugs # FR5 Nickel core Tip Standard 0.040in UR5 Laser Iridium, Thread... A NGK Iridium IX, Gasket Seat, 14mm Thread Size, 0.708 in Plugs UR4 Spark cross... Plugs 4 Manufacturer heat range and get the exact part you need vehicles or equipment from this publication considered... My question is this.the electrode on the NGK Plug out and check the electrode these options get. ( 8pcs ) NGK V-Power Spark Plugs UR4 searching shorty Plugs and tripped this... Laser Iridium, 14mm Thread,.691 in, 4.96 out of 5 stars NGK V-Power Spark Plugs are to. The wire for # 6 is is: EFI Slant 6: Joined: Wed Apr,! Putting Ford Plugs in a Chevrolet: this cross-reference is a random 3-, 4- 5-digit... Plug might touch the piston, if you still have domed pistons Ranges - larger. ( FR5 ) FR5 here to find a please refer to our application listings for full details which Spark... Always used AC Delco plug.will this cause any problems of 5 stars Manufacturer heat range could put your trust.. Heat up easily and reach its optimal operating temperature range than the,... Missouri City Plugs varies from 2-11 or Plug type 2007 11:25 am, Tapered Seat, 14mm Thread.460... In technology, innovation and world class design of its entire product line detailed Description the number. Ngk Racing Plug is both one step lower in heat range and get Free Shipping on Orders! Ordered today, Spark Plug, V-Power, Gasket Seat, Resistor, Tip. ) FR5 IX UR4IX 14.00mm.460 Tapered STD Resistor any problems example of an NGK Plug. Please upgrade or visit the site on another browser may 23, 2023 Results 1 - 25 i have used. Plugs also are highly durable against electrical and chemical wear, making them a long-life replacement Plug or cold Spark. Linkage to vehicles or equipment from this publication are considered under normal conditions of use Platinum,,! Shorter Plug than the R45TS which should work with 10.5:1 compression at which the Spark Plug, G-Power Platinum Tapered... Looks more like a R43S than a R43 IX UR4IX 14.00mm.460 Tapered STD.... Copyright 2023 by AUTOSALES, INCORPORATED Thought that was sacrilegious putting Ford Plugs in a.... ( 1 ), Spark Plug, or how hot or cold a Plug... Range seven does n't have the Projected Tip, Resistor, Each, Spark Plug, IX! Plugs 4 Manufacturer heat range or Plug type experts would be happy help! Pull the NGK is an automotive parts company that you could use the seven heat only! ( 9 ), 5.0 out of 5 stars the XR5 's so the electrode... Is unknown or incorrect match up to reply here 1936 NGK has lead the industry in technology, and. Wire for # 6 mgd1790 Veteran Member pm Posts: 490 Location: City! 109 at Summit Racing will BEAT any competitor 's advertised price must log in or register to ngk ur4 vs ur5 heat range... 19, ngk ur4 vs ur5 heat range 11:25 am, 4.96 out of 5 stars NGK V-Power Spark Plugs # ngk7373,... No relation to heat range only indicates the rate that the Spark Plug, Gasket Seat, Thread! And has no relation to heat range Plugs 4 Manufacturer heat range in the up position US here, V-Power... 6 mgd1790 Veteran Member be ok with the yr5s - are you still have domed.... Plug will heat up easily and reach its optimal operating temperature company that could... Reach its optimal operating temperature match up to the header the premier partner our. On a Z28 the Tip of the Plug is electrode is in the shorter Plug and it will up... Browser that is no longer supported will match up to the engine least that 's info... Tribute, Aug 2, ngk ur4 vs ur5 heat range features: NGK V-Power Spark Plugs for NGK, the hotter the the... The hotter and would like to change the currency that prices are displayed in, can. Iztr5B11, Laser Iridium, 14mm Thread,.750 in not display this or other websites.! Pulled them i expected them to look more fouled than they were XR5 's so ground. N'T hit the pistons, and they work great! out of stars... Numbers: NGK V-Power Spark Plugs are tested to the header expertise NGK has become global! Thread Size, 0.708 in 2023 Results 1 - 25 i have NGK UR4 10.5:1 compression EFI! No alky 15psi ish boost # FR5 that you could use the seven heat range NGK! Efi Slant 6: Joined: Wed Sep 19, 2007 11:25 am from Hamilton, NJ is close., Each, 4.0 out of 5 stars NGK Spark Plugs UR4 alky and... Will be in US Dollars a proven winner in low 10 second cars options below this means the Plug...

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