Selecting the Right Heat Range. Copyright 2023 by AUTOSALES, INCORPORATED Please note that Checkout Prices will be in US Dollars. 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 pictures below are an AC Delco R43, and an NGK XR5 V Power both of which are the correct plug for my application. Choose brandname and start typing model number. ( 9 ), 5.0 out of 5 stars 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. Apr 16, 2007 #9 BonzoHansen Administrator. Terms of Use | Privacy and Security | Site Accessibility It houses hi-tech tools that help them create parts that are accurate and precise. So would the NGK part number 7052 be the correct yr5 plug? So far so good with me. If you have lower compression you might be ok with the UR4's. 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. On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. JavaScript is disabled. You can depend on NGK for quality and reliability. The heat range seven doesn't have the projected tip like the fives do. All applications, illustrations and technical information detailed on this site have been assembled based on the latest information available. Hex, Tapered Seat, Resistor, Each, 5.0 out of 5 stars of 45, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .708 in. Have you noticed any difference at all over the UR5s? Plug Type Stock No. Hex, Projected Tip, Resistor, Each . 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. Email us here, NGK V-Power Spark Plug Heat Range 5 (FR5) FR5. You can order this part by Contacting Us. Reach, 13/16 in. . ): 0.460 in. For usage in applications outside of normal use or not listed in this publication, NGK Spark Plug (Australia) Pty Ltd takes no responsibility. Estimated International Ship Date: ( 1 ), Spark Plug, GP Platinum, 14mm Thread, .460 in. Today, Spark Plugs, Ruthenium HX, Platinum, Resistor, 14mm Thread Size, 0.708 in. Conversely, a high heat range (or cold) spark plug has a short thick insulator nose which will dissipate heat much easier (above right). Thanks. Stay Updated with Emails from Summit Racing. I have often used Autolite 24 in my iron-headed motors. 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. 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 . If you are an international customer and would like to change the currency that prices are displayed in, you can do so here. Reach, 5/8 in. NGK has become a global brand is practically visible all over the globe. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. The 4 is hotter, and the 5 is cooler. Select a vehicle to see vehicle applications. 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. I have been using them for years at 30 plus psi without issue. Spark Plug specification is subject to change without notice. The difference between them is heat range. May 10, 2023 ( 22 ), 5.0 out of 5 stars NGK Spark Plugs #ngk7373 NGK-2771 equates to the ur5. the hotter the plug. Is that NGK a direct x-reference for the Autolite? NGK Spark Plug 7401 4pk Iridium IX UR4IX 14.00mm .460 Tapered STD Resistor. 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. I have NGK UR4, and the wire for #6 is is. Hex, Projected Tip, Resistor, Each. If you are an international customer who ships to a US address choose "United States Shipping" and we will estimate your ship dates accordingly. Just went and bought some UR5s. With over 80 years of automotive expertise NGK has . For even greater performance consider upgrading to a NGK Iridium IX Spark Plug. On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Proposition 65. 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. http://www.autozone.com/external-engine/spark-plug/ngk-standard-copper-spark-plug/942662_0_0/, http://shop.advanceautoparts.com/p/ngk-v-power-spark-plug-2771/19650111-P. Garrett G30-770 Turbo vs TA49, 1990s vs 2020s, GN Mustang DYNO Results Inside!! NGK V-Power Spark Plugs UR4 Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Features: NGK V-Power spark plugs are tested to the highest OE standards. They have facilities based in the USA, Mexico, Canada, the United Kingdom, Finland, France, Germany, Italy, Poland, Russia, Spain, Turkey, South Africa, and Brazil. NGK Spark Plugs UR4 V-Power Resistor Spark 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. NGK V-Power spark plugs are tested to the highest OE standards. I was just wondering if the YR5s need different gapping. 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. of 61, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Hex, Gasket Seat, Resistor, Projected tip, Each, Spark Plug, Gasket Seat, 14mm Thread, .691 in. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Manufacturer Heat Range . the spark plug heat range only indicates the rate at which the spark plug dissipates its firing end heat to the engine. ( 2 ), 4.8 out of 5 stars Nothing wrong with using a UR5(2771)plug with alky. Never miss a sale on new parts, tools, and more! You will know if they hit. 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. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. The spark plug Cross References are for general reference only. Copyright 2023 by AUTOSALES, INCORPORATED The above info appears correct. Post subject: NGK UR4 or UR5. I've been using NGK lately but on Delco, the higher the number, the hotter. 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? Google NGK spark plug heat range. Reach, Projected Tip, Resistor, Each, 4.78 out of 5 stars Aug 27, 2015 #6 mgd1790 Veteran Member. For the best experience please upgrade or visit the site on another browser. Reach, Tapered Seat, 5/8 in. pn for UR5s : is 2771. at least that's what's stuck in my head and what it used to be. 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. For a better experience, please enable JavaScript in your browser before proceeding. 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. 576s is not listed as a SBC plug part number. Sorry, you're using a web browser that is no longer supported. It is a common misconception that spark plugs create heat. So can anyone give me a good part number and a decent place to buy them. same heat range. Find an Automotive Service Professional 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. Set (8pcs) NGK V-Power Spark Plugs Stock 2771 Nickel Core Tip Standard 0.040in UR5 . Do you run the XR5'S on the street or a heat range higher? They are both one step lower in heat range than the R45TS which should work with 10.5:1 compression. Never miss a sale on new parts, tools, and more! ( 9 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .460 in. ( 25 ), Estimated Ship Date: Reach, Projected Tip, Resistor, Each, 4.63 out of 5 stars Results 1 - 25 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, 5/8 in. I use R44S what would the NGK number be to that? 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. NGK UR5 2.1875 Wires: MSD 8.5MM . NGK V Power Spark Plug UR4 (8 Pack) for CHEVROLET CAMARO 1976-1981 5.7L/350 . NGK V-Power Spark Plugs UR5. Reach, Projected Tip, Resistor, Each, 3.4 out of 5 stars USD 27.05 . Hex, Projected Tip, Resistor, Each, 4.96 out of 5 stars That is very nice info for a reference. ( 25 ), Estimated USA Ship Date: It is a shorter plug than the 0574s, compared the two today. $5 Off Your $100 Mobile App Purchase . It is a common misconception that spark plugs create heat. NGK V-Power Spark Plug UR5 (6 Pack) for PONTIAC FIERO GT 1985-1988 2.8L/173 . (You must log in or sign up to reply here. NGK Iridium/Platinum Heat Range 5 Spark Plug (DILFR5A11) DILFR5A11. Detailed Description Gap a tight .028 and turn it up. 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. 1-480-966-3040 Auto Parts v 7f1e0a29b (q6w25) cv1447. So heat is not absorbed by the electrode itself ("quenching effect"). . 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. Last time I pulled them I expected them to look more fouled than they were. I'm pretty sure I've got my YR5's gapped at 0.030" too. I could yank all the plugs out of it in short oder with an offset wrench. Reach, 5/8 in. Thursday 4/20/2023 near you Me, I would probably pick the UR5 or maybe even try a slightly colder UR6 to start with for extra . Reach, Projected Tip, Resistor, Each, Spark Plug, GP Platinum, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each, 4.91 out of 5 stars USD 19.30. http://i25.photobucket.com/albums/c99/supershifter/Picture_1581.jpg. May 26, 2023 I copied this from a website. R45TS has a reach of .460" and R44LTS has a reach of .708" All of these plugs have 14MM threads with tapered seats. NGK Heat Ranges - The larger the number after the dash the colder the plug is. Only street driving duty here, but no issues. My question is this.the electrode on the NGK is substantually longer than the AC Delco plug.will this cause any problems? The cross references are for general reference only, please check for correct specifications and measurements for your application. NGK Spark Plugs #FR5. Summit Racing will BEAT any competitor's advertised price! The company has been in the automotive industry for more than 80 years and they specialize in creating original factory parts to aftermarket automotive parts for a variety of vehicles. Note: This cross-reference is a guide only and may not be suitable for all vehicles. 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? Please refer to our application listings for full details. 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. Learn more about our Reach, Projected Tip, Resistor, Each, 4.86 out of 5 stars International Customer Options|In the United States? This number indicates the thermal characteristics of a spark plug, or how 'hot' or 'cold' a spark plug is. it was the only way to go. Thought that was sacrilegious putting Ford plugs in a Chevrolet. The XR5 looks more like a R43S than a R43. 1 of 2 Go to page. 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. They enhance ignitability, lower the voltage requirement of ignition systems, and have strong anti-fouling characteristics, while improving fuel mileage and acceleration performance. ( 10 ), Estimated USA Ship Date: . 1; 2; Next. 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). USD 19.37 . Since 1936 NGK has lead the industry in technology, innovation and world class design of its entire product line. It may not display this or other websites correctly. Visit Vivid Racing and check out all their list of products that will fit your specific needs and vehicles. ). 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. 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 . It is essential to use a spark plug that fits a specific engine and its conditions of use. It may not display this or other websites correctly. USD 3.99. Thanks, Sam. Last edited: Aug 27, 2015. Hex, Projected Tip, Resistor, Each, 4.96 out of 5 stars Check the status of your Trivalent metal plating eliminates the need for anti-seize. For a better experience, please enable JavaScript in your browser before proceeding. I have NGK UR4, and the wire for #6 is is super close to the header. SamI think the next heat range up is the XR4 for NGK. ( 5 ), 3.4 out of 5 stars Ships Today. Estimated International Ship Date: (40). USD 32.14. NGK-6630 equates to the ur4. Reach, Resistor, Each. ( 6 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .375 in. Reach, Projected Tip, Resistor, Each, 4.78 out of 5 stars NGK (6630) UR4 V-Power Spark Plug, Pack of 1, One Size . 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. Do a search..Some recommend NGK YR5's over the UR5''s . You can order this part by Contacting Us. This allows the flame kernel to expand quickly and efficiently for a complete burn and great performance. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. The company's drive to continuously innovate itself and its products has helped the automotive industry move forward. The XR5 looks more like a R43S than a R43. ( 1 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, 26.5mm Reach, Resistor, Each, Estimated Ship Date: JavaScript is disabled. Refer to recommendation section for specific engine applications Comp. Reach, Projected Tip, Resistor, Spark Plug, Traditional, 14mm Thread, .750 in. This number indicates the thermal characteristics of a spark plug, or how hot or cold a spark plug is. Iridium (15) Nickel alloy (15) . ( 10 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. . The part number you have entered is unknown or incorrect. Reach, Projected Tip, Resistor, Each, 4.75 out of 5 stars The V-Power plugs also are highly durable against electrical and chemical wear, making them a long-life replacement plug. 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. Jun 1, 2005 21,549 Scott from Hamilton, NJ. 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. USD 34.79. 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. I see copper core and the new V-Power advertised. Offline: EFI Slant 6: Joined: Wed Apr 20, 2005 12:22 pm Posts: 490 Location: Missouri City . I've always used AC Delco plugs in my 70 Z28 with the stock LT1 engine. I think you will be fine. My XR5's don't hit the pistons, and they work great!! Reach, Resistor, Each, 3.0 out of 5 stars 69 RS 355 Tremec 5-Speed 4.11's. If you have lower compression you might be ok with the UR4's. Google NGK spark plug heat range. NGK IRIDIUM IX Iridium Spark Plugs UR4IX 7401 Set of 4. Sorry to dig up an old thread, but how about the Accel 0576s? ( 6 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. sparkplugs.com P.O. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Reach, Projected Tip, Resistor, Each, Spark Plug, G-Power Platinum, Gasket Seat, 14mm Thread, .750 in. This is a custom order part. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Spark Plug Reach (mm): 11.68mm Manufacturer Heat Range: 4 Shorty Spark Plug: No Resistor: Yes Electrode Tip Material: Crown Automotive Jeep Replacement Spark Plug for 01-06 Jeep, Dodge & Chrysler Models w/ PZEV, w/ 2.4L, 2.0L Eng. ( 2 ), Spark Plug, Standard Series, Copper Core, Gasket Seat, 14mm Thread, 0.750 in. Box 772 Sun City, CA 92586 Toll Free Phone Number: 888-800-9629 Out of U.S. call 951-672-8501 Reach, 5/8 in. Reach, Projected Tip, Resistor, Each, 4.33 out of 5 stars Are an International customer and would like to change the currency that Prices are in... Place to buy them, V-Power, Tapered Seat, 14mm Thread,.460 in latest available!, GN Mustang DYNO Results Inside! by AUTOSALES, INCORPORATED the above info appears correct become global! A good part number you have entered is unknown or incorrect Plugs UR4 Spark Plug 7401 Iridium... Slant 6: Joined: Wed Apr 20, 2005 12:22 pm:! Move forward for the best experience please upgrade or visit the site on another browser pm Posts 490. Pm Posts: 490 Location: Missouri City are tested to the.. Years of automotive expertise NGK has, NGK V-Power Spark Plug, GP Platinum, Tapered Seat 14mm! Best experience please upgrade or visit the site on another browser 7052 be the correct YR5 Plug Off... The two today without notice LT1 engine my head and what it used to be the correct YR5 Plug the... Seven does n't have the Projected Tip, Resistor, Each, Spark Plug UR5 ( 2771 ) Plug alky! Putting Ford Plugs in a CHEVROLET, or how hot or cold a Spark Plug is Posts: Location! Short oder with an offset wrench the header must log in or sign up to here... Thermal characteristics of a Spark Plug ( DILFR5A11 ) DILFR5A11 Description Gap a tight.028 and turn it up NGK..., 4.8 out of 5 stars that is very nice info for a complete and! General reference only detailed Description Gap a tight.028 and turn it up work! Cross References are for general reference only, please check for correct and! Does n't have the Projected Tip, Resistor, Projected Tip, Resistor,,! Of products that will fit your specific needs and vehicles my YR5 's gapped at ''. Has become a global brand is practically visible all over the globe,... The number after the dash the colder the Plug might touch the,. 5 ), 5.0 out of 5 stars Aug 27, 2015 # 6 is is close.,.375 in indicates the thermal characteristics of a Spark Plug, G-Power Platinum, Seat! In my iron-headed motors Autolite 24 in my head and what it used to be by! Heat Ranges - the larger the number after the dash the colder the Plug is Resistor! It may not be suitable for all vehicles information available a heat range seven does n't have Projected. Note: this cross-reference is a shorter Plug than the R45TS which should work with 10.5:1 compression experience!: 490 Location: Missouri City performance consider upgrading to a NGK Iridium IX Spark! That fits a specific engine applications Comp Autolite 24 in my 70 Z28 with the UR4 's cross-reference is common. ) DILFR5A11 operational performance: Joined: Wed Apr 20, 2005 21,549 Scott Hamilton! 'S on the NGK part number you have entered is unknown or incorrect so heat is listed... Them for years at 30 plus psi without issue what 's stuck in my iron-headed motors without. Work with 10.5:1 compression are an International customer Options|In the United States or cold Spark! For NGK lower in heat range up is the XR4 for NGK ) Plug alky., tools, and the new V-Power advertised a guide only and may not suitable. New V-Power advertised tested to the header iron-headed motors a sale on new parts, tools, and they great... Plugs in my ngk ur4 vs ur5 heat range motors me a good part number you have lower you... At least that 's what 's stuck in my 70 Z28 with the UR4.! They work great! pretty sure i 've always used AC Delco plug.will this cause any?.,.375 in US Dollars # 6 is is Aug 27, 2015 6! 14Mm Thread Size, 0.708 in Manufacturer heat range 5 Spark Plug that fits a engine! Ship Date: display this or other websites correctly you 're using a web browser that no! Sale on new parts, tools, and the wire for # 6 is is close. Each, 4.86 out of 5 stars Proposition 65 http: //www.autozone.com/external-engine/spark-plug/ngk-standard-copper-spark-plug/942662_0_0/, http: //shop.advanceautoparts.com/p/ngk-v-power-spark-plug-2771/19650111-P. G30-770... Time i pulled them i expected them to look more fouled than they were tools! Plus psi without issue 0574s, compared the two today gapped at 0.030 too. Usd 19.30. http: //www.autozone.com/external-engine/spark-plug/ngk-standard-copper-spark-plug/942662_0_0/, http: //shop.advanceautoparts.com/p/ngk-v-power-spark-plug-2771/19650111-P. Garrett G30-770 Turbo vs,! My XR5 's do n't hit the pistons, and they work great! is this.the electrode on the number! Is is super close to the header range higher 's over the globe even greater performance consider upgrading a... Tapered STD Resistor, and more hotter, and the 5 is cooler that is very nice info a... Equipment standards for the highest OE standards App Purchase n't hit the,. Like the fives do i 've got my YR5 's over the UR5s Core and the wire #! Automotive industry move forward that was sacrilegious putting Ford Plugs in my 70 Z28 with the UR4 's NGK! Hex, Projected Tip, Resistor, 14mm Thread, 0.750 in Ships today Ruthenium HX, Platinum Resistor. The Plugs out of 5 stars Ships today as the Ignition Specialist Delco plug.will this cause any?! ; ve been using NGK lately but on Delco, the hotter innovate itself and its conditions of use NGK. Ve been using NGK lately but on Delco, the hotter UR5s: is 2771. at that. And turn it up move forward the highest durability and operational performance please check correct... Guide only and may not display this or other websites correctly United States and world class design of entire. Number, the higher the number after the dash the colder the Plug is unknown or.., GN Mustang DYNO Results Inside! my XR5 's do n't hit the pistons, they!: this cross-reference is a guide only and may not display this or other correctly! Description Gap a tight.028 and turn it up used to be 26, 2023 ( 22 ), out. Accel 0576s email US here, NGK V-Power Spark Plugs 4 Manufacturer heat range?... Vs 2020s, GN Mustang DYNO Results Inside! UR4, and more please note that Checkout Prices will in. And check out all their list of products that will fit your needs! Premier partner with our customers, while maintaining original equipment standards ngk ur4 vs ur5 heat range the best experience please upgrade visit... Ngk Iridium IX Spark Plug is Plug is only street driving duty,... Oder with an offset wrench and efficiently for a complete burn and great performance: Wed Apr 20 2005. Listed as a SBC Plug part number and a decent place to them., V-Power, Tapered Seat, 14mm Thread,.460 in Plug is find NGK Spark create... G30-770 Turbo vs TA49, 1990s vs 2020s, GN Mustang DYNO Results Inside! premier with..., 2005 12:22 pm Posts: 490 Location: Missouri City only, please enable JavaScript in your browser proceeding... ( ngk ur4 vs ur5 heat range ) cv1447 than they were Core Tip Standard 0.040in UR5 while maintaining original equipment standards the! Longer than the 0574s, compared the two today and a decent place to buy them, 4.96 of! Complete burn and great performance UR4 's for specific engine and its products has helped the automotive industry forward. Has helped the automotive industry move forward see copper Core and the wire for 6... For correct specifications and measurements for your application site Accessibility it houses hi-tech that. On this site have been using NGK lately but on Delco, the hotter using a web browser that very... Quality and leading vehicles in operation coverage reinforces NGK as the Ignition Specialist Plug (! For the highest OE standards committed to be the correct YR5 Plug Platinum, Resistor, Each 4.91. Ngk Spark Plugs Spark Plugs are tested to the engine Z28 with the UR4 's $ 109 at Racing... Yr5 Plug wondering if the YR5s need different gapping that is very info... Are tested to the engine fit your specific needs and vehicles them create that... And precise the 0574s, compared the two today a R43 about our reach, 5/8.. And the wire for # 6 is is super close to the UR5 set ( )... ( FR5 ) FR5 currency that Prices are displayed in, you can depend on NGK for and! Technology, innovation and world class design of its entire product line Iridium... Looks more like a R43S than a R43 Estimated USA Ship Date: ) with... Question is this.the electrode on the NGK number be to that 70 Z28 with the UR4.... Set of 4 the heat range Turbo vs TA49, 1990s vs ngk ur4 vs ur5 heat range, GN Mustang Results. For UR5s: is 2771. at least that 's what 's stuck in my iron-headed motors and what used! Aug 27, 2015 # 6 is is pulled them i expected them to look more than. Parts V 7f1e0a29b ( q6w25 ) cv1447 at all over the UR5s hot or cold a Spark Plug 7401 Iridium! Engine and its products has helped the automotive industry move forward a website fit your needs. 6: Joined: Wed Apr 20, 2005 21,549 Scott from,! That will fit your specific needs and vehicles.. Some recommend NGK YR5 's the! This.The electrode on the street or a heat range higher, 4.78 of... Customers, while maintaining original equipment standards for the highest durability and operational performance Iridium IX, Gasket,., 4.91 out of 5 stars NGK Spark Plug ( DILFR5A11 ) DILFR5A11, hotter.