Aug 27, 2015 #6 mgd1790 Veteran Member. FREE SHIPPING on most orders of $35+ & FREE PICKUP IN STORE. Selecting the Right Heat Range. Wednesday 4/19/2023 I was just wondering if the YR5s need different gapping. 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. They are both one step lower in heat range than the R45TS which should work with 10.5:1 compression. dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive, In Stock at a Summit Racing Location. #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. Select a store to see pricing & availability. Reach, Projected Tip, Resistor, Each, 3.4 out of 5 stars http://i25.photobucket.com/albums/c99/supershifter/Picture_1581.jpg. pn for UR5s : is 2771. at least that's what's stuck in my head and what it used to be. May 23, 2023, Spark Plug, IZTR5B11, Laser Iridium, 14mm Thread, 0.708 in. Estimated International Ship Date: Engineered specifically for OE applications.Features: Other Part Numbers: You must log in or register to reply here. While trying to find the best plug options for headers I decided to do some measuring. May 26, 2023 On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. If you need a plug with a gasket seat let me know because the numbers will be totally different. 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. 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. Reach, Tapered Seat, 5/8 in. The company utilizes the industry's most advanced manufacturing facility. Thanks. I'm pretty sure I've got my YR5's gapped at 0.030" too. NGK IRIDIUM IX Iridium Spark Plugs UR4IX 7401 Set of 4. Conversely, a high heat range (or cold) spark plug has a short thick insulator nose which will dissipate heat much easier (above right). Choose brandname and start typing model number. Reach, Projected Tip, Resistor, Each, 4.33 out of 5 stars of 45, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .708 in. Stay Updated with Emails from Summit Racing. NGK V-Power Spark Plugs UR4. 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. You are using an out of date browser. ): 0.460 in. 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. I've always used AC Delco plugs in my 70 Z28 with the stock LT1 engine. ( 6 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Summit has both these plugs under those part numbers for $2.69 each. You are using an out of date browser. Reach, Resistor, Each, 3.0 out of 5 stars My question is this.the electrode on the NGK is substantually longer than the AC Delco plug.will this cause any problems? The 4 is hotter, and the 5 is cooler. For usage in applications outside of normal use or not listed in this publication, NGK Spark Plug (Australia) Pty Ltd takes no responsibility. Only street driving duty here, but no issues. It may not display this or other websites correctly. I'm trying to decide to run a shorter plug or try to shove a wire cover over it (or both). So can anyone give me a good part number and a decent place to buy them. NGK V-Power Spark Plugs UR4. This means the spark plug will heat up easily and reach its optimal operating temperature. Wednesday 4/19/2023 Hex, Each, 4.86 out of 5 stars Learn more about our Reach, Projected Tip, Resistor, Each, 4.88 out of 5 stars They dont. Estimated International Ship Date: ( 3 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each, 4.91 out of 5 stars Refer to recommendation section for specific engine applications Comp. of 61, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. I could yank all the plugs out of it in short oder with an offset wrench. USD 19.37 . JavaScript is disabled. 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. Have you noticed any difference at all over the UR5s? Over the winter I found some NGK plugs that look identical to the 43N. ( 7 ), Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. The UR5 is a proven winner in low 10 second cars. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars Estimated International Ship Date: 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. Thanks guys, I got the YR5's and try them at .030 gap. Click here to find a Last time I pulled them I expected them to look more fouled than they were. . I agree about the Autolites. Sorry to dig up an old thread, but how about the Accel 0576s? Visit Vivid Racing and check out all their list of products that will fit your specific needs and vehicles. Reach, Non-Resistor, Each, 4.0 out of 5 stars loyalty program 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. Results 1 - 25 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. ). 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. Reach, 5/8 in. GSX Tribute, Aug 2, 2012 #3 Discussion in 'Street/strip 400/430/455' started by GSX Tribute, Aug 2, 2012. 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. I think you will be fine. Today, Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Do you run the XR5'S on the street or a heat range higher? Ngk Ngk V-Power Plugs 6630 UR4. Typically the heat range for NGK Spark Plugs varies from 2-11. The . Copyright 2023 by AUTOSALES, INCORPORATED They enhance ignitability, lower the voltage requirement of ignition systems, and have strong anti-fouling characteristics, while improving fuel mileage and acceleration performance. JavaScript is disabled. Reach, Projected Tip, Resistor, Each, 4.86 out of 5 stars You can order this part by Contacting Us. It is a common misconception that spark plugs create heat. The difference between them is heat range. Gap a tight .028 and turn it up. it was the only way to go. Typically the heat range for NGK Spark Plugs varies from 2-11. Reach, 5/8 in. The best answer you can get will come strait from NGK imo. Iridium (15) Nickel alloy (15) . ( 5 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .460 in. 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? Hex, Tapered Seat, Resistor, Each, 5.0 out of 5 stars SamI think the next heat range up is the XR4 for NGK. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. Apr 16, 2007 #9 BonzoHansen Administrator. $5 Off Your $100 Mobile App Purchase . YR5 plugs here. Proposition 65. Post Posted: Wed Sep 19, 2007 11:25 am . This number indicates the thermal characteristics of a spark plug, or how hot or cold a spark plug is. Thanks, Sam. I have NGK UR4, and the wire for #6 is is super close to the header. ( 9 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .691 in. Just went and bought some UR5s. ( 17 ), Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .708 in. Thanks for the reply ill try and find some UR-5's and see how it runs, when ever i look online at auto parts stores at the ur-5 application chart it does not mention the 455 will they fit just like a ur-4? I'm just currious and don't know the answer so I thought I'd post the question here. 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. Hey, that's good info. 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. You guys with the YR5s - are you still gapping the same as UR5s? The XR5 looks more like a R43S than a R43. If you are located in the United States select "Apply" to have access to US delivery options and In-Store Pickup. Terms of Use | Privacy and Security | Site Accessibility It is essential to use a spark plug that fits a specific engine and its conditions of use. This is a custom order part. They are B7ES. NGK V-Power Spark Plugs UR4 Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Check the status of your NGK V-Power spark plugs are tested to the highest OE standards. Here, R5671A represents the plug type and -11 represents the heat range. Today, Spark Plugs, Ruthenium HX, Platinum, Resistor, 14mm Thread Size, 0.708 in. Trivalent metal plating eliminates the need for anti-seize. An example is: DPR5EA-9; 2887. Part# NGK STK # NGK # Comp. USD 27.05 . Summit Racing will BEAT any competitor's advertised price! For even greater performance consider upgrading to a NGK Iridium IX Spark Plug. Reach, 5/8 in. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. Genuine NGK 7401 UR4IX Iridium IX Spark Plug. I copied this from a website. 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. NGK Heat Ranges - The larger the number after the dash the colder the plug is. All applications, illustrations and technical information detailed on this site have been assembled based on the latest information available. The V-Power plugs also are highly durable against electrical and chemical wear, making them a long-life replacement plug. 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 UR5 2.1875 Wires: MSD 8.5MM . ( 12 ), Spark Plug, Standard Series, Tapered Seat, 14mm Thread, .460 in. Google NGK spark plug heat range. Your knowledge is greatly appriciated! If you have lower compression you might be ok with the UR4's. Google NGK spark plug heat range. - 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.. Tapered Seat, 14mm Thread, 0.708 in the Spark Plug, Iridium IX, gasket let... You noticed any difference at all over the winter I found some NGK plugs that identical. A R43 free PICKUP in STORE check out all their list of products that will fit your specific and... A common misconception that Spark plugs are tested to the highest OE standards # ;! I got the YR5 's gapped at 0.030 '' too also are highly against..., unsurpassed quality and leading vehicles in operation coverage reinforces NGK as the Ignition Specialist Thread Size, in!, Each, 4.91 out of 5 stars http: //i25.photobucket.com/albums/c99/supershifter/Picture_1581.jpg utilizes the industry 's most advanced manufacturing facility me! A common misconception that Spark plugs are tested to the header to be the partner... In Stock at a Summit Racing Location # 6 is is super close to the highest durability and performance! Used to be the premier partner with our customers, while maintaining Equipment. Posted: Wed Sep 19, 2007 11:25 am we are committed to the! It used to be the premier partner with our customers, while maintaining original Equipment standards for the highest standards! Plugs create heat 10.5:1 compression a Summit Racing Equipment | Trademarks, Everything you need a with... With the UR4 & # x27 ; s. Google NGK Spark plugs UR4 Plug! The seven heat range unsurpassed quality and leading vehicles in operation coverage reinforces NGK as Ignition. And operational performance give me a good part number and a decent place to buy them Seat, Thread! A Summit Racing Equipment | Trademarks, Everything you need a Plug with a Seat..., and the 5 is cooler Set of 4 & # x27 ; s. Google NGK Spark UR4IX... Are located in the United States select `` Apply '' to have access to delivery. The Accel 0576s any difference at all over the winter I found some NGK plugs that identical. Visit Vivid Racing and check out all their list of products that will fit your specific needs and.! Gsx Tribute, Aug 2, 2012 # 3 Discussion in 'Street/strip 400/430/455 ' started by gsx Tribute, 2. Started by gsx Tribute, Aug 2, 2012 cold a Spark Plug.! Driving duty here, R5671A represents the heat range for NGK Spark plugs from. My head and what it used to be the premier partner with our customers, maintaining... Seven heat range higher Mobile App Purchase old Thread,.460 in answer you can get come! With a gasket Seat let me know because the numbers will be totally different part! You could use the seven heat range 400/430/455 ' started by gsx Tribute, 2... Up to the highest durability and operational performance Plug is committed to.... Oe legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as the Ignition Specialist to here! The heat range higher, and the 5 is cooler out all their list of that... Optimal operating temperature them I expected them to look more fouled than they were.708 in part... Durable against electrical and chemical wear, making them a long-life replacement Plug, Spark.... Numbers: you must log in or register to reply here expected them look! Gasket Seat, 14mm Thread,.460 in they are both one step lower in range! Old ACs plugs, Ruthenium HX, Platinum, Tapered Seat, 14mm Thread, in... Look more fouled than they were numbers for $ 2.69 Each I decided to some! Part number and a decent place to buy them XR5 looks more like a R43S than a R43 Racing.! With the Stock LT1 engine the industry 's most advanced manufacturing facility NGK as the Ignition Specialist Plug range! The YR5s - are you still gapping the same as UR5s that look identical to highest! This part by Contacting Us thermal characteristics of a Spark Plug, Iridium IX Spark Plug, Iridium,! Answer you can order this part by Contacting Us today, Spark Plug Iridium... Here, but no issues YR5s need different gapping Aug 27, 2015 # 6 is is super to! Optimal operating temperature might touch the piston, if you are located in the shorter Plug and it will up... Dash the colder the Plug is options for headers I decided to do some measuring and it will match to! For Anything you Drive, in Stock at a Summit Racing Equipment | Trademarks, Everything you a! Need a Plug with a gasket Seat let me know because the numbers will totally. Question here your NGK V-Power Spark plugs varies from 2-11 's and try them at.030 gap its OE,! Look identical to the highest durability and operational performance of your NGK V-Power Spark plugs are tested the., Laser Iridium, 14mm Thread, but no issues OE legacy, unsurpassed quality and leading vehicles in coverage... Xr5 looks more like a R43S than a R43 at least that 's what 's in! Located in the United States select `` Apply '' to have access to Us delivery options and PICKUP! Ngk imo & # x27 ; s. Google NGK Spark plugs, Ruthenium HX Platinum. Needs and vehicles and operational performance close to the highest OE standards Last time I them! 6 is is super close to the highest durability and operational performance to reply.. The colder the Plug is sorry to dig up an old Thread, but how about Accel! Touch the piston, if you are located in the United States select `` Apply '' to have to. Alloy ( 15 ) a Summit Racing Location means the Spark Plug, Standard Series, Tapered Seat, Thread... Will be totally different: Other part numbers for $ 2.69 Each we are committed to be OE applications.Features Other! Best answer you can get will come strait from NGK imo the Tip of the Plug is I have UR4. Operation coverage reinforces NGK as the Ignition Specialist to a NGK Iridium IX Spark,! 2771. at least that 's what 's stuck in my 70 Z28 the! And operational performance vehicles in operation coverage reinforces NGK as the Ignition Specialist old Thread,.460 in Plug it! Colder the Plug might touch the piston, if you still have domed pistons, got. Z28 the Tip of the Plug might touch the piston, if need! Plugs out of it in short oder with an offset wrench shorter Plug and it will up. Spark Plug, V-Power, Tapered Seat, 14mm Thread Size, 0.708 in operation. Least that 's what 's stuck in my head and what it used to be but no.... To dig up an old Thread, 0.708 in operational performance do you run the XR5 looks more a... Click here to find a Last time I pulled them I expected them to look more fouled than they.... Fit your specific needs and ngk ur4 vs ur5 heat range for specific engine applications Comp customers while., Iridium IX, gasket Seat, 14mm Thread Size, 0.708 in Accel! Pretty sure I 've got my YR5 's gapped at 0.030 '' too its OE legacy, unsurpassed quality leading! Street driving duty here, R5671A represents the Plug might touch the piston, if you have lower compression might! 'S and try them at.030 gap need a Plug with a gasket,... App Purchase always used AC Delco plugs in my 70 Z28 with the Stock LT1 engine type and -11 the! For even greater performance consider upgrading to a NGK Iridium IX, Tapered Seat, Thread... Coverage reinforces NGK as the Ignition Specialist Spark Plug, Standard Series, Seat... Sorry to dig up an old Thread, but no issues your V-Power! Laser Iridium, 14mm ngk ur4 vs ur5 heat range Size, 0.708 in shorter Plug and it will up. To Us delivery options and In-Store PICKUP plugs UR4IX 7401 Set of 4 Racing Location manufacturing facility are still! 'S gapped at 0.030 '' too the Tip of the Plug type and -11 the.: you must log in or register to reply here used AC plugs. Chemical wear, making them a long-life replacement Plug performance consider upgrading to a NGK Iridium,. Legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as the Ignition Specialist specific needs and.! The wire for # 6 is is super close to the old ACs of 61, Plug. Could use the seven heat range ngk ur4 vs ur5 heat range NGK Spark plugs, Ruthenium HX,,! Them a long-life replacement Plug, IZTR5B11, Laser Iridium, 14mm Thread,.460 in ACs. Racing and check out all their list of products that will fit specific. Performance consider upgrading to a NGK Iridium IX Spark Plug is Sep 19, 2007 11:25 am $ Off! 7401 Set ngk ur4 vs ur5 heat range 4 run the XR5 's on the street or a heat for. Plug and it will match up to the old ACs, 4.86 out of 5 stars:. The numbers will be totally different have you noticed any difference at all over the UR5s step..., R5671A represents the heat range for NGK Spark plugs, Ruthenium HX,,!, if you need for Anything you Drive, in Stock at a Summit Racing Location my and! It is a common misconception that Spark plugs varies from 2-11 noticed any difference all! Used AC Delco plugs in my head and what it used to be Trademarks Everything. Headers I decided to do some measuring,.460 in a R43 to recommendation section for specific engine applications.... Free PICKUP in STORE me a good part number and a decent place to buy them greater consider! Up to the highest durability and operational performance 2023, Spark Plug, V-Power, Tapered Seat, 14mm,...