between Autolite Racing AC Delco Champion and NGK. I have the Autolite Ir ordered but I suspect they are not the best I suppose these are all different heat ranges Heat Range Chart Location G11 Hex 5 Reach 34. Contact bosch to ngk standard spark plugs_ngk spark plug for your consent to catalogue data for general reference charts contain the!GM Genuine Parts glow plugs are designed to withstand the harsh elements of diesel engines. Our plugs offer high performance, long life and improve throttle performance. ACDelco spark plugs feature only high-quality parts to help ensure durability and consistent performance: Electrodes built on a foundation of iridium, platinum or copper. Spark ...Selecting the Right Heat Range. 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 ... Racing Cross Reference Chart. TECHNICAL INFORMATION REAL PERFORMANCE. REAL ALUE. 0617 FRAM Group IP LLC West Field Court Lae Forest IL 00 Printed in USA Gamme ThermiqueR45T or R43T? I am getting mixed answers from the internet. Looks like all spark plug manufacturers does not follow the same convention. Some are using a lower number for a hotter plug where as some others are using a higher number for a hotter plug.What are the right AC Delco Spark Plugs-'69 350/300. Jump to Latest Follow 35047 Views 9 Replies 8 Participants Last post by DjD, Feb 2, 2010. P. ... Plug heat range is tied to your driving style and the car's duty cycle; that said, 43's are WAY too cold for normal street use, 44's are better and less prone to fouling, and 45's are better if ...Available for use in Marine applications. Smoother ride, reliable performance - ACDelco Spark Plugs boost your vehicle's performance . long-lasting performance, time and time again. Patented, one-piece insulator design - withstands temperature pressure and vibration. The copper core electrode - helps transfer heat, which is important for today ...Learn how to choose, install, and maintain the best aviation spark plugs for your aircraft with this comprehensive application guide from Tempest Plus. This PDF document covers the features, benefits, and specifications of Tempest spark plugs, as well as troubleshooting tips and frequently asked questions.ACDelco GM Genuine Parts Iridium Spark Plugs. Summit Racing Part Number: ADO-41-162. UPC: 00808709886594. Spark Plug Thread Size: 14mm. Spark Plug Reach (in.): 0.689 in.Re: NGK vs. AC Delco spark plugs. The XR5 looks more like a R43S than a R43. On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. 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.Manufacturer Heat Range: 4 . Shorty Spark Plug: No . Resistor: Yes . Electrode Tip Material: Copper . Electrode Core Material: Copper . Center Electrode Type: Projected . Spark Plug Seat Style: Tapered . Wrench Diameter: 5/8 in. Ground Strap Quantity: One . Quantity: Sold individually. Autolite Copper Core Spark Plugs. Autolite copper core …FOR ANY MODIFIED APPLICATIONS, PLEASE CONTACT OUR TECHNICAL SUPPORT TEAM ON THE CONTACT US PAGE HERE FOR HELP FINDING THE BEST SUITED PART FOR YOUR APPLICATION AND/OR CUSTOM BUILD. CROSS REFERENCE GUIDE. E3 Spark Plug Cross Reference for AC Delco, Autolite, Bosch, Champion, …Quantity: Description. Additional Details. ACDelco 12578277 41-983 Double Platinum Spark Plug. ACDelco Professional Double Platinum Spark Plugs are premium aftermarket plugs, and are a high quality replacement ideal for many vehicles on the road today. With a copper core and double platinum pads on the center electrode, these plugs are designed ...NOS Set of 2 ACDelco Spark Plugs 41-602 Free Shipping. USD 6.95. Spark Plug-Conventional ACDelco GM Original Equipment 41-602 NOS Sealed Set Of 4. USD 18.95. 6 PACK Spark Plug-Conventional ACDelco 41-602. USD 20.85. Spark Plug-Natural ACDelco GM Original Equipment 41-602.ACDelco Spark Plug C43N. USD 5.99. Lot of 8 Vintage AC C43N 5612874 Commercial Spark Plugs Boxed NOS. USD 20.00. Lot Of 8 C43N AC Delco Commercial Spark Plugs 5612874. USD 49.99. CR43N AC GM Engine Spark Plug. USD 11.85. 6 pc NGK 5122 BR7ES Standard Spark Plugs for XST4055DP XST4055 WR5CC qi.The contrast with state institutions is glaring, even though many of them have a much better academic reputation. Like many government-run entities, public universities in India often get criticised by students and their parents for their p...In 1994 General Motors had a system named "AC-Delco" for marketing and streamlining the operations of spark plug sales. In 1995 they renovated the name, deducted the hyphen- "ACDelco", took new market strategies, and adopted a new logo. We know them for their reasonable pricing and satisfying quality. ... Heat Range (colder) 43 ...Learn how to choose, install, and maintain the best aviation spark plugs for your aircraft with this comprehensive application guide from Tempest Plus. This PDF document covers the features, benefits, and specifications of Tempest spark plugs, as well as troubleshooting tips and frequently asked questions.ACDelco GM Genuine Parts Iridium Spark Plugs. Summit Racing Part Number: ADO-41-162. UPC: 00808709886594. Spark Plug Thread Size: 14mm. Spark Plug Reach (in.): 0.689 in.NGK R5671A-8 4554 V Power Racing Turbo Nitrous Supercharged Spark Plugs Set of 8. USD 49.99. NGK Spark Plug Racing Box of 4 R5671A-8. USD 39.17. NGK Spark Plug R5671A-8 R5671A8-4 pcs Plugs. USD 22.50. NGK (4554) R5671A-8 Racing Spark Plug, Pack of 1. USD 9.17. NGK R5671A-8 V-POWER RACING PLUG 4554.ACDelco Copper Spark Plug 41-629 Shop All ACDelco. ACDelco9590. Part # 41-629. SKU # 9590. Check if this fits your vehicle. Price Not Available. Free In-Store Pick Up ...Replacement spark plugs for AC DELCO 41-932 on Ebay. 8 OEM GMC IRIDIUM SPARK PLUGS FOR GMC C2500 SUBURBAN 1996-1999 ACDELCO 41-993. USD 83.01. 8 pc NGK 7862 PZTR5A-15 Laser Platinum Spark Plugs for PTJ16R15 PT16TT ya. USD 66.88.Available for use in Marine applications. Smoother ride, reliable performance - ACDelco Spark Plugs boost your vehicle's performance . long-lasting performance, time and time again. Patented, one-piece insulator design - withstands temperature pressure and vibration. The copper core electrode - helps transfer heat, which is important for today ...GM Genuine Parts glow plugs are designed to withstand the harsh elements of diesel engines. Our plugs offer high performance, long life and improve throttle performance. ACDelco spark plugs feature only high-quality parts to help ensure durability and consistent performance: Electrodes built on a foundation of iridium, platinum or copper. Spark ...Web the acdelco heat range chart is a chart that provides the heat rating in addition to other characteristics of the acdelco spark plugs. A Conventional Copper Electrode Replacement For An Ac Delco #10 Rapid Fire Platinum Tip Spark Plug Is A Ac Delco R43T Spark Plug. Lower numbers indicate a hotter type, higher numbers indicate a colder type. …Instant throttle response and better fuel economy. Less fouling flame dissipation and misfire. Pack of 4. › See more product details. ACCEL 0416S-4 HP Copper Spark Plug - Shorty. 4.6 out of 5 stars. 21. 9 offers from $39.95.These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. Smoother ride, reliable performance - ACDelco Spark Plugs boost your vehicle's performance . long-lasting performance, time and time again. Patented, one-piece insulator design - withstands temperature pressure and vibration.Conventional Spark Plugs. Designed with a high-quality copper core, these spark plugs help deliver reliable performance. Black onyx coating helps prevent corrosion. Copper core provides great heat transfer and helps maximize plug durability. Ribbed suppressor seal extends resistance and helps prevent spark "flash over" and misfires.Heat Range: 4 Hex Size (mm): 16mm Hex Size (in): 5/8 Inch ... ACDelco has a tremendous history that encompasses almost 100 years. With new advances in parts technology, new inventions and innovative ideas, ACDelco holds the highest standards in the industry.Heating Oil Price: Get all information on the Price of Heating Oil including News, Charts and Realtime Quotes. The heating oil price is tied to the development of the price of crude oil and therefore also depends on the low supply and high ...The ACDelco heat range chart is a chart that provides the heat rating in addition to other characteristics of the ACDelco spark plugs. The heat rating indicates the thermal characteristic of the spark plug, or how hot or how cold the spark plug is.Save on ACDelco Copper Core Spark Plug Original Equipment Replacement R43TS at Advance Auto Parts. ... Manufacturer Heat Range: 3. Pre-Gap Size: 0.04 in. Reach: 0.431 ...GM Original Equipment™ Iridium Spark Plug (41-114) by ACDelco®. If you want to restore the original performance of your vehicle's ignition system, this product is what you need. Engineered to stringent …Feb 23, 2004. #13. Actually, Most, if not all of the new style AC-Delco Rapidfire plugs are platinum. AC-Delco phased out the old style copper core Rapidfire plugs that had the serated center electrode. I'm running the new platinum Rapidfire in my 98 Chevy truck with the 5.7L and they seem to work very good.Some ACDelco Gold parts may have formerly appeared as ACDelco Professional. Solid state suppressor, with two-piece glass and brass seal, can help reduce radio frequency interference, regulates spark energy for long electrode life, and helps protect against high combustion pressures ... Pure copper core provides great heat transfer and helps ...The spark plug heat range only indicates the rate that the spark plug dissipates its firing end heat to the engine. A hotter heat range spark plug has an insulator design with a longer heat flow path to the metal shell of the plug. As a result, more heat stays in the ceramic firing end and less is dissipated to the engine. A colder heat range ... FOR ANY MODIFIED APPLICATIONS, PLEASE CONTACT OUR TECHNICAL SUPPORT TEAM ON THE CONTACT US PAGE HERE FOR HELP FINDING THE BEST SUITED PART FOR YOUR APPLICATION AND/OR CUSTOM BUILD. CROSS REFERENCE GUIDE. E3 Spark Plug Cross Reference for AC Delco, Autolite, Bosch, Champion, Denso, Motorcraft, NGK, and Splitfire spark plugs. Frequently bought together. This item: ACDelco Gold 4 RAPIDFIRE Spark Plug (Pack of 1) $726. +. K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Yamaha Vehicles, KN-145. $1099. Total price: Add both to Cart. WARNING : California's Proposition 65.Last updated on 03/08/2022 This is a comparison of a cold heat range plug (left) versus a much hotter heat range plug (right). Notice how the distance between the ceramic and the spark plug shell on the hotter plug requires heat to travel a farther distance, which maintains more heat in the spark plug.6 new AC DELCO CR43TS SPARK PLUGS CHEVROLET FORD DODGE. USD 9.99. Set Of 6 Spark Plugs AcDelco For Chevrolet Dodge GMC Plymouth 6 CYL CR43TS. USD 22.00. Spark Plug CR43TS ACDelco Professional/Gold. USD 31.59. Spark Plug CR43TS ACDelco Professional/Gold. USD 12.55. ACDelco CR43TS Spark Plug.GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle. Smoother ride, reliable performance - ACDelco Spark Plugs boost your vehicle's performance . long-lasting performance, time and time again. Patented, one-piece insulator design - withstands temperature pressure and vibration.what is an acdelco heat range chart reference com ... range chart is a chart that provides the heat rating in addition to other characteristics of the acdelco spark plugs the heat rating indicates the thermal characteristic …[15] Heat Range - The middle number indicates the heat range of the spark plug, the higher the number the hotter the heat range. [YC] Firing End Design - The letters after the heat rating indicates a special spark plug construction feature called the firing end design. The letters refer to the center electrode material, projection dimension and ...These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. Black Onyx coating helps reduce corrosion. Copper core provides great heat transfer and helps maximize plug durability. Ribbed suppressor seal extends resistance and helps prevent spark 'flash over' and misfires.Features & Benefits. ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications.Genuine GM ACDelco Spark Plugs R45TS Set Of 8. USD 24.99. ACDelco R45XLS Copper Spark Plug - 8 Pack - 19302731 GM OEM. USD 29.83. Genuine GM ACDelco Spark Plugs CR45TS Set Of 8. USD 24.99. Genuine GM ACDelco Spark Plugs R45TSX Set Of 8. USD 24.99. Spark Plug-Conventional ACDelco R45T.Therefore, performance spark plugs are available in different heat ranges, conductor types, and more to provide optimum ignition and burning of your air fuel mixture. ... and utilize their heat range cross reference chart for Champion and NGK brands respectively. ... AC Delco 41-962 Double Platinum Spark Plug. View (0) $7.99 More Info.Look at the application chart. Multitudes of conventional plugs ..and a half dozen (pratically) of the plats. This is "one size fits all" marketing. ... Some companies are careless about heat ranges with platnium plugs, but then again, some do the same with normal plugs. ... if not all of the new style AC-Delco Rapidfire plugs are platinum. AC ...PDF Spark Plug Chart ACDelco Professional Iridium Spark Plug - O'Reilly Auto Parts Short Reach Plug. Up to $4 or 8 spark plugs per receipt. Set of 8 Spark Plugs For Mercruiser 305 350 454 5.0L 5.7L 7.4L Boat. ... 274 Autolite 14 Autolite 203 Autolite 23 Autolite 24 Autolite 25 Autolite 26 Autolite 3303 Reading AC Delco spark plug heat range. ...Heat Range: 6: Thread Diameter: 0.551" Resistance: 4-7.5 kOhm: Insulator Height: 2.067" Center Electrode Core Material: Copper: Ground Configuration: Single: Ground Electrode Core Material: Nickel Alloy: Ground Electrode Tip Design: Single Prong Electrodecarb load up and flood engine out, study guide for hospital care exam ac delco copper spark plug r44ts at autozone com tahoe z71 ac delco copper spark plug r45s at autozone com service manual heat range conversion chart ngk com laserjet service manual delco spark plug heat range chart media lab study guide for nys trooper exam acdelco spark plugsQuicksilver 898264001 AC Delco MR43T Spark Plug . USD 5.86 . ACDelco R44T Professional Conventional Spark Plug (Pack of 8) USD 29.82 . ACDelco Gold R44T Conventional Spark Plug . USD 6.77 ...ACDelco Iridium Spark Plugs are the latest evolution in high-performance plug electrode material and are designed to last 100,000 miles.* Iridium is one of the hardest materials used in spark plugs today, which allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration.1990-1991 ACDelco Spark Plug set. If the LT5 engine in your ZR1 is ready for a tune, trust ACDelco parts. Featured. ... A copper-core center electrode that helps provide improved heat transfer to the tip, ... Voltage at a spark plug can range from 40,000 to 100,000 volts. Spark Plugs have a ceramic insulation to carry the voltage from the ...(1) This comparison chart does not guarantee adaptability to vehicles. Please use it as a reference only. (2) Plug specifications (design, materials, etc.) varies according to manufacturer. (3) Choose your plug model by referring to the vehicle model compatibility table.For GM and other makes back to 1930, there's the AC Delco Professional Conventional Spark Plug. For import vehicles with an emphasis on German makes, ... Spark Plug Heat Range. A spark plug's heat range is the temperature range in which a plug works well thermally. No matter what type of spark plug you choose, an optimal heat rating for ...AC Delco R45TS Conventional Spark Plug made by AC Delco, for as low as $3.99. Order ships free when this item is included and exceeds $149. ... Copper core provides great heat transfer and helps maximize plug durability; ... Spark Plug Heat Range: 5: Core Material: Copper: Tip Material: Nickel Alloy: Wrench Size: 16mm: Sold in Quantity: Each:The ACDelco heat range chart is a chart that provides the heat rating in addition to other characteristics of the ACDelco spark plugs. The heat rating indicates the thermal characteristic of the spark plug, or how hot or how cold the spark plug is. The chart details the plug identification table. It consists of possible spark plug prefix valuesAc Delco Spark Plug Heat Range Guide Pdf If you ally compulsion such a referred Ac Delco Spark Plug Heat Range Guide Pdf books that will offer you worth, get the agreed best seller from us currently from several preferred authors. If you want to hilarious books, lots of novels, tale, jokes, and more fictions collections are after thatPDF Spark Plug Chart ACDelco Professional Iridium Spark Plug - O'Reilly Auto Parts Short Reach Plug. Up to $4 or 8 spark plugs per receipt. Set of 8 Spark Plugs For Mercruiser 305 350 454 5.0L 5.7L 7.4L Boat. ... 274 Autolite 14 Autolite 203 Autolite 23 Autolite 24 Autolite 25 Autolite 26 Autolite 3303 Reading AC Delco spark plug heat range. ...May 11, 2018 · Last updated on 03/08/2022 This is a comparison of a cold heat range plug (left) versus a much hotter heat range plug (right). Notice how the distance between the ceramic and the spark plug shell on the hotter plug requires heat to travel a farther distance, which maintains more heat in the spark plug. May 20, 2011 · Most spark plug manufacturers recommend that the tip temperature remain between 500° C and 850° C. Heat ranges are designated by each spark plug manufacturer with a number. In broad terms, spark plugs are often referred to as “hot plugs” or “cold plugs.” Last updated on 03/08/2022 This is a comparison of a cold heat range plug (left) versus a much hotter heat range plug (right). Notice how the distance between the ceramic and the spark plug shell on the hotter plug requires heat to travel a farther distance, which maintains more heat in the spark plug.ACDelco MR43T - Spark Plug. (0) $3.99. ACDelco R44TS - Spark Plug. (0) $3.69. Some parts are not legal for use in California or other states with similar laws / regulations. Get the Best Performance with ACDelco SPARK PLUG R44LTS6 parts at JEGS. Shop Now at the Guaranteed Lowest Price!Feb 25, 2008 · 6,401. Bremen, Ga. for the common std SBC AC delco plugs.. R45TS is known as stock heat range on most engines.. high number is hotter, lower number is colder.. R44TS would be 1 step colder. if plugs are too hot, it can help to cause detonation/pre ign. If too cold they will foul out, carb load up and flood engine out. Free Shipping - ACDelco GM Genuine Parts Iridium Spark Plugs with qualifying orders of $109. Shop Spark Plugs at Summit Racing. ... Manufacturer Heat Range: 16 . Shorty Spark Plug: No . Resistor: Yes . …NGK Spark Plugs BKR5E - V-Power Resistor Spark Plug 14mm x ... (1) $2.99. ACDelco R45TS - Spark Plug. (4) $3.99. Some parts are not legal for use in California or other states with similar laws / regulations. Get the Best Performance with ACDelco SPARK PLUG 41-602 parts at JEGS. Shop Now at the Guaranteed Lowest Price!AC Delco CR43TS Conventional Spark Plug made by AC Delco, for as low as $3.99. Order ships free when this item is included and exceeds $149. ... Copper core provides great heat transfer and helps maximize plug durability; ... Spark Plug Heat Range: 3: Core Material: Copper: Tip Material: Nickel Alloy: Wrench Size: 16mm: Sold in Quantity: Each:ACDelco R43S Professional Conventional Spark Plug (Pack of 1) USD 10.45 . Champion Copper Plus 431 Spark Plug (Carton of 1) - RC14YC for 1981 - 2002 Saturn SL1 and Chevrolet . USD 2.54 . Champion Copper Plus 14 Spark Plug (Carton of 4) - RJ12YC . USD 13.96 ...Ac delco spark plug gap chartReplacement spark plugs for AC DELCO 41-800 on Amazon. Autolite APP3924 Double Platinum Automotive Replacement Spark Plugs (4 Pack) USD 14.97. Denso (5305) IW16 Iridium Power Spark Plug, (Pack of 1) USD 9.82. DENSO IW16 Spark Plug. USD 11.85. Denso (5305) IW16 Iridium Power Spark Plug, (Pack of 1) USD 9.82.Autolite 85 - Alternative spark plugs. Autolite 85. - Alternative spark plugs. There are 145 replacement spark plugs for Autolite 85 . The cross references are for general reference only, please check for correct specifications and measurements for your application.Jan 18, 2020 · To finally answer this question, the 41-110 is a NGK plug and the 41-162 is a Denso plug. GM switched vendors, the plugs are basically the same. As a reminder, there is no ACDelco spark plug manufacturing facility. Sperry · #13 · Aug 9, 2021. billbled said: 2013 Silverado 4.8L . . . 41-110 vs 41-162 plugs. QUICK REFERENCE CHART For completed details, reference the ACDelco Policy and Procedures Manual (SD126). ... DATE OF SALE TO ORIGINAL PURCHASER GENERAL ACDelco OE & Professional Replacement Parts 24 months/Unlimited mile OE Hub Wheel Bearings - Front and Back Limited Lifetime Advantage Bearings 12 months/Unlimited mile ... (Extended Range ...NGK's performance and heat dissipation capacity cannot beat that of Champions. Conductivity. Champion Spark Plug is better and has higher conductivity than NGK. NGK spark plugs have better and higher conductivity. Size. Tread Diameter:0.551. Gap Size: 0.40 inch. Type. Copper plus spark plug.Correct heat range of spark plug is being used. Replace with the equivalent Autolite spark plug at the proper interval. Appearance - Grayish-tan to white color. ... Drill and Tap Chart - INCH; Drill and Tap Chart - METRIC; Drill and Tap Chart - BRITISH; Valve Adjustment; Ford 302 HO and 351W; Ford 260, 289 and 302; SBF Valve Layout;Jan 2, 2020 · They are made in Japan and are top quality. That was after I found out AC Delco parts were made offshore by the lowest bidder. GM sold the AC Delco parts division and the last AC Delco plant in the US closed in 1996. It is now ACDelco with no space between C and D. Champion made the first projected tip spark plugs. They were designed by Smokey ... Some were wanting to see pics of the 41-110 vs 41-162 plugs - hope these help. Looks like the center electrode on the 41-162 is a fair bit different. To finally answer this question, the 41-110 is a NGK plug and the 41-162 is a Denso plug. GM switched vendors, the plugs are basically the same.NGK.comBeing able to "read" a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine's overall operating condition. In general, a light tan/gray color tells you that the spark plug is operating at optimum temperature and that the engine is in ...According to AC's chart, prefix is the letters before the numbers and suffix is the letters after the numbers. That would make the plugs (if AC), M=marine R=resistor …USD 17.44. ACDelco R46SZ Spark Plugs GM Set of 16 Professional Conventional NOS OEM USA. USD 22.00. ACDelco R46SX / 5613881 Conventional Ignition Spark Plugs PACK OF 8 PCS NEW GA44. USD 20.00. AC Delco R46SZ Spark Plugs Pkg Of 8. USD 29.95. R46S Acdelco Spark Plug Made in USA Free Shipping Free Returns R46S.Quantity: Description. Additional Details. ACDelco 12621258 41-110 Iridium Spark Plug. ACDelco Professional Iridium Spark Plugs are a high quality replacement ideal for many vehicles on the road today. Professional Iridium Spark Plugs are our latest in spark plug technology and an exact replacement for your vehicle’s original components.USD 15.30. New OEM ACDelco Spark Plug 41-603. USD 12.82. New AC Delco 41-603 Spark Plug. USD 1.08. Box of 8 New AC Delco Spark Plugs 41-603 88901233. USD 14.40. Autolite 3926 Copper Core Spark Plug for AGSP52 7700 5613448 431 41-603 3183 bl. USD 13.04.Dec 24, 2020 · Heat Range Reference Chart. As we mention above, the heat range for NGK spark plugs varies from 2-11. Let’s take a look on the heat range chart where there is full information about the number. You will have the basic understanding whether it is a hot or cold spark plug of 5 majors spark plug brands. Heat range reference chart of some popular ... Hey Dave, from what we can tell, Accel’s assigned that particular plug a “6” on their heat range scale. According to Accel’s chart found here, the next hottest is a 7, which is also what they consider their “hottest” plug. We found these two with a “7” heat range and a 14mm thread pitch, but they both have a shorter 0.375″ reach than your …Here is the cross ref. for the AC Delco R45S (the NGK XR4 is listed): AC DELCO R45S - Alternative spark plugs Replacement spark plugs for AC DELCO R45S: Accel 0437S Accel 138 Accel 0437 Autolite 86 Autolite AP86 Autolite AP85 Beru 14R-11F Bosch WR9FP Bosch WR10FC Bosch WR10F Bosch WR9FC Bosch stk 7519 Champion RJ18YC Champion RJ12YC Champion ...Tech Tips Choosing the Right Spark Plug Heat Range Role of Spark Plugs While the primary function of the spark plugs is providing the spark to ignite the air/fuel combination and start the engine, an equally important function of the engine’s spark plugs is to remove heat away from the combustion chamber.Brand-new genuine ACDelco R43TS spark plug. This spark plug is two heat ranges colder than the original stock R44TS fac, Features & Benefits: A copper-core center electrode that helps provide improved heat tran, Catalog. Where to Buy. Shop. Company. Support. Contact. Chat Offline. FIND YOUR PART. View our online selection, 1.This application listing is to be used as a guide only. Due to different engine mod, The heat range must be carefully selected for proper spark plug thermal performance. If th, Find Accel Spark Plugs 6 Manufacturer Heat Range and get Free Shipping on Orders Over $, This item: ACDelco GM Original Equipment 41-162 Iridium Spark , Web The Acdelco Heat Range Chart Is A Chart That Pro, The diff between the 121 and 122 would probably be, 2016 camaro v8 41-114 - Heat Range 16. 2016 Camaro v6 4, Feb 27, 2012 · On our '69, with stock ignition, I , GM Original Equipment™ Double Platinum Spark Plug (41-902) , ACDelco R44LTS6 - Spark Plug. (0) $3.99. NGK Spark, ACDelco GM Genuine Parts Iridium Spark Plugs. Summit Ra, Platinum specifically is a poor conductor and holds heat; on, C6 Tech/Performance - NGK vs. AC/Delco - So I decided to up, The R45LTS6 produces more heat. At ACDelco, we always re, 546 &urvvuhihuhqfhvduhsurylghgdvd*8,'(21/< '.