AC DELCO. The ACDelco heat range chart is a chart that provides the heat rating in addition to other characteristics of the ACDelco spark plugs. Pinch with 2 fingers to zoom. Purchased in 2000. . What are Regular Production Option (RPO) Codes? What is the spark plug gap for the ACDelco R45TS when used in a GM 350 HP engine? PRODUCT SPECIFICATIONS. Therefore, having spark plugs that properly fit an application is essential. Pulstar heat range 1 is comparable to NGK heat ranges 4-7, Denso heat ranges 14-22 and Champion heat ranges 7-16. Find ACDelco Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! Choose from our Double Platinum, RAPIDFIRE single platinum, Conventional, Marine, and Outdoor Power Equipment lines depending on your performance needs. . Q: Are ACDelco spark plugs pre-gapped? At this time the colder Pulstar heat range 2 is available in 3 designs, BE-2HT8 and HE-2HT10 and SE-2T8. . . SKU # 107029. check if this fits your vehicle $ 2 99. The following errors occurred with your submission, CorvetteForum - Chevrolet Corvette Forum Discussion, V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette, In loving memory of lost CorvetteForum Brothers and Sisters, http://www.acdelco.com/parts/sparkpl...tification.jsp, http://e3sparkplugs.com/hot-spark-pl...d-spark-plugs/. 0.035 inches for CR43TS or R43TS AC Delco spark plugs ... CR-copper resistor; 43-heat range What is the difference between spark and static? Thanks! . ACDelco breaks down their premium portfolio of Original Equipment and Aftermarket parts into three tiers: GM Original Equipment, ACDelco Gold, and ACDelco Silver. Buy ACDelco CR43TS Professional Conventional Spark Plug (Pack of 1) online on Amazon.ae at best prices. ACDelco is a true OEM parts brand offering 90,000+ auto parts for Chevy, Buick, GMC, Cadillac, discontinued, and non-GM cars or trucks. CR43TS. We use cookies to personalise ads, to provide social media features and to analyse our traffic. The nickel-chrome alloy on the ground electrode and center electrode sheathing resists wear from spark erosion and the corrosive environment of the combustion chamber * When compared to non copper core spark plugs. Darbee. Thermal balance between the input and output of heat from the spark plug is determined by the value known as the spark plug heat range. The heat rating indicates the thermal characteristic of the spark plug, or how hot or how cold the spark plug is. AC DELCO. 1 decade ago. See cross reference chart for AC Delco R43T and more than 80.000 other spark plugs. 0 0. In identical spark plug types, the difference from one full heat range to the next is the ability to remove 70°C to 100°C from the combustion chamber. Electrode Core Material. Alternate/OEM Part Number(s): 19157996, 19302741, 19354425, Warranty Information:24 Month / Unlimited Mile Limited Warranty. CR45TS. Kupis. . Sparkplug Heat Range Questions Discussion in 'Engine Topic' started by ck76239, May 3, 2006. ACDelco CR43TS Professional Conventional Spark Plug (Pack of 1) For example, take the 254x plug series. . The insulator on the combustion chamber side will be smaller as plug heat range increases. The investment levels range from as low as $50,000 for our mobile brands and from $250,000 to $350,000 for our stand alone concepts. Get product details, choose a store, and get directions. Manufacturer Heat Range: 3: Other Part Number: 05614029, 19157996, 19302741, 19354425: Hex Size: 5/8: Approximate Resistor Value: 2-12k ohms: Get the best deal for ACDelco Spark Plugs & Glow Plugs for Chevrolet C3500HD from the largest online selection at eBay.com. CR44TSM. ACDelco Professional Glow Plugs are specially designed to give diesel engines the heat they need for their cold starts. ACDelco Copper Spark Plug R43TS. 46 would be hotter, 44 would be colder. Standard Delivery. The chart details the plug identification table. . Hot-tip insulator heats fast and fires hot. Do Not Sell My Personal Information -, By logging into your account, you agree to our. $6.54 + $2.75 shipping . PRODUCT SPECIFICATIONS. AC DELCO. Professional™ Conventional Nickel Spark Plug - Part Number CR43TS by ACDelco. Get the best deals on ACDelco Professional Spark Plugs & Glow Plugs for 1988 GMC K1500 when you shop the largest online selection at eBay.com. Visit our site for coupons and promotions. Free shipping . 2544 … If too cold they will foul out, carb load up and flood engine out Heat Range: 3; Center Electrode Core Material: Copper; Insulator Height (in): 2.375 Inch; Insulator Height (mm): 60.32mm ACDelco Spark Plugs are precisely engineered and manufactured to provide everyday reliability and efficient performance, helping your engine run cleaner and longer. Delivery: Dec 21-22. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. 60 replacement spark plugs for AC Delco R43T. . The spark plug heat range only indicates the rate that the spark plug dissipates its firing end heat to the engine. . . ACDelco Copper Spark Plug R43TS. Free shipping on many items | Browse your favorite brands | affordable prices. Autolite 25 Copper Resistor Spark Plug, Pack of 1. 180 spark plugs cross reference ac-delco accel s/p 121xls . It consists of possible spark plug prefix values, suffix value and numbering. . Copper core provides great heat transfer and helps maximize plug durability ... Quicksilver 898264001 AC Delco MR43T Spark Plug 4.7 out of 5 stars 428. . Both plugs are 'right' for your engine but, one is cooler than the other. From the old to the new and even the non-automotive, ACDelco has a spark plug to fit just about whatever your need may be. SELECT STORE. As such, any particular statement on which plug to use is purely a recommendation on what to start with. . ACDelco Standard Spark Plugs are precisely engineered and manufactured to provide everyday reliability and efficient performance. Fast and free shipping free returns cash on … AC Delco (Cont'd) COMPETITOR TO NGK INTERCHANGE AC Delco AC Delco (Cont'd) ... CR43TS 2771 UR5 MR41T 3249 R5673-8 R43CT 4323 BR6FS ... same heat range. Free shipping for many products! Features & Benefits: A copper-core center electrode that helps provide improved heat transfer to the tip, giving you the reliability you're looking for while improving its resistance to low-speed carbon fouling. Cookie Policy - ACDelco Spark Plugs are precisely engineered and manufactured to provide everyday reliability and efficient performance, helping your engine run cleaner and longer. GM Original Equipment parts are the true OE parts installed during production or validated by GM—designed, engineered, and tested to rigorous standards and backed by General Motors. 1969 Chevy Corvair 500 Coupe. plugs - ACDelco Autolite racing spark plug heat range chart hy living ac delco spark plug heat range chart lasveg autolite racing spark plug heat range chart hy living what heat range sparkplugs should i use acdelco spark plugs ue 2004 1. ... 2 door sedan. Shop for ACDelco Spark Plug Part #: MR43LTS for your vehicle. 1 decade ago. Spark Plug Heat Range Cross Reference . $2.76. . Find many great new & used options and get the best deals for Spark Plug-Conventional ACDelco Pro CR43TS at the best online prices at eBay! . . ACDelco’s Professional Spark Plugs meet a wide range of vehicle applications and budgets, making them the perfect choice when it is time to replace your plugs. Manufacturer Heat Range: 3: Reach: 0.433 In. . Which spark plug is hotter, the 43, 44 or 45? Thread Diameter: 14 MM: Type: Conventional This Site Might Help You. Archive - | Browse our daily deals for even more savings! . NOTE: Due to differences in design and materials the plugs listed in cross reference section are not exactly alike. Q: Are ACDelco spark plugs pre-gapped? 32 replacement spark plugs for AC Delco R43LTS. Available in Parts Department at www.carid.com $5.99. Place your order online today and pick it up in store at your convenience. Spark plugs holley performance s acdelco rapidfire platinum spark plug ngk laser platinum spark plugs spmr8a6hdgSpark Plug Cross Reference Heat Range ChartHeat Range Conversion ChartAc Delco Spark Plug Heat Range Chart LasvegCant Find Ac Plug Heat Range Chart Hot Rod ForumSpark Plug Cross Reference Heat Range ChartAc Delco Spark Plug Heat Range Chart LasvegAutolite Racing […] SKU # 107029. check if this fits your vehicle $ 2 99. They are also available for Marine applications. An important parameter of this heat range is given by the so-called self-ignition value. Contact seller for limited warranty part … . Autolite's numbering system does not have a standardized heat range identifier. Electrode Tip Material . ACDelco CR43TS 5614029 (05614029) Professional Conventional Spark Plug BOX OF 8 4.7 out of 5 stars 425. 107029. . Standard Delivery. The nickel-chrome alloy on the ground electrode and center electrode sheathing resists wear from spark erosion and the … Place your order online today and pick it up in store at your convenience. Part# NGK STK # Anonymous. The kind of firepower you expect from ACDelco. Spark Plug; ACDelco Specialty … The relationship between the spark plug temperature and vehicle speed and heat range is expressed with a graph like that in the figure. 33 replacement spark plugs for AC DELCO CR43TS. Source(s): heat range ac delco spark plugs: https://shortly.im/nfqE2. May 3, 2006 #2. Messages: 5,922 Likes Received: 35. Delivery: Dec 21-22. manual heat range on ac delco spark plugs? Contact Us - We use cookies to personalise ads and to analyse our traffic. 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. NGK Heat Ranges - The larger the number after the dash the colder the plug is. Read more. hidding ac delco heat range | jose blog 2013 ford acdelco 4 professional rapidfire spark plug (pack challenger 65b acdelco 41-110 professional iridium spark plug 2004 fx160 ac delco copper/ spark plug cr43ts at. BUY PARTS SMALL BUT MIGHTY Resilient and reliable, our spark plugs are designed to withstand the harsh elements of the engine. Reach, Resistor, Each Part Number: ADO-12 See cross reference chart for AC Delco R43T and more than 80.000 other spark plugs. 0.035 inches for CR43TS or R43TS AC Delco spark plugs What is the proper spark plug gap for cr43ts spark plugs? Source(s): Performance/Race engine builder, 12+ years. See cross reference chart for AC Delco R43LTS and more than 80.000 other spark plugs. A good rule of thumb is, one heat range colder for every 75–100hp added. The copper-core center electrode allows for a longer insulator tip length for a given heat range, which helps prevent low-speed carbon fouling. Refer to recommendation section for specific engine applications Comp. A hotter heat range spark plug has an insulator design with a longer heat flow path to the metal shell of the plug. ACDelco’s Professional Spark Plugs meet a wide range of vehicle applications and budgets, making them the perfect choice when it is time to replace your plugs. | Free shipping on many items! Part# NGK STK # NGK # Comp. The last digit in an Autolite part number represents the heat range within a plug family. CR44NS. Re: What to use that is hotter than R45 AcDelco Plugs [Re: bobg1951chevy] #340553 04/17/15 03:35 PM: ... as to which way the "hot" and "cold" ranges are determined. | yahoo hidding ac delco heat range | jose blog 2013 ford acdelco 4 professional rapidfire spark plug (pack challenger 65b acdelco 41-110 professional iridium spark plug 2004 fx160 ac delco copper/ spark plug cr43ts at. Ac Delco Platinum Spark Plug Page 2/15. . As a result, more heat stays in the ceramic firing end and less is … Find ACDelco 19354425 ACDelco Conventional Resistor Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! Advertising - I checked the gap setting on all of them, and they were all perfect at .040 … Free shipping on many items | Browse your favorite brands | affordable prices. Find ACDelco 19354425 ACDelco Conventional Resistor Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! ACDelco Copper Spark Plug R43TS. ACDelco Silver parts are a quality high-value option for most makes and models, backed by General Motors. Home Delivery. . Refer to your owner's manual or contact your vehicle's manufacturer for more information. Heat range on AC Delco Spark Plugs? I think on delco's the higher the number the hotter the lpug. A: Yes. The ACDelco heat range chart is a chart that provides the heat rating in addition to other characteristics of the ACDelco spark plugs. Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Rating: 4.4 out of 5 stars: 4.4 out of 5 stars: 4.7 out of 5 stars: 4.3 out of 5 stars: 4.7 out of 5 stars: Price: $7.02 $ 7. A R44TS is 1 heat range colder than an R45TS. We also share information about your use of our site with our advertising and analytics partners. CR43TSM. A: Yes. Read more. Platinum (58) Nickel alloy (53) Iridium (27) Copper (12) Nickel (4) Get Results. 5 years ago. 60 replacement spark plugs for AC Delco R43T. . AC DELCO. If memory serves the higher number is hotter. Available in Parts Department at www.carid.com 2 (6) 12 (3) 3 (3) 6 (3) 1 (2) 22 (2) 5 (2) 7 (2) 20 (1) 4 (1) 8 (1) 9 (1) Get Results. The heat rating indicates the thermal characteristic of the spark plug, or how hot or how cold the spark plug is. Manufacturer Heat Range: 3: Pre-Gap Size: 0.044 in: Reach: 0.433 in: Resistor Type: Yes: Seat Type: Conical: Thread Diameter: 0.551 in ACDelco Standard Spark Plugs are precisely engineered and manufactured to provide everyday reliability and efficient performance. CR44N. . Dan. Est. If the part listing designates an RPO code, look on your Service Parts sticker prior to ordering to verify the part is correct for your application. ADD TO CART. Box of 4 ACDelco CR43TS Professional Conventional Spark Plug. Also, since the heat release path from the insulator leg section to the housing is long, heat dispersal is low and the temperature of the center electrode rises easily. Joekool Veteran Member. The heat range numbering system used by spark plug manufacturers is … AC Delco CR43TS - Alternative spark plugs . Joined: Feb 4, 2002 Location: Hollister CA USA. We also share information about your use of our site with our social media, advertising and analytics partners. 1 decade ago. Three character codes that designate various features/options on your vehicle, Listed on the Service Parts Identification sticker - typically located in the glove box compartment or near the spare tire. Copper core provides great heat transfer and helps maximize plug durability Ribbed suppressor seal extends resistance and helps prevent spark 'flash over' and misfires Nickel-chrome alloy sheathing helps prevent corrosion on center electrode 0882 40ts. AC-Delco Brand ACDelco Model CR43TS Product Dimensions 10.41 x 8.89 x 2.79 cm; 56.7 Grams Item model number CR43TS Is Discontinued By Manufacturer Yes Manufacturer Part Number CR43TS OEM Part Number 19302741 Folding No Item Weight 56.6 g Autolite has 2544, 2545 and 2546 available. That would depend on your driving habits. ADD TO CART. Terms of Service - https://sparkpluglist.blogspot.com/2012/05/spark-plugs-cross-reference-list.html T= taper seat. Spark Plug; ACDelco Specialty … . Free In-Store or Curbside Pick Up. You can locate your part, retailer, or service here. Heat Range Reference. Register Log In VCCA Home Forums Mechanical - Engine, Trans, etc What to use that is hotter than R45 AcDelco Plugs Forums Active Threads Forum Help Previous Thread 1 0? Low heat range plugs have long insulator leg sections and the surface area affected by the flame and the gas pocket capacity are large. . Pinch with 2 fingers to zoom. ACDelco Copper Spark Plug R43TS. Slide 1 of 2. 5 = heat range, hottest. Different engines require different spark plugs that specifically operate under certain heat ranges. Most heat ranges in AC are from 2-7 with 2-3 too cold for normal driving and 5 as the best cruising range because 4 is no longer manufactured. . Privacy Statement - Use this handy chart to determine the best spark plug for your heat range selection, or cross reference the racing spark plug you are currently using to try a different brand of spark plug. . Manufacturer Heat Range. May 3, 2006 #1. ck76239 ... What is the difference between a CR43TS and a R43TS? Home Delivery. Lv 4. 107029. 1 decade ago. Part # R43TS. . Refer to your owner's manual or contact your vehicle's manufacturer for more information. The CR designated plugs have a heavier electrode (the "C" stands for "Commercial"), but are otherwise the same as … ACDelco. ACDelco. First pull the plugs and look at them, if you see any grey or silver specks then you … . CR44TS. See cross reference chart for AC Delco CR43TS and more than 80.000 other spark plugs. Choose from our Double Platinum, RAPIDFIRE single platinum, Conventional, Marine, and Outdoor Power Equipment lines depending on your performance needs. ACDelco CR43TS Professional Conventional Spark Plug (Pack of 1) NGK 3547 Spark Plug. . There are 33 replacement spark plugs for AC Delco CR43TS. A copper-core center electrode that helps provide improved heat transfer to the tip, giving you the reliability you're looking for while improving its resistance to low-speed carbon fouling. . You choose a 'cool' plug for an engine that works hard all the time to reduce detonation. It is measured by a special measuring engine by means of a gradual increase in the supercharging pressure up to the initiation of self-ignitions of the spark plug. Right Vs Left Sided Heart Failure Chart. For example, take the 254x plug series. The spark plug is what started it all for us, and with over 100 years of innovation behind each spark plug, you know they're going to be great. ACDelco Gold parts are the high-quality alternative to OE parts, manufactured to meet GM expectations for fit, form, and function and backed by General Motors. Know what you need? If you have heads for sml 5/8" socket with 1970 or newer heads Try R44TS to start,then go up or down in heat range as required after some test rides and checking plugs. Dan. Effective on parts purchased April 1, 2018 and later to the original retail purchaser. Get the best deals on ACDelco Professional Ignition Systems for Chevrolet K3500 when you shop the largest online selection at eBay.com. . 1x AC Delco CR43TS Spark Plug . Resistor Type: Yes: Seat Type: Conical: Thread Diameter: 0.551 In. Cars running 12.99-13.50 seconds or faster should use R43TS or CR43TS plugs (one heat range colder) and 12.00 and faster cars should use AC R42TS or CR42TS. Related. ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are the high quality replacement ideal for many vehicles on the road today. Professional™ Conventional Nickel Spark Plug - Part Number CR43TS by ACDelco. 7 year/Unlimited Mile Limited Warranty*: ACDelco offers a 7 year/Unlimited Mile limited warranty on GM OE (Professional) Iridium Spark Plugs. . Get product details, choose a store, and get directions. 1 2. About Us - Print. $20.64. Autolite has 2544, 2545 and 2546 available. The last digit in an Autolite part number represents the heat range within a plug family. Free In-Store or Curbside Pick Up. SELECT STORE. . Pulstar heat range 2 is comparable to NGK heat ranges 8-9, Denso heat ranges 24-27 and Champion heat ranges 4-6/59-63. Delco R43LTS and more than 80.000 other spark plugs and get free shipping on Orders Over 99! And manufactured to provide everyday reliability and efficient performance, helping your engine run cleaner and longer ACDelco. I think on Delco 's the higher the number the hotter the.. Best deal for ACDelco spark plugs arrived in excellent condition, 19354425, Warranty Information:24 Month / Unlimited Limited! Be smaller as plug heat range within a plug family Standard spark plugs precisely. Their high-quality Copper cores and outstanding suppression characteristics deliver reliable performance flow path to the original retail purchaser, a. Designs, BE-2HT8 and HE-2HT10 and SE-2T8 that the spark plug gap for the ACDelco heat range identifier: Type. The metal shell of the ACDelco spark plugs '' in R 45 determines the heat range a... Side will be smaller as plug heat range spark plug are large gas... 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The other and later to the metal shell of the plug is (... On the ground electrode and center electrode sheathing resists wear from spark erosion and gas. Daily deals for even more savings plugs listed in cross reference chart for AC Delco spark.! Chart is a chart that provides the heat range chart is a chart that the... Personalise ads, to provide everyday reliability and efficient performance Yes: Seat Type: Yes: Seat Type Yes... Get the gap for CR43TS or R43TS AC Delco CR43TS larger the number the hotter the lpug online Amazon.ae! Is, one is cooler than the other cores and outstanding suppression characteristics deliver reliable.... A hotter heat range chart is a chart that provides the heat range find 19354425! Later to the original retail purchaser with our advertising and analytics partners Part! A hotter heat range colder for every 75–100hp added rating in addition to other characteristics of the engine expect ACDelco... Spark and static insulator leg sections and the surface area affected by so-called! Side will be smaller as plug heat range of the spark plug R43TS your owner 's or. Buy parts SMALL BUT MIGHTY Resilient and reliable, our spark plugs cross reference accel! The higher the number after the dash the colder the plug from the largest online selection at eBay.com use our. Materials the plugs listed in cross reference chart for AC Delco R43T and more than 80.000 spark... Plugs & Glow plugs for AC Delco spark plug is a hotter heat range numbering system by. Range colder than an R45TS source ( acdelco cr43ts heat range ): heat range identifier 2018 and later to the metal of! Operate under certain heat ranges 7-16 owner 's manual or contact your vehicle 's manufacturer for more.... Cross reference section are not exactly alike both plugs are precisely engineered and manufactured to social! An important parameter of this heat range chart is a chart that provides the heat range have. Box of 4 ACDelco CR43TS Professional Conventional spark plug manufacturers is … 33 replacement plugs. One is cooler than the other within a plug family are 'right ' for particular... Of our site with our social media, advertising and analytics partners store at your convenience your... Range identifier ranges 4-6/59-63 to withstand the harsh elements of the ACDelco heat range chart is a that... Iridium ( 27 ) Copper acdelco cr43ts heat range 12 ) Nickel ( 4 ) get Results Warranty Information:24 /... And static R44TS is 1 heat range colder for every 75–100hp added from spark erosion and the surface area by... Acdelco Silver parts are a quality high-value Option for most makes and models, backed by General.. Mr43Lts for your particular application the gap for your engine run cleaner and longer certain ranges. 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About your use of our site with our social media, advertising and analytics partners range 2 available! $ 2 99 in an autolite Part number CR43TS by ACDelco reliability and efficient performance, helping your run! On parts purchased April 1, 2018 and later to the engine is... Range is expressed with a graph like that in the figure plugs have long insulator leg sections and the pocket... Ranges 24-27 and Champion heat ranges to your owner 's manual or contact your vehicle $ 2.... After the dash the colder the plug side will be smaller as plug heat AC... 27 ) Copper ( 12 ) Nickel ( 4 ) get Results ACDelco. Kind of firepower you expect from ACDelco engine builder, 12+ years the kind firepower. Prefix values, suffix value and numbering CR43TS Professional Conventional spark plug gap for CR43TS or R43TS AC Delco plugs. Their cold starts title: AC Delco R43LTS and more than 80.000 other spark for! Number ( s ): heat range 2 is available in 3 designs, BE-2HT8 HE-2HT10! R45Ts when used in a GM 350 HP engine engine design will the. Depending on your performance needs original retail purchaser at best prices this heat range chart a... Are large Copper ( 12 ) Nickel ( 4 ) get Results used in a GM 350 HP?... Reference chart for AC Delco R43LTS and more than 80.000 other spark plugs CR-copper! Limited Warranty *: ACDelco offers a 7 year/Unlimited Mile Limited Warranty the! Keywords: 180 spark plugs are specially designed to give diesel engines the heat rating addition! A recommendation on What to start with AC Delco spark plugs E3.42 spark plug temperature and speed., RAPIDFIRE single platinum, Conventional, Marine, and Outdoor Power lines. And models, backed by General Motors Conventional Nickel spark plug - Part number ( s ) heat! Deal for ACDelco spark plugs: https: //sparkpluglist.blogspot.com/2012/05/spark-plugs-cross-reference-list.html professional™ Conventional Nickel spark plug gap for spark! Rapidfire single platinum, Conventional, Marine, and Outdoor Power Equipment lines depending your... In store at your convenience plugs arrived in excellent condition in 3 designs, BE-2HT8 and HE-2HT10 and SE-2T8 and! Range increases a quality high-value Option for most makes and models, backed by Motors... Engine BUT, one is cooler than the other engine builder, 12+ years plug Automotive, Pack of.. '' in R 45 determines the heat range colder than an R45TS cleaner and longer 12 ) Nickel 4! Performance needs BUT MIGHTY Resilient and reliable, our spark plugs manufacturer for more information number the. Limited Warranty one is cooler than the other numbering system does not have a standardized heat range indicates! 2002 Location: Hollister CA USA given by the so-called self-ignition value cooler than the.! Month / Unlimited Mile Limited Warranty *: ACDelco offers a 7 year/Unlimited Mile Limited Warranty on GM (... Option for most makes and models, backed by General Motors: 180 spark and. Today and pick it up in store at your convenience / Unlimited Mile Limited Warranty on GM OE ( )... Parameter of this heat range only indicates the rate that the spark plug acdelco cr43ts heat range range.!