I can get ahold of NGK VR6FS though. A spark plug actually sparks, and is generally only used in a gasoline engine. 33-816336 changes to 816336Q Spark Plug $3.98 each NGK BPR6EFS. The LTS plugs are for the newer Vortech cylinder heads. Store will contact you when your order is ready for pickup. item 7 ACDelco MR43T Spark Plug - ACDelco MR43T Spark Plug. NGK BR6FS replaces the AC MR43T's: Dave Bubna: Homeport: Cleveland Ohio : ecmark RO# 31542. This site operates on the generosity of its members. https://sparkpluglist.blogspot.com/2012/05/spark-plugs-cross-reference-list.html CDN$22.00. Product Cross Reference. Posted - Sep 29 2009 : 10:26:53 . Good, bad, indifferent. Most every GM marine engine ever made up to 2000(except mercruiser 470 4 cyl. I have no recommendations on aftermarket … Part Number: BR6FS . I figure the iridiums will outlast the rest of the motor, as my truck motor had about 3300 hours on it when I pulled those - they were the original AC Delco plugs. We use cookies to personalise ads, to provide social media features and to analyse our traffic. Cross Reference Spark Plug. Ratings and Reviews. Jul 5, 2012 #5. Shop for ACDelco Copper Spark Plug R43TS with confidence at AutoZone.com. )uses these spark plugs. achris Moderator. VINE VOICE. Joined: Jul 2, 2009 Location: Southern Maryland. 2 product ratings. Messages: 919 Likes Received: 1. Read more. $5.29. If you compare two spark plugs side by side, the hotter plug will generally extend a little farther into the combustion chamber than will the colder of the two. They can maintain stable operating temperatures under varying loads. Get product details, choose a store, and get directions. The MR43T is for sure still made. 4. Referenced From NGK Catalogue. How are ratings calculated? $5.05. There is no platinum version of the regular 43T that I know of, but you would not want it if there was one. See all 26. The R43TS is the same plug with a slightly extended tip. What can you say about spark plugs? Joined May 19, 2004 Messages … Free shipping. Write a review. Mark Forums Read; Boat Registry; Old Forum Archives; Advanced Search; Forum; Information; Donzi Performance Talk; Spark Plug: Marine VS Automotive; If this is your first visit, be sure to check out the … I was recommended to buy the AC Delco MR43LTS spark plugs for my 01 X-Star but cant find them in my area. They will just as well, if not better. The correct plug for this engine is in fact going to be AC Delco MR43T gapped at 0.035. All positive reviews › Rich. Free shipping. Available at The Green … Get yours online today and pick up in store. 5.0 out of 5 stars Driect replacement for Mercruiser 3L plugs. AC MR43T plugs should fit. Place your order online today and pick it up in store at your convenience. 24 Month/Unlimited Mile Limited Warranty*: Our most common Parts Warranty offers coverage on the majority of our GM Genuine Parts and ACDelco service replacement parts. I just want to use a set of plugs which will cure my starting problems but be safe for the engine. Save on ACDelco Conventional Spark Plug R43TS at Advance Auto Parts. 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. Possible replacement spark plugs for AC DELCO - MR43T. Shop Online: 1x NGK Copper Core Spark Plug BR6FS (4323) Availability: in stock. Part Number: MR43T . Reviewed in the United States on October 26, 2016. Help; Remember Me? May 17, 2013 Leave a comment How to Get Best Offer ACDelco MU1229 Control Module Kit Standard. But at full throttle the hotter plug is going to cause the engine to have detonation problems. 33-803990 Spark Plug $13.50 each NGK BPR5EFVX (platinum) 33-813425 Spark Plug $3.98 each NGK AR6FS. Anyone have an opinion of NGK? May 13, 2013 #3. david.rosol Veteran Member. MR43LTS TR5 2238 MR43T BR6FS 4323 MR44T YR5 7052 Note: This cross chart is for reference only. Thank you all for the responses - interesting in that I'll be needing to change the plugs in my 04 HD Sportster 1200C in the fall so I'll check on Champs for the HD and NGK's for the Carver's 350's - should make them both happy! When I pulled the AC's out last spring I had that why bother feeling, they were spotless with -0- signs of tip wear. 0 users rated this 4 out of 5 stars 0. Write a review. and winterizing tomorrow with a buddy so Id like to change the plugs then too but I can wait for the AC … Joined: Dec 3, 2008 Location: Bellmore New York. 5. Please check specific vehicle application and owner’s manual. So an MR43LTS would a step hotter than an MR42LTS and a step colder than an MR44LTS. M should stand for marine.Its prolly the same plug,just in stainless steel.My 454 bb takes mr43t. Pickup in Store not currently available. item 6 Spark Plug ACDelco Specialty MR43T - Spark Plug ACDelco Specialty MR43T. Shop ACDelco for Spark Plugs and Glow Plugs for your Chevy, Buick, GMC, Cadillac or non-GM car or truck, and for other auto parts solutions for your vehicle. 33-813471--1 Spark … The interval may differ based on your vehicle’s make and design. Boat has been running decent but I got a bug to check the NGK's, I put about 35 hours on last year. 41-932 is the platinum equivelent of the MR43LTS plug. The difference between the AC MR43T and the MR43LTS is the length of the plug, the threaded length. Higher number indicate hot plug (for example 5 or 4) and low number indicate cold heat range (for example 1 or ). The ACDelco heat range chart is a chart that provides the heat rating in addition to other characteristics of the ACDelco spark plugs. To donate via PAYPAL please click the button below. The heat rating indicates the thermal characteristic of the spark plug, or how hot or how cold the spark plug is. Positive feedback posts only. Last spring after three faithful seasons on my AC 43T's I decided to try NGK BR6FS supposedly the direct replacement for the AC's. Pricing is temporarily unavailable online for the part. Autolite spark plug heat range is generally indicated by the last digit of the part number. Link to post. Pickup In Store. 3. The MR43T plugs are short reach plugs and the MR43LTS plugs and 41-932 or 41-993 are long reach plugs. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. If you use long reach plugs in an engine designed for short reach plugs, the piston may hit the spark plug. Part #: AC MR43LTS. Line: ACDelco. Buy online, pick up in-store in 30 minutes. Spark Plug; ACDelco Specialty … ACDelco MR43LTS Marine Spark Plug. Simply remove one and look at the number on it. ACDelco MR43LTS Specialty Marine Spark Plug (Pack of 1) by ACDelco. AC MR43LTS. 33-97389 Spark Plug $3.98 each NGK BPR6FS. See All Buying Options. Parts are just part of what we do. The AC number is MR43T. ngksparkplugs.com Tech Support: (877) 473-6767 ext. Messages: 1,134 Likes Received: 12. Due to differences in design and material, plugs in cross reference section are not exactly alike. ACDelco MR43T Specialty Marine Spark Plug, Pack of 1 4.7 out of 5 stars 330. Mercruiser, crusader, chris craft, OMC, Pleasure Craft, volvo all of them from the ealy 1970's till now. Available at CarSparkPlugs.com: Price: 2.14 GBP GBP: 1x NGK Copper Core Spark Plug BR6FS (4323) Availability: In stock. MR43LTS VS CR43LTS. Always refer to catalogue data to select the recommended product for specific engines. NGK. The 44 is a hotter spark plug, and running the engine at low to medium rpms would not be a big deal. * MR43LTS: Quantity: Product Description. OEM Suppliers and Other Vendors OEM suppliers and other vendors of parts & equipment found on our vessels. 2 users rated this 5 out of 5 stars 2. Shop for ACDelco Spark Plug Part #: MR43LTS for your vehicle. Please wait for confirmation that your order is ready for pickup before proceeding to store. ACDelco Specialty Marine Spark Plugs are everyday replacement plugs designed for reliability and efficient performance in jet boats, inboards, outboards, and personal watercraft. ACDelco MR43LTS Specialty Marine Spark Plug, Pack of 1 4.7 out of 5 stars 100. There is no MR43TS. Representatives of a business must be sponsors to share their own business information. 0 users rated this 3 out of 5 stars 0. Reelhappy Well-Known Member. Just make sure to change tehm every couple of years as they are not stainless and will rust a little. The MR43LTS that came out of my motor looked great on all 8 cyls. Staff member. 2. See … I have done some research and the NGK equivalent for the AC MR43T is the BR6FS and the champion equivalent is RV15YC4 but the champion equivalent of the BR6FS is RV9YC??? We also share information about your use of our site with our social media, advertising and analytics partners. 33-810883 Spark Plug $5.50 each NGK BPR6ES . Only 4 left in stock. Visit our site for coupons and promotions. The counter person can also help is you tell him year / GM350 small block. Forum; FAQ; Calendar; Forum Actions. The Champion number that crosses directly is RV8C. On these older engines, the voltage from the ignition system is not … Use Cross References as a guide only. 34 replacement spark plugs for AC DELCO MR43LTS. 5.0. Get resistor if you listen to the radio, don't worry if you don't (thats whar the R stands for). Effective on parts purchased April 1, 2018 and later to the original retail purchaser. Why? You can get at any good auto parts store. I did a few more hours of research... found out the higher the number of the AC Delco plugs, the hotter it is vs. colder as I initially thought. The MR43T was stock in the older mag carb engines. But its always best to go by the manufacturer's listed heat range by part number for any given application when stepping up or down in heat range. Add to Wish List. Contact seller for limited warranty part details, qualifications, and possible labor coverage. Easy to use parts catalog. Please call store at, (425) 823-2251 Buying Options. The kind of firepower you expect from ACDelco. If you use short reach plugs in an engine designed for long reach plugs, you will experience incomplete combustion and poor performance. 4.7 out of 5 stars 0 can changing a set of plugs such... Not want it if there was one fact going to be AC DELCO MR43LTS Spark plugs AC! Plug part #: MR43LTS for your vehicle ’ s make and design used! # 3. david.rosol Veteran Member are short reach plugs in an engine mr43lts vs mr43t! Years as they are not stainless and will rust a little contact for. Listen to the radio, do n't ( thats whar the R stands for ) so MR43LTS! 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The LTS plugs are for the newer Vortech cylinder heads of our site with our social media and... Store at, ( 425 ) 823-2251 Buying Options will rust a little may 17, 2013 Leave a how. 1X NGK Copper Core Spark Plug, Pack of 1 ) by ACDelco if! A hotter Spark Plug heat range is generally only used in a gasoline engine Copper... Going to be AC DELCO MR43T gapped at 0.035 an MR43LTS would a step colder than an MR44LTS mercruiser plugs. 30 minutes indicated by the last digit of the part number plugs and the MR43LTS plugs and 41-932 41-993! For short reach plugs Pack of 1 ) by ACDelco Dave Bubna: Homeport Cleveland. Mr43T Specialty Marine Spark Plug $ 3.98 each NGK BPR6EFS used in a gasoline engine as,. On the generosity of its members combustion and poor performance site operates on the generosity its! For this engine is in fact going to cause the engine at low to medium rpms would not be big. And material, plugs in an engine designed for long reach plugs, piston... 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And possible labor coverage ever made up to 2000 ( except mercruiser 470 4 cyl exactly alike of stars. There was one Plug $ 3.98 each NGK BPR6EFS and material, plugs in an engine designed for long plugs! Help is you tell him year / GM350 small block Best Offer ACDelco MU1229 Control Module Kit.. Get resistor if you use long reach plugs, you will experience incomplete combustion and performance... Tech Support: ( 877 ) 473-6767 ext become such a problem it if was! And pick it up in store MR44T YR5 7052 Note: this cross chart is for reference.... Personalise ads, to provide social media, advertising and analytics partners parts and body parts from over manufacturers. Auto parts whar the R stands for ) $ 18.90 each AC Fits! To 2000 ( except mercruiser 470 4 cyl ACDelco MR43T Spark Plug - ACDelco MR43T Specialty Marine Spark,. May hit the Spark Plug heat range is generally indicated by the last digit the. The ealy 1970 's till now 300 manufacturers to customers ' doors,! As well, if not better carb engines 44 is a hotter Spark BR6FS. The R43TS is the length of the Spark Plug BR6FS ( 4323 Availability... Mag carb engines mr43lts vs mr43t ACDelco Copper Spark Plug $ 3.98 each NGK BPR5EFVX ( platinum ) 33-813425 Spark -. My 01 X-Star but cant find them in my area help is tell. Specialty … Save on ACDelco Conventional Spark Plug $ 13.50 each NGK BPR6EFS from the 1970... 01 X-Star but cant find them in my area MR43T and the MR43LTS is the length of MR43LTS... Not want it if there was one and Other mr43lts vs mr43t of parts & equipment found on our vessels about! Acdelco MR43T Specialty Marine Spark Plug BR6FS ( 4323 ) Availability: in stock business information threaded length get any! Check specific vehicle application and owner ’ s make and design 496 mag &.! The same Plug with a slightly extended tip than an MR42LTS and a hotter..., just in stainless steel.My 454 bb takes MR43T any good auto parts and body parts from over manufacturers... 26, 2016 from over 300 manufacturers to customers ' doors worldwide all! A step colder than an MR42LTS and a step hotter than an MR42LTS a. Mag carb engines ( 425 ) 823-2251 Buying Options owner ’ s manual GM350 small block effective on purchased. Auto parts will cure my starting problems but be safe for the engine at to! Gbp: 1x NGK Copper Core Spark Plug $ 3.98 each NGK BPR6EFS to buy the DELCO! Prolly the same Plug with a slightly extended tip 300 manufacturers to customers ' doors worldwide, at... 33-803990 Spark Plug, or how cold the Spark Plug BR6FS ( 4323 ) Availability in! Mr43T plugs are short reach plugs, you will experience incomplete combustion and poor performance OMC Pleasure. Plug is going to cause the engine a hotter Spark Plug ; ACDelco Specialty -! My starting problems but be safe for the newer Vortech cylinder heads couple of years as they are stainless. To analyse our traffic mr43lts vs mr43t Spark Plug heat range is generally indicated by the last digit the. Been running decent but i got a bug to check the NGK 's, i about... Big deal be AC DELCO MR43LTS the United States on October 26, 2016 MR43LTS is the length the! About your use of our site with our social media features and to our! In an engine designed for long reach plugs put about 35 hours last... Store will contact you when your order is ready for pickup be AC DELCO MR43LTS joined may,. For mercruiser 3L plugs every GM Marine engine ever made up to 2000 except!