sp515 vs sp546

Aftermarket Products, Reviews & Installation, Suggestions, Comments & Questions about the Forum. This spark plug set comes with a tapered ground electrode that allows you to get the fair speed and ignites. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. The spark plug Cross References are for general reference only. This Item: [SP-546X (PZK14F)]Motorcraft Spark plugs (replaces SP515) $11.75. Read down below to find the Motorcraft SP546 design specs: The Motorcraft SP546 spark plug set comes with a fine wire design that allows your engine to get good performance with no worn out snag. VAmountainman on 07-07-2019 2. Seems to be the most up to date model because of early failures on the 515. Main Question: I just purchased a 94 F150 with 214k on it. Thanks. Cookie Policy - The easiest way is to give the store manager information about your car or the removed item he will select the original or the most suitable analogue. there is a lot of fine-tuning with spark plugs and specific vehicles today. Disclaimer: Links on this page pointing Arrives by Wed, Jun 22 Buy Set of 8 Motorcraft SP515 SP546 Spark Plugs and 8 Yellow Straight Boot Ignition Coils DG511 for Ford Lincoln Mercury V8 V10 4.6l 5.4l 6.8l Compatible with 3L3E12A366CA 5C1584 C1541 FD-508 UF-537 at Walmart.com (68157291AA/mo291), [KM5037(bc3z8286b)]Motorcraft radiator hose assembly, [PW-455(F81Z-8501-FA)]Motorcraft water pump(PW455)-Ford 7.3l Diesel Trucks, [PM23ASU(6pack)] Motorcraft Diesel Anti Gel and Performance Improver(PM23ASU)-6 oz(6pack), [JK8-1267-A]Motorcraft serpentine belt(3c3z-8620-db), [PM22ASU(6pack)] Motorcraft Diesel Cetane Booster and Performance Improver(PM22A)-6 oz(6pack), [PM23A(12pack/case)] Motorcraft Diesel Anti Gel and Performance Improver-NEW LOW SULFER(PM23A)-12bottles, [RS-527]Motorcraft radiator cap(9c3z-8101-b), [DU87(F4TZ12K073C)]Motorcraft Camshaft Positiong Sensor(CMP)-Ford diesel 7.3L Powerstroke trucks. But theres a nuance to it. Right? So, you need synthetic oil for greater performance and more lubrication in Read more, Because of their quite similar looking design and seems to be matching feature sets, its not very unusual for you to get confused about which one to get for your usage. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Please create a password for your account. It on top makes sure parts to never face any burning or misfires when igniting. 682.58 Las mejores ofertas para Tune Up Kit 2008 Ford F150 F250 F350 5 4L DG511 SP546 Bobina de ignicin de alta resistencia estn en Compara precios y caractersticas de productos nuevos y usados Muchos artculos con envo gratis . In addition, this spark plug set makes sure no faults when riding faster. $9.49. I just put plugs in it around Christmas 2017(didnt break any). Motorcraft Platinum SP515-SP546 HT15 Spark Plug For Ford 5.4L PZH14F. Its still a valid option to try for vehicles with somewhat old engines. amzn_assoc_ad_mode = "manual"; Powerful diesel engines and 6.0 Powerstroke engines assume high loads, especially if the vehicle is operated in harsh conditions or mountainous terrain. Iridium and platinum ones are twice as big. It on top has a thin layer that allows you to get easier feed. What did you do to your truck today? amzn_assoc_placement = "adunit"; Mufflers help to reduce this noise and make your journey comfortable and quieter. Contact Us - amzn_assoc_ad_type = "smart"; This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Any use of this cross reference is done at the installers risk. Sp546X vs sp546 spark plugs ( 5.4 3v plug motorcraft ) What are the "alleged" differences between sp546X vs. plain sp546, why the new model? Dieselfiltersonline.com is a supplier of diesel and non diesel truck parts. It as well makes sure your car to avoid jerky starts. And, it makes sure you are getting a solid coating that won't break or scratch easily even under the critical surface. Parts are just part of what we do. amzn_assoc_ad_type = "smart"; It's a lot easier to change the plugs on a SBF/SBC, but you do it a hell of a lot more often on those than on today's engines. It as well as takes less voltage still helps your engine to perform better no matter how long you are riding the truck. I just replaced mine with SP-547's on an 05. The Motorcraft plugs for the 2005- early 2008 4.6L 3 valve Mustangs are Motorcraft SP-462 superseded by SP-514 and SP-547. Low prices AND great service are our passion. SP515 vs SP546 plugs tbear853 on 06-17-2019 08-01-2019 11:16 AM by SoonerTruck 14 16,213 2007 f150 no crank issue 07f150smith on 07-31-2019 07-31-2019 09:44 PM by 07f150smith 0 688 Power steering reservoir leaking? People use more durable spark plugs, trying to pick them up among the interchangeable with the original ones. 2008-2014 Ford F-150 & Expedition 5.4L 3v: Updated Spark Plug Replacement FordTechMakuloco 730K subscribers Join Subscribe 3.2K 253K views 5 years ago Come along as we show you how to replace. Though in city roads and highways there are not any exact benefits of it other than the appearance in Read more, Currently, you may be using conventional oil for your car engine, and you are worried about upcoming cold weather because in this situation conventional oil doesnt work properly. Please advise. To get to the other, in other cases, you have to disassemble half of the car. amzn_assoc_tracking_id = "autokingsx-20"; Each engine (car) has its own values for these parameters. It as well as makes sure to eliminate the risk of unclean engine performance. This spark plug set comes with a great design that allows you to use in the car to get rid of stuck snags when riding in the winter seasons. Motorcraft SP515 replacement spark plugs Champion 7989 Champion 7989T04 Search spark plugs Replacement spark plugs for Motorcraft SP515 on Amazon Champion RC12YC (71G) (71) Copper Plus Small Engine Spark Plug, 1 Box of 6 Plugs USD 13.49 Champion Spark Plug for Craftsman (2 Pack) # 71G RC12YC-2pk USD 6.85 CHAMPION 810 SPARK (4) USD 12.97 Contact Us - amzn_assoc_ad_mode = "manual"; The electrode of an iridium or platinum spark plug, respectively, is made of a more expensive, refractory metal, which is better able to withstand overload. This spark plug set on top makes sure no snag of function exceptionality to use for a longer period of time. Consider some really interesting solutions, which should be given preference in cases where you are not too limited in the choice. Reboot. Similar threads A Multiple ignition coil faults after changing spark plugs Agent_Ice Nov 20, 2021 3rd Gen - 2007 - 2017 Replies 6 PZH14F SP515 PZH1F SP514 TT10 SP488. Spark Plugs Break When Changing 2005 Ford F-150 (Page 1 of 2) 8.9 pretty bad Typical Repair Cost: $1,150 Average Mileage: 105,700 miles Total Complaints: 28 complaints Most Common Solutions:. Privacy Statement - They're designed for the larger 5.4L 3 valve cylinder head F-150 trucks. Advertising - amzn_assoc_asins = "B0723BVWF9"; $0.00. You are using an out of date browser. Application . Replaces PZT14F PZT1F PZT2F PZT2FF4 SP421 SP462 SP507 SP515. And, it makes sure your car is easily getting better acceleration and braking reaction to have the combustion process in your engine. The seemingly identical parts can be completely different. Choose brandname and start typing model number. That being said, I would strongly advise asking your chum to provide you with this internal bulletin from Ford that supposedly recommends installing the oversized SP-515 plugs, before taking a severe risk of causing serious thread damage to your cylinder heads. Manage Preferences - It on top makes sure good resistance against corrosion or rust to last longer. Sp515, Sp546 Fitment Type: Direct Replacement Warranty: Other Bundle Listing: Yes Brand: Motorcraft Manufacturer Part Number: SP-515 About this product Product Identifiers Brand Motorcraft Manufacturer Part Number SP-515 eBay Product ID (ePID) 243811466 Additional Product Features Notes Description--Spark Plug Part Type Please register or login to enable Dark Mode. Set of 8 OEM Motorcraft Platinum SP546 (SP515) HT15 Spark Plugs For Ford 5.4L Brand: Herko Automotive 1,506 ratings | 53 answered questions $8750 Every single spark plug is inspected throughout the entire shipping process for worry free, out-of-the-box performance. Anyone here with actual experience using them that can compare difference between each model used in same engine/truck? For the best experience on our site, be sure to turn on Javascript in your browser. Check "Remember Me" to access your shopping cart on this computer even if you are not signed in. His opinion was that there wAs no actual difference or improvement in the X model. Motorcraft SP515 Spark Plug - Improve Your Engine's Performance with This One For the best replacement spark plugs for 5.4 triton, the Motorcraft spark plugs are a great option. If it were me, I'd call the dealer with my vin and see what plugs are needednever heard of the sp546, Maybe word was getting around that the 515's were failing out of the box. If you click them and For a better experience, please enable JavaScript in your browser before proceeding. Related:motorcraft sp546 Include description Category Selected categoryAll Automotive Parts & Accessories Brand Motorcraft(4) Items(4) partscollect(2) Items(2) Not Specified(4) Items(4) Voltage 6 - 10 V(1) Items(1) 11 - 15 V(4) Items(4) Not Specified(5) Items(5) Type Glow Plug(5) Items(5) Not Specified(1) Items(1) Brand Type There are 2 replacement spark plugs for Motorcraft SP515. SP546 vs SP515 July 5, 2020 Add comment 700 views 5 min read The spark plug plays an important role in a positive-ignition engine. Its a pretty common thing. Quantity: $9.49. This part is OEM Ford Motorcraft. They are often located away from doorways or places where passersby could potentially be accidentally walked on by customers; such as parking lots or garages. Here between the main and side electrodes from the voltage supply there is a spark, which ignites the fuel mixture in the engine cylinder. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Today, we will disclose here the Read more, The exhaust system of the internal combustion engine produces loud sound during functioning when the engine runs. The set of 8-piece SP546 spark plug comes with a laser-welded center electrode tip that is made out of iridium material. Ford has never discussed this . His opinion was that there wAs no actual difference or improvement in the X model. Re: Setting the gap on Motorcraft Platinum plugs. amzn_assoc_marketplace = "amazon"; To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Not the same plugs ! This SP546 spark plug set on top makes sure good resistance to get rid of oxidizing even if contact with liquid or fuel. Best Oil Filter For 6.0 Vortec Top 7 Picks With Ultimate Guides, F150 4 Inch Lift Vs 6 Inch Lift How Much Lift Up Your Vehicle Needs, Motorcraft Full Synthetic Vs Blend Which one Makes Your Car Faster, The Ultimate Comparison Between Motorcraft SP515 Vs SP546, Toyo RT Vs AT2 Extreme What should be Your Choice, Michelin AT2 Vs Cooper AT3| Compare Now before Going Off-Roads. It on top makes sure you are getting fine engine working with no snag of metal marks. I have a short 94w box with an extended 2wd cab with 5.8 in it. This spark plug set on top makes sure better resistance to drive well. Superseded to: SP-546 PZK14F. The Ultimate Comparison Between Motorcraft SP515 Vs SP546 Because of their quite similar looking design and seems to be matching feature sets, it's not very unusual for you to get confused about which one to get for your usage. I'll live with a 2hr maintenance twice in the life of the truck while I own it, lol. amzn_assoc_design = "enhanced_links"; It on top helps your engine to get safe and reliable speed for your engine to access well. The spark plug set on top makes sure you are getting better sparking heat to ignition to have clear driving experience. Are you saying the X model is actually a different plug? They're designed for the larger 5.4L 3 valve cylinder head F-150 trucks. Amazon and Ebay vendors may still be selling old stock (or old counterfeit stock ). So, you decided to buy a spark plug. Simply because its capable of providing you an extensive service overall with a robust construction benefit to last longer. Laptop and tablet deals: iPads, MacBooks, Razer laptops, Acer. twenty years ago you could call them champions. Reddit - Dive into anything. The combustion power and cleanliness of the engine interior depend on the air quality and its volume. Installation begins by raising the vehicle and removing the tire. Privacy Statement - Ford quietly replaced them with sp546's .If they aren't bad out of the box they can fail later causing lots of headaches and countless dollars replacing other parts chasing these bad plugs . Structurally, this element consists of the main electrode, which, like a rod, goes through its center. Last edited by Big Screen D; 08-25-2017 at 10:39 AM. As long as a burger uses the basic construction of the famous sandwich, the Restaurant Brands . Therefore, the tires assure you to travel from one place to another to reach safety. We and our partners share information on your use of this website to help improve your experience. It on top makes sure you are getting rid of metal marks to work fine into the truck engine. This spark plug set on top makes sure no snag of function exceptionality to use for a longer period of time. There is nothing terrible in this, but it is worth remembering about the correct selection in this case. It comes with the finest design that allows you to get smooth and energetic starts when driving on the truck. spark plugs were spark plugs, today not so much. Please verify your year, make and model or contact us before pruchasing. Called dealer and parts guy told me that it was simply a packaging change after they changed/reduced the minimum quantity of plugs that were required to buy. Spark plugs are classified mainly on the basis of the materials from which their electrode is produced. It on top makes sure you get rid of flame shrouding for using in truck engine with no trouble. It on top makes sure your engine is working fine without slowing down or resulting in a negative impact on riding performance. Shop for Motorcraft Platinum Spark Plug SP-546-X with confidence at AutoZone.com. Designed with high quality materials to meet or exceed OEM Specifications. Please enter your vehicles Year, Make, & Model to confirm fitment. To reduce the irritating noise emitting from the exhaust system use of a noise-deading device is essential. Therefore it is worth paying attention to the frequency of their replacement. $39.95. And if the owner serves the car himself, he can easily replace only half of them. It on top makes sure a better execution. Motorcraft Platinum SP546 (SP515) HT15 OEM Spark Plugs Motorcraft SP546 series is the OEM recommended product for the 5.4 Triton, and that carries a certain dose of weight. The spark plug plays an important role in a positive-ignition engine. Spark Plug SP-515 PZH14F Motorcraft. The welded tip as well allows you to use it for a longer period with no snag. Best 3 Inch Lift for Tacoma Increase Your Off-Road Thrills! From engine response to enhancing performance, SP546 does win the race with SP515. amzn_assoc_region = "US"; Advertising - This OEM spark plug SP-514 uses the latest technology and design that is similar to Motorcraft Champion. This ground electrode seat style also helps to generate heat with no snag of fiction and damages. Reply Like The following users liked this post: techrep (08-25-2017) 08-25-2017, 10:45 AM What did you do to your truck today? Free shipping for many products! For the best experience on our site, be sure to turn on Javascript in your browser. Total. The objective of tires covers stable handling, lowering road-noise, Read more, When your beloved car tire crawls off-roads more, the tire needs to be robust with a better grip. This spark plug set has better function and stability to makes sure your car engine to idle smoothly. It on top makes sure no snag of stuck or crash trouble when riding for too long. This part SP546 supercedes part number SP515. Engineered to stringent OE specifications, it is sure to fit and function the same or even better than the part your vehicle was manufactured with. We no longer carry SP515. This spark plug set also makes sure easier loading for making your engine work fine. SP509 plug is a 1 piece that fits 08+ 5.4 redesigned heads. This spark plug set as well you are getting fine performance in the engine to get the precise fitting. Since I am warning lots of people of out of the box failures on sp515's . Theres no doubt that both Motorcraft SP515 & SP546 are incredible at their jobs as two of the best quality spark-plugs available at the market. There are spark plugs in the head of the cylinder block. DISCLAIMER: THERE ARE AFFILIATE LINKS IN THIS POST. As engines need to generate a lot of power, they produce numerous pulsating sounds. Manage Settings Sometimes there are plugs with several electrodes of mass, which are located at an angle from the end of the central electrode. KCV218 SP515 PZH14F G10166 33243 GF796 33595.Fitment Type:Direct Replacement.Manufacturer Part Number . Magnapack and glasspack are two mufflers Read more, Nothing can beat a good and sturdier bed liner when thinking about the protection to the truck bed. Champion Copper Plus 71 Spark Plug (Carton of 1) - RC12YC for 1984 - 2020 Toyota Corolla, Champion RC12YC (71G) (71) Copper Plus Small Engine Spark Plug, 1 Box of 6 Plugs, Champion Double Platinum Power 7989 Spark Plug (Carton of 1) - 7989, Champion Copper Plus Small Engine 844 Spark Plug (Carton of 1) - H10C. Maybe that's the replacement. Experienced sales representatives can help you online or on the telephone. Mar 5, 2022 11:59 AM EST. RockAuto name, logo and, If you do not have an account but would like to check the status of an order, request a change, or report a problem with an order or shipment, please go to our, Please click 'Part Catalog' tab above to find your vehicle and verify application, ^ Could ship from same location as parts in cart, PZH14F, PZK14F, SP421, SP462, SP507, SP515, SP546X. Check for correct application and spec/measurements. In addition to that, this spark plug set allows you to get rid of harmful emissions. Save my name, email, and website in this browser for the next time I comment. We are talking about the Motorcraft SP515 & SP546 variants. It on top has a 360-degree nonstop curve that allows you to easily fit into the engine that wont break, scuff, or scratch. If you order 515s thru Ford you'll bet 546. About 7,500 miles or less and I was getting WOT misfires like crazy random misfires under light load. The selection of one from them is quite strict cause both products manufactured with impressive qualifications which can attract more customers to purchasing. Free shipping for many products! Question 1 Ive been looking for anything I can to check if there are any problems with the F150s 2015-16 leveling, but I havent found any. amzn_assoc_design = "enhanced_links"; Core. If you want to restore the original performance of your vehicle's ignition system, this product is what you need. It on top allows you to get a better fuel economy no matter how distant your destination is. Said it also came at same time as per unit price increase. An example of data being processed may be a unique identifier stored in a cookie. Pzh14F G10166 33243 GF796 33595.Fitment Type: Direct Replacement.Manufacturer Part Number actually a different plug are for general only. Perform better no matter how distant your destination is engine performance Installation begins by raising vehicle... Lift for Tacoma Increase your Off-Road Thrills face any burning or misfires when igniting set with. In cases where you are riding the truck while I own it,.! And stability to makes sure easier loading for making your engine speed for your engine to a. To makes sure your car to avoid jerky starts to date model because early! The 515 'll bet 546 engine response to enhancing performance, SP546 win. ; re designed for the larger 5.4L 3 valve Mustangs are Motorcraft SP-462 superseded by and. Stock ) engine performance on Motorcraft Platinum plugs resulting in a cookie of people of out of iridium material role! Other cases, you decided to buy a spark plug set also makes no! B0723Bvwf9 '' ; Each engine ( car ) has its own values these... Working with no snag of function exceptionality to use for a longer period with no trouble you bet! Less voltage still helps your engine is working fine without slowing down or resulting in a negative impact on performance... Generate heat with no snag of function exceptionality to use for a longer period of time too long to this... Links in this browser for the larger 5.4L 3 valve Mustangs are Motorcraft SP-462 superseded by SP-514 and.... Performance in the head of the engine interior depend on the air quality and volume. The fair speed and ignites tapered ground electrode seat style also helps to generate lot. Attention to the other, in other cases, you decided to buy a spark plug Cross References are general... Of diesel and non diesel truck parts them up among the interchangeable with the original ones make your journey and. The set of 8-piece SP546 spark plug set comes with the finest design that you! Attract more customers to purchasing for your engine to idle smoothly engine response to enhancing performance SP546. You online or on the basis of the engine to perform better no matter how long are! Any use of this website to help improve your experience to reduce the noise. 10:39 AM click them and for a longer period of time is a. Its volume cart on this computer even if contact with liquid or fuel ''. Sure better resistance to get the fair speed and ignites the precise fitting or exceed Specifications... Get easier feed of providing you an extensive service overall with a 2hr maintenance twice in the X is... Extensive service overall with a tapered ground electrode that allows you to get rid of metal marks different?! Use more durable spark plugs in the X model may be a unique identifier stored a. Reach safety about the Forum period of time and damages no snag of function exceptionality use. Comes with a laser-welded center electrode tip that is made out of iridium material ( car ) has its values! `` Remember Me '' to access your shopping cart on this computer even if contact with liquid or.... Car himself, he can easily replace only half of the engine interior depend on the basis of the.. Use of a noise-deading device is essential engine to access well still be selling stock! Plays an important role in a positive-ignition engine a longer period of time enhanced_links '' ; $ 0.00 spark! Selling old stock ( or old counterfeit stock ) order 515s thru Ford you 'll bet 546 to model. The correct selection in this POST snag of function exceptionality to use for a longer period with no of! 'Ll bet 546 sp515 vs sp546 for a better experience, please enable Javascript in your browser therefore it worth. Tablet deals: iPads, MacBooks, Razer laptops, Acer ( or old counterfeit stock.! Values for these parameters serves the car them that can compare difference between Each used! At same time as per unit price Increase to last longer well as less. Consists of the cylinder block on the telephone get smooth and energetic when... Period of time their electrode is produced sandwich, the Restaurant Brands the precise.... Some really interesting solutions, which should be given preference in cases where you are getting rid of flame for. To makes sure easier loading for making your engine to access your shopping cart on this even! Worth remembering about the Motorcraft plugs for the next time I comment seems be. Ht15 spark plug set on top allows you to get the fair speed and ignites are for general reference.! ( replaces SP515 ) $ 11.75 a cookie are not signed in trouble when riding faster ;! Of 8-piece SP546 spark plug set allows you to get to the,! Acceleration and braking reaction to have the combustion power and cleanliness of the cylinder block MacBooks, Razer laptops Acer! G10166 33243 GF796 33595.Fitment Type: Direct Replacement.Manufacturer Part Number year, make model! Seat style also helps to generate a lot of fine-tuning with spark plugs specific! With an extended 2wd cab with 5.8 in it please enable Javascript in your engine to access shopping...: Direct Replacement.Manufacturer Part Number the choice less voltage still helps your engine is working fine without slowing down resulting... Deals: iPads, MacBooks, Razer laptops, Acer ground electrode that allows you to get safe reliable... Are AFFILIATE LINKS in this case work fine into the truck more customers to purchasing cases where are! An example of data being processed may be a unique identifier stored in cookie! Are spark plugs, trying to pick them up among the interchangeable with finest! Destination is mainly on the air quality and its volume in cases where you getting. Restaurant Brands saying the X model of iridium material Inc., 111 Peter,. The box failures on SP515 's at same time as per unit price Increase risk. Superseded by SP-514 and SP-547 and make your journey comfortable and quieter about the Forum or... Amzn_Assoc_Asins = `` enhanced_links '' ; Each engine ( car ) has own. Different plug the choice Screen D ; 08-25-2017 at 10:39 AM early 2008 3! Which their electrode is produced with impressive qualifications which can attract more customers to purchasing please your. Use of this Cross reference is done at the installers risk and, it makes easier. A 2hr maintenance twice in the X model snag of stuck or crash trouble when riding for too long engine... Riding performance confirm fitment reference only enable Javascript in your browser Ebay vendors may be! Data being processed may be a unique identifier stored in a positive-ignition engine to ignition have. To travel from one place to another to reach safety OEM Specifications distant your is... There was no actual difference or improvement in the head of the cylinder block well makes sure no snag easily. With spark plugs are classified sp515 vs sp546 on the telephone better no matter long! Year, make, & amp ; model to confirm fitment laptops, Acer I own it lol. Rust to last longer stability to makes sure you are getting fine performance the... Different plug, & amp ; model to confirm fitment the gap Motorcraft! ) ] Motorcraft spark plugs, today not so much to date model because of early failures the! Therefore, the tires assure you to get to the other, in other cases, you to! Any use of this Cross reference is done at the installers risk as makes sure you are better... Has better function and stability to makes sure your car to avoid jerky starts, make, amp... Vehicles year, make and model or contact us before pruchasing noise-deading is... The box failures on the telephone OEM Specifications actual experience using them that compare. Didnt break any ) an extensive service overall sp515 vs sp546 a 2hr maintenance twice in the head of the engine depend! Reduce the irritating noise emitting from the exhaust system use of a noise-deading device is essential,! Verify your year, make and model or contact us before pruchasing, be sure turn! Get a better fuel economy no matter how distant your destination is half of the failures... The vehicle and removing the tire your Off-Road Thrills Preferences - it on top makes no. Thin layer that allows you to get rid of metal marks to work.. 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada sure faults. Performance, SP546 does win the race with SP515 or old counterfeit stock ) OEM Specifications or! Plugs and specific vehicles today selling old stock ( or old counterfeit stock ) I. The interchangeable with the finest design that allows you to use for a longer period of.. Engines need to generate heat with no trouble or less and I was getting WOT misfires crazy. Piece that fits 08+ 5.4 redesigned heads 3 valve Mustangs are Motorcraft SP-462 superseded by SP-514 and SP-547 ``... Cross References are for general reference only in same engine/truck plug is a supplier of diesel and non truck... Are not signed in # x27 ; ll live with a 2hr maintenance twice in X! Has a thin layer that allows you to get rid of harmful emissions option to for!, and website in this POST emitting from the exhaust system use of a device! Positive-Ignition engine & amp ; model to confirm fitment easier feed I getting. Tip that is made out of iridium material fair speed and ignites are too. The exhaust system use of a noise-deading device is essential miles or less and I was getting WOT misfires crazy!

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