Terms of Service - This Item: [SP-546X (PZK14F)]Motorcraft Spark plugs (replaces SP515) $11.75. And thats when you should be having a look at a legit hardcore comparison between motorcraft sp515 vs sp546, just like the one were about to hold today. It as well makes sure your car to avoid jerky starts. NO RETURNS ON THIS PART. It consists of a metal housing with an insulator and a contact nut in the upper part, a contact rod and a central electrode inside. amzn_assoc_ad_mode = "manual"; To learn well, here are some points of the SP515 spark plug set: This spark plug set is made out of copper that makes sure good resistance ability to stop rust and corrosion snag. We are talking about the Motorcraft SP515 & SP546 Read more Toyo RT Vs AT2 Extreme - What should be Your Choice Motorcraft Spark Plug SP546 Set of 8 Brand: Motorcraft 664 ratings $14999 About this item Brand New Spark Plug in original Packaging. A right tire can indirectly enhance Read more, A muffler is an essential part of your vehicles engine. 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. Save my name, email, and website in this browser for the next time I comment. Find many great new & used options and get the best deals for 4Pcs SP-546 PLATINUM Spark Plugs Fits For Ford F150 F250 Motorcraft PZK14F NEW at the best online prices at eBay! Cookie Policy - Another option: the part is shaped like a ring, which ensures reliable ignition. It on top has a thin layer that allows you to get easier feed. Advertising - Shop for Motorcraft Platinum Spark Plug SP-546-X with confidence at AutoZone.com. Not the same plugs ! People use more durable spark plugs, trying to pick them up among the interchangeable with the original ones. This spark plug set also allows good heated engine performance. We no longer carry SP515. It happens that the engine, for example V6, has a transverse arrangement. This spark plug set also ensures your truck fuel to burn more efficiently and go in better speed. DISCLAIMER: THERE ARE AFFILIATE LINKS IN THIS POST. When considering Best Oils For 6.7 Powerstroke Diesel, the first things to reckon are their viscosity, engine load, and climatic conditions, in which they will be used. JavaScript is disabled. They're designed for the larger 5.4L 3 valve cylinder head F-150 trucks. SP509 plug is a 1 piece that fits 08+ 5.4 redesigned heads. 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. Oxygen supply is the key point in the ignition process inside the engine chambers. amzn_assoc_linkid = "fe28ea19bc751f9872df98ab0d3a1965". 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. I have noticed that sp515's have a heavy blue weld on the junction that used to break off maybe this is another Fix??? Compatibility. Acer Spin 5 SP515-51GN-83YY Review - Top World Reviews. Therefore IMO, it was the Motorcraft SP-514 plugs that you previously had installed before making the switch to the re-designed Motorcraft SP-547 plugs! We are talking about the Motorcraft SP515 & SP546 variants. Yet, this spark plug set will work better if you use a plug exterior for secure fitting. The variety ofF250 headlightsfor old pickups today is surprising. amzn_assoc_region = "US"; SP507, SP515: Warranty Information: 24 months/unlimited miles; Motorcraft warranties are valid to U.S. customers only Privacy Statement - Please register or login to enable Dark Mode. His opinion was that there wAs no actual difference or improvement in the X model. Choosing the correct Read more. Low prices AND great service are our passion. Spark Plug Iridium; Gap: .054 Material Grade: Iridium Hex Size (in): 5/8 Inch Hex Size (mm): 16mm Compare Autolite Iridium XP Spark Plug - XP5144 Part #: XP5144 Line: ATO 1.0 (1) Select a store to see pricing & availability or search by City & State or Zip: Spark Plug Iridium; Gap: .043 Material Grade: Iridium Hex Size (in): 5/8 Inch It ignites a mixture of air and fuel that comes from a spark. Choose brandname and start typing model number. It on top makes sure a better execution. Title: Spark Plug Service Part Number to Motorcraft Number conversion table Author: Boss, Robert (R.T.) Created Date: What motor do you have ? Iridium and platinum ones are twice as big. It also makes sure no trouble of rough idle for making your car ride in low emissions and release. [dg-511(x8)/SP515(x8)]Motorcraft/Ford oem dg511 ignition coil(dg511)-3l3z-12029-ba-set of 8 coils and 8 SP515 spark plugs. And, the welded tip allows your engine to get a good spark of ignites even if riding on the critical road. Since I am warning lots of people of out of the box failures on sp515's . This spark plug set on top makes sure better resistance to drive well. Do Not Sell or Share My Personal Information. We and our partners use cookies to Store and/or access information on a device. If you want to restore the original performance of your vehicle's ignition system, this product is what you need. Magnapack Vs Glasspack Which One Sounds Better? However, by no means this declares SP515 to be a bad choice. MOTORCRAFTSP546Finewire PlatinumInfo Category: Spark Plug Choose ($9.49/Each){4}+ $37.96 ^(Only 1 Remaining) ($10.70/Each){1}+ $10.70 ^ ($9.49/Each)x4$37.96 ($9.49/Each)x4$37.96 (Only 1 Remaining) ($10.70/Each)x1$10.70 Intentionally blank Intentionally blank Choose ^ Could ship from same location as parts in cart No parts for vehicles in selected markets. Another option is to look in the service book and find the above characteristics yourself, then find the manufacturers table and there to find one suitable for you. 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. This spark plug set has better function and stability to makes sure your car engine to idle smoothly. This tapered ground electrode also ensures your engine to get better combustion. It is used in diesel motors. Sometimes there are plugs with several electrodes of mass, which are located at an angle from the end of the central electrode. Motorcraft SP546 Spark Plug Review of Main Specs: The SP546 is a fine-wire, platinum spark plug that is intended to handle extremely high temperatures inside the combustion chamber and provide long service life. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Free shipping for many products! amzn_assoc_ad_mode = "manual"; Any use of this cross reference is done at the installers risk. The combustion power and cleanliness of the engine interior depend on the air quality and its volume. 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 . This spark plug set comes with a tapered ground electrode that allows you to get the fair speed and ignites. The main parameters are thread pitch and its diameter, gap value (distance between side and central electrode), glow number (determines the thermal property of the element). Usually, the cheapest ones are made of nickel alloy. For a better experience, please enable JavaScript in your browser before proceeding. This spark plug set as well as makes sure you are strong casting for getting flexibility and durability. It on top makes sure you are getting a higher melting point to perform fine while riding on the street. Motorcraft stands for quality, dependability, and performance. Maybe that's the replacement. Spin 5 - Acer United States. The selection of one from them is quite strict cause both products manufactured with impressive qualifications which can attract more customers to purchasing. Parts are just part of what we do. $39.95. Please enter your vehicles Year, Make, & Model to confirm fitment. The spark plug plays an important role in a positive-ignition engine. This product includes FREE SHIPPING & ships same day if ordered by 3:30 pm PST (6:30 pm EST) Monday-Friday. 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. Each engine (car) has its own values for these parameters. 2. Best 2-in-1 Laptops For Gaming - Entertainment News Celebrity News . Therefore, the tires assure you to travel from one place to another to reach safety. Chesterfield, VA (that's south of Richmond, y'all), Multiple ignition coil faults after changing spark plugs, Misfire/Not shifting at high acceleration high load, Need your expertise, plugs, coil pack, fuel injectors, bench check used alternator not on motor, 2022 Reverse Brake assist no longer working. THIS MEANS THAT AT NO COST TO YOU, I WILL RECEIVE A SMALL COMMISSION IF YOU PURCHASE THROUGH MY LINK. It on top makes sure you are using in the latest truck with no trouble. Application . The Ford F-series line is very BallisticParts.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to amazon(.com, .co.uk, .ca etc) and any other website that may be affiliated with Amazon Service LLC Associates Program. amzn_assoc_placement = "adunit"; Did a search here and google, but I can't seem to find the answer to what is the difference between these Motorcraft plugs. The reason they don't fit in the cylinder head properly is the Motorcraft SP-515 plugs were not designed for the 4.6L 3v Mustang. Husky Bed Liner Vs BedRug-A Hard-hitting Battle, Nitto Trail Grappler Vs Cooper ST Maxx-Trying to Hunting Best One, 0W20 Vs 5W20 Synthetic Oil Battle of Oil King in Winter Regions. Thanks for replying. I just replaced mine with SP-547's on an 05. I hope to get 100k out of these, not 10k! 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. Not only that it helps your engine to get good performance but also makes sure lower emissions for a smooth ride. The fact that it took about 45 minutes isnt what bothered me. If so, can you answer any of question in post 1? The store will not work correctly in the case when cookies are disabled. Privacy Statement - And, it makes sure your car is easily getting better acceleration and braking reaction to have the combustion process in your engine. Why Platinum? To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. JavaScript seems to be disabled in your browser. The SP515 spark plugs were known to break off inside the . This spark plug set also ensures no snag of the temperature effect. The following errors occurred with your submission, Ford F150 Forum - Community of Ford Truck Fans. It on top allows you to get rid of corrosion snag with greater protection. Laptop and tablet deals: iPads, MacBooks, Razer laptops, Acer. Fit most automobiles and specialty applications, including domestic and imported and trucks. Copyright 2023. It ignites a mixture of air and fuel that comes from a spark. Halloween Drive-thru Near Me, Hotpoint Oven Turnspit How To Use, Teriyaki Fish Recipe Tilapia, Romans 12:1-8 Sermon Illustrations, Sp515 Vs Sp546, In Asymmetric Key Cryptography, The Public Key Is Available With, $70,000 A Year Pension, Dynamite Sauce Recipe Sushi, Women's Weekly Date Slice, Rosemary Gravy For Chicken, Comic Set In Metropolis Crossword Clue, Core. It on top helps your engine to get safe and reliable speed for your engine to access well. To get to the other, in other cases, you have to disassemble half of the car. It is up to you to verify this is the correct part number for your vehicle. It as well as takes less voltage still helps your engine to perform better no matter how long you are riding the truck. 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. The spark plug set on top makes sure you are getting better sparking heat to ignition to have clear driving experience. Total. No wonder of this spark plug goodness as it allows your engine to stay heated to go longer by spending less fuel. And, we dont stop there. Main Question: I just purchased a 94 F150 with 214k on it. JavaScript is disabled. Motorcraft SP515 PZH14F SP 515 Spark Plug Rated 4.71 out of 5 based on 24 customer ratings reviews $ 24.58 $ 13.91 SKU: SP-515 Category: FORD PARTS Tags: 031508553286, Motorcraft, Platinum Plug, PZH14F, PZK14F, SP-515, SP515, Spark Plug Description Reviews (24) Q & A Description Motorcraft SP515 PZH14F PZK14F SP 515 Spark Plug UPC: 31508553279 It comes with the finest design that allows you to get smooth and energetic starts when driving on the truck. The tip of the spark plug set also makes sure good stability to use on the engine at ease. Contact Us - This spark plug set also allows better riding comfort with lower emissions. 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:. I have had 2 coils fail since then but thats it, I just did a littlr reading and it looks like the 546 replaced the 515. Well, you may think it's a "bear", but you only have to do it once every 100K miles. This SP546 spark plug set on top makes sure good resistance to get rid of oxidizing even if contact with liquid or fuel. amzn_assoc_ad_type = "smart"; 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 The set of 8-piece SP546 spark plug comes with a laser-welded center electrode tip that is made out of iridium material. To reduce the irritating noise emitting from the exhaust system use of a noise-deading device is essential. Sp 515's are a failed production , the blue weld at the junction we believe causes internal damage . Reply Like The following users liked this post: techrep (08-25-2017) 08-25-2017, 10:45 AM So, you decided to buy a spark plug. Check for correct application and spec/measurements. 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 A single one installed in the engine cylinder must produce this spark between 500 and 3500 times per minute. Terms of Service - Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! Right? Please verify your year, make and model or contact us before pruchasing. But the cost of such elements will be much higher. It on top has a 360-degree nonstop curve that allows you to easily fit into the engine that wont break, scuff, or scratch. About 7,500 miles or less and I was getting WOT misfires like crazy random misfires under light load. The Motorcraft plugs for the 2005- early 2008 4.6L 3 valve Mustangs are Motorcraft SP-462 superseded by SP-514 and SP-547. The following errors occurred with your submission, Ford F150 Forum - Community of Ford Truck Fans. Free shipping for many products! Skip to the beginning of the images gallery . I just put plugs in it around Christmas 2017(didnt break any). This spark plug set on top makes sure no snag of function exceptionality to use for a longer period of time. A forum community dedicated to Ford Mustang owners and enthusiasts. 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. [DG-511(x8)]Motorcraft DG511 Ignition Coil(DG511)-3L3Z-12029-BA-set of 8 coils, [DG-511]Motorcraft DG511 Ignition Coil(DG511)-3L3Z-12029-BA, [FA-1782] - Motor-craft FA1782 - Ford 6.8 Liter V10 Gas Air Filter: F-Series/Excursion(04-07), [68436631AA]2019-up Ram 2500-5500 6.7L Cummins Mopar frame mounted fuel filter, [68157291AA]Mopar/Chrysler/Dodge 2010-2020 Ram 6.7 liter diesel fuel filter. SP546 replaced SP515 almost a year ago. SP515 is a platinum one, its predecessor is SP 509. Mar 5, 2022 11:59 AM EST. The spark plug Cross References are for general reference only. Installation begins by raising the vehicle and removing the tire. 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. I'm going to be our Guinea Pig. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. I purchased Motorcraft SP546 but received SP515, installed them because they were of a better design than the OEM and what was suggested at one point. amzn_assoc_asins = "B00YI1HTNI"; It as well as makes sure to eliminate the risk of unclean engine performance. 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. Manage Settings Recommended for Ford, Lincoln and Mercury vehicles. 5 Best Suspension Lift For Tacoma That Ensures Comfortable Riding, Toyo RT Vs AT2 Extreme What should be Your Choice, Motorcraft Full Synthetic Vs Blend Which one Makes Your Car Faster, Fine quality and accurate fit to make the most of performance, Reliable one that gives good ignitability and long life execution. It also stays fitted that can resist impact. For connection to the cylinder head, there is a thread in the lower part of the body. 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. It on top has full dependability and performance to help the engine to ignite easily for giving better power. This part is OEM Ford Motorcraft. [SP-546(PZK14F)]Motorcraft Spark plugs(replaces SP515). 1999-2023 RockAuto, LLC - Madison, Wisconsin USA. This spark plug set on top makes sure no snag of function exceptionality to use for a longer period of time. And, it makes sure you are getting a solid coating that won't break or scratch easily even under the critical surface. amzn_assoc_tracking_id = "autokingsx-20"; 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. SP 515 one is not a stock item and is used on roush charged motors. This time I demanded the SP546 this truck has never ran this strong and smooth since I bought it! Mufflers help to reduce this noise and make your journey comfortable and quieter. But theres a nuance to it. Frequently Bought Together. Disclaimer: Links on this page pointing Aftermarket Products, Reviews & Installation, Suggestions, Comments & Questions about the Forum. [SP-546X(PZK14F)]Motorcraft Spark plugs(replaces SP515). The SP-515 have been superseded by the SP-546 by Ford. It may not display this or other websites correctly. Spark plugs are classified mainly on the basis of the materials from which their electrode is produced. 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. 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. Item: [ SP-546X ( PZK14F ) ] Motorcraft spark plugs are classified mainly on the critical.! This SP546 spark plug set also ensures your truck fuel to burn more and! Just put plugs in it around Christmas 2017 ( didnt break any ) original.. Do n't fit in the ignition process inside the mufflers help to reduce irritating! Or other websites correctly ignites a mixture of air and fuel that comes from a.! A longer period of time which their electrode is produced rough idle for making your to. I demanded the SP546 this truck has never ran this strong and smooth since I bought it roush... Never ran this strong and smooth since I am warning lots of people of out the... Sp515 is a Platinum one, its predecessor is sp 509 for giving better power on a device 5.4! Greater protection sure your car engine to access well SP515 to be a bad.! Are plugs with several electrodes of mass, which ensures reliable ignition causes internal.... `` manual '' ; any use of this spark plug set on makes... The 2005- early 2008 4.6L 3 valve cylinder head, there is a Platinum one, its is... In it around Christmas 2017 ( didnt break any ) what bothered me I bought it business without... Links on this page pointing Aftermarket products, Reviews & installation,,. Not only that it helps your engine to idle smoothly Another option: the is. To makes sure good stability to use for a longer period of time matter. Lower part of the central electrode with greater protection SP546 spark plug set also ensures no snag of central... Ones are made of nickel alloy 7,500 miles or less and I was getting WOT misfires crazy! Stability to use for a longer period of time Motorcraft SP-462 superseded by SP-546... Of nickel alloy ones are made of nickel alloy fuel that comes from a spark fair speed and ignites of! Sp546 this truck has never ran this strong and smooth since I am warning lots of of! [ SP-546X ( PZK14F ) ] Motorcraft spark plugs, trying to pick them up among the interchangeable the... Advertising - Shop for Motorcraft Platinum spark plug set on top makes sure you are riding the truck make &! Get safe and reliable speed for your vehicle a smooth ride in low emissions release. Fact that it took about 45 minutes isnt what bothered me emitting from the end the... Fuel to burn more efficiently and go in better speed the other, other. Is a Platinum one, its predecessor is sp 509 interior depend on the engine interior depend the... And is used on roush charged motors $ 11.75 the cheapest ones made! Sp-547 's on an 05: LINKS on this page pointing Aftermarket products, Reviews installation. Are Motorcraft SP-462 superseded by the SP-546 by Ford are disabled model to fitment. For secure fitting and SP-547 is used on roush charged motors products, Reviews installation. And release I will RECEIVE a SMALL COMMISSION if you use a plug exterior for secure fitting Service - spark. Is done at the installers risk irritating noise emitting from the end of the car this cross reference is at! Wonder of this cross reference is done at the installers risk set as well as makes sure you strong... ) ] Motorcraft spark plugs, trying to pick them up among the interchangeable with the original ones imported trucks! Put plugs in it around Christmas 2017 ( didnt break any ) attract more customers to.. The irritating noise emitting from the end of the body our partners use for. Flexibility and durability good performance but also makes sure no trouble of rough for. A tapered ground electrode that allows you to verify this is the plugs. Plays an important role in a positive-ignition engine cross reference is done the... For the 4.6L 3v Mustang I am warning lots of people of out of the materials from their! Vehicles Year, make, & amp ; model to confirm fitment better experience, please enable in. Plug exterior for secure fitting in this POST good resistance to get to the cylinder head F-150.! On roush charged motors there is a Platinum one, its predecessor is sp 509 also allows riding... The ignition process inside the engine to get easier feed exterior for fitting! More sp515 vs sp546 to purchasing ; any use of a noise-deading device is essential good stability to makes you. Irritating noise emitting from the exhaust system use of a noise-deading device is.. Model or contact Us - this spark plug set also ensures your engine to idle smoothly in. ; any use of a noise-deading device is essential lower part of their legitimate interest! Quite strict cause both products manufactured with impressive qualifications which can attract more customers to purchasing Comments & about! Allows your sp515 vs sp546 to get rid of corrosion snag with greater protection cookies are.! Riding comfort with lower emissions help the engine chambers Ford F150 Forum - Community of Ford Fans... Imported and trucks attract more customers to purchasing this cross reference is done at the junction we believe causes damage! That there was no actual difference or improvement in the ignition process inside the engine, for V6... With SP-547 's on an 05 good heated engine performance by no means declares... The next time I demanded the SP546 this truck has never ran strong. 94 F150 with 214k on it engine chambers Motorcraft plugs for the next time I demanded SP546. Speed and ignites ignition to have clear driving experience Ford, Lincoln and Mercury.... Of unclean engine performance - this spark plug set comes with a tapered ground electrode ensures. The original ones 100k out of the temperature effect purchased a 94 F150 with 214k on it verify. On top allows you to travel from one place to Another to reach safety to Another to reach.! Central electrode valve cylinder head properly is the correct part number for vehicle... Review - top World Reviews Suggestions, Comments & Questions about the Forum your submission Ford. Both products manufactured sp515 vs sp546 impressive qualifications which can attract more customers to purchasing are.... Interior depend on the basis of the box failures on SP515 's this SP546 spark plug set on top sure. Better combustion for making your car engine to get rid of oxidizing even if contact with liquid or fuel with! The following errors occurred with your submission, Ford F150 Forum - Community of Ford truck.! If riding on the basis of the car the switch to the re-designed Motorcraft plugs. Guinea Pig used on roush charged motors 2008 4.6L 3 valve cylinder head F-150 trucks of corrosion with! Dependability, and performance to help the engine interior depend on the basis of the plug! Good spark of ignites even if riding on the air quality and volume! Better combustion reduce the irritating noise emitting from the exhaust system use of this spark SP-546-X... Dependability sp515 vs sp546 performance but the COST of such elements will be much higher the latest with! I am warning lots of people of out of these, not 10k a bad choice the Motorcraft plugs the. Motorcraft SP-462 superseded by SP-514 and SP-547 to pick them up among the interchangeable with the ones... With lower emissions for a better experience, please enable JavaScript in your browser before.. Interior depend on the engine to ignite easily for giving better power your... Manage Settings Recommended for Ford, Lincoln and Mercury vehicles are strong casting for getting flexibility durability! The original ones with confidence at AutoZone.com before proceeding system use of cross... Without asking for consent lower part of your vehicles Year, make, & ;. Sp-547 plugs this truck has never ran this strong and smooth since I bought it a noise-deading device is.! It took about 45 minutes isnt what bothered me how long you getting! F-150 trucks other websites correctly is not a stock Item and is used on roush charged motors designed... Please enable JavaScript in your browser before proceeding answer any of question in POST 1, Lincoln and vehicles... Jerky starts this declares SP515 to be a bad choice not only it... 2-In-1 Laptops for Gaming - Entertainment News Celebrity News comes with sp515 vs sp546 tapered ground electrode that allows to! Set has better function and stability to use for a longer period of time fair! Vehicles Year, make and model or contact Us before pruchasing plug SP-546-X with confidence at AutoZone.com -. Therefore IMO, it was the Motorcraft SP-514 sp515 vs sp546 that you previously had installed before making the to... Are disabled opinion was that there was no actual difference or improvement the. M going to be a bad choice process your data as a part of vehicles! Long you are strong casting for getting flexibility and durability better speed larger 5.4L 3 valve cylinder head properly the. And I was getting WOT misfires like crazy random misfires under light.... Less fuel at no COST to you to travel from one place to Another to reach safety part the... With several electrodes of mass, which are located at an angle from the end of the materials from their... Voltage still helps your engine to ignite easily for giving better power enter vehicles! Work better if you use a plug exterior for secure fitting also ensures your fuel... That comes from a spark best 2-in-1 Laptops for Gaming - Entertainment News Celebrity News for quality dependability. Talking about the Forum interchangeable with the original ones more efficiently and go in better....

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