It as well makes sure your car to avoid jerky starts. Well, you may think it's a "bear", but you only have to do it once every 100K miles. No wonder of this spark plug goodness as it allows your engine to stay heated to go longer by spending less fuel. Consider some really interesting solutions, which should be given preference in cases where you are not too limited in the choice. 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. It on top makes sure good resistance against corrosion or rust to last longer. $39.95. Reboot. It on top makes sure you are getting fine engine working with no snag of metal marks. We no longer carry SP515. It features extensive laboratory that improves your truck engine performance. Did a search here and google, but I can't seem to find the answer to what is the difference between these Motorcraft plugs. It on top makes sure you are getting a higher melting point to perform fine while riding on the street. I have noticed that sp515's have a heavy blue weld on the junction that used to break off maybe this is another Fix??? It ignites a mixture of air and fuel that comes from a spark. Motorcraft stands for quality, dependability, and performance. Mar 5, 2022 11:59 AM EST. For a better experience, please enable JavaScript in your browser before proceeding. 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 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. It as well as makes sure to eliminate the risk of unclean engine performance. Show details This item: Motorcraft SP-515 Spark Plug PZH14F - Superseded To SP546 $12.69 Motorcraft DG511 Ignition Coil $31.54 They're designed for the larger 5.4L 3 valve cylinder head F-150 trucks. The SP-507's broke .. replaced by the SP-515's.. never heard of the SP-546. Selection of these elements should be based solely on the recommendations of the manufacturer of the particular vehicle. Said it also came at same time as per unit price increase. is there a lifespan difference between the two? 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. 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. Since I am warning lots of people of out of the box failures on sp515's . Structurally, this element consists of the main electrode, which, like a rod, goes through its center. With the 14mm thread size, the spark plug set allows your engine to get rid of fuel extra spending to drive well. They're designed for the larger 5.4L 3 valve cylinder head F-150 trucks. This Item: [SP-546X (PZK14F)]Motorcraft Spark plugs (replaces SP515) $11.75. there is a lot of fine-tuning with spark plugs and specific vehicles today. Advertising - Replaces PZT14F PZT1F PZT2F PZT2FF4 SP421 SP462 SP507 SP515. 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. Here between the main and side electrodes from the voltage supply there is a spark, which ignites the fuel mixture in the engine cylinder. 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_ad_type = "smart"; Aftermarket Products, Reviews & Installation, Suggestions, Comments & Questions about the Forum. Qty: 1 = Full set of 8 Spark Plugs This is a set of 8 OEM Motorcraft SP546 spark plugs for your vehicle. This spark plug set has better function and stability to makes sure your car engine to idle smoothly. SP 515 one is not a stock item and is used on roush charged motors. Sounds like I should get these outta here soon, SP546 replaced SP515 almost a year ago. 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 To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. It ignites a mixture of air and fuel that comes from a spark. This spark plug set on top makes sure no snag of function exceptionality to use for a longer period of time. I have a short 94w box with an extended 2wd cab with 5.8 in it. Sp546X vs sp546 spark plugs ( 5.4 3v plug motorcraft ) What are the "alleged" differences between sp546X vs. plain sp546, why the new model? 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. 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. What did you do to your truck today? And, the welded tip allows your engine to get a good spark of ignites even if riding on the critical road. In the classic version there is one, but there are versions with two, three and even four side electrodes. Amazon and Ebay vendors may still be selling old stock (or old counterfeit stock. So, you need to be careful enough with picking the right tire for your car. All variants are good, if it was chosen correctly. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. That kind of heat near porcelain can break it . Anyone here with actual experience using them that can compare difference between each model used in same engine/truck? 2008_XL on 03-23-2016 07-30-2019 08:43 PM by Justin C 2 4,660 Preventing the cam phaser issue? Manage Settings Manage Preferences - There are 2 replacement spark plugs for Motorcraft SP515. 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 . 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. Thanks for replying. It on top makes sure you are getting iridium fine wire that makes sure no snag of fouling. Why Platinum? amzn_assoc_linkid = "fe28ea19bc751f9872df98ab0d3a1965". Replacing F150 Headlights Replacing headlights is a common thing in car services. This is a single SP-515 PHZ-14F spark plug. It is up to you to verify this is the correct part number for your vehicle. This spark plug set comes with a nickel-plated shell with rolled threads that make sure you are getting no snag of rust or seize. SP546 replaced SP515 almost a year ago. (Read all notes & compare with your vehicle) amzn_assoc_ad_type = "smart"; It also allows your truck to easily fit with no trouble of loose fit. A single one installed in the engine cylinder must produce this spark between 500 and 3500 times per minute. amzn_assoc_asins = "B0723BVWF9"; amzn_assoc_ad_mode = "manual"; This spark plug set also ensures higher gas mileage on the roadside. But when you are out for buying a spark plug, then theres a need to make a choice for one. A single one installed in the engine cylinder must produce this spark between 500 and 3500 times per minute. Title: Spark Plug Service Part Number to Motorcraft Number conversion table Author: Boss, Robert (R.T.) Created Date: Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! Manufacturers strive to create the most efficient and durable headlights, which will replace the old front lighting units. 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 . The number in a car depends on the number of pistons, in an ordinary car there are 4 pistons and, accordingly, 4 spark plugs (the more powerful the car, the more cylinders and spark plugs there are). It on top has a thin layer that allows you to get easier feed. 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 using in the latest truck with no trouble. Simply because its capable of providing you an extensive service overall with a robust construction benefit to last longer. Its a pretty common thing. And, it makes sure your car is easily getting better acceleration and braking reaction to have the combustion process in your engine. 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. 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. This ground electrode seat style also helps to generate heat with no snag of fiction and damages. If you want to restore the original performance of your vehicle's ignition system, this product is what you need. Usually, the cheapest ones are made of nickel alloy. And to mention their effort for enhancing fuel efficiency. Spark Plug SP-515 PZH14F Motorcraft. 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. The SP514 plugs were superceded by the SP547 for 3V GTs built up to the end of Nov 2007. However, SP 509 is still a valid number. Shop for Motorcraft Platinum Spark Plug SP-546-X with confidence at AutoZone.com. 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