--- product_id: 589834401 title: "Ignition Coils DG521 and Motorcraft SP-509 Spark Plugs compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F-350 F53 4.6L 5.4L 6.8L C1659 DG521 8L3Z-12029-A" brand: "mas" price: "258404CFA" currency: XOF in_stock: true reviews_count: 5 category: "Mas" url: https://www.desertcart.sn/products/589834401-ignition-coils-dg521-and-motorcraft-sp-509-spark-plugs-compatible store_origin: SN region: Senegal --- # High energy output ignition coils Heat-resistant coil boots for durability Direct OE fit for easy bolt-on installation Ignition Coils DG521 and Motorcraft SP-509 Spark Plugs compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F-350 F53 4.6L 5.4L 6.8L C1659 DG521 8L3Z-12029-A **Brand:** mas **Price:** 258404CFA **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your Ford’s power with precision and durability! ## Quick Answers - **What is this?** Ignition Coils DG521 and Motorcraft SP-509 Spark Plugs compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F-350 F53 4.6L 5.4L 6.8L C1659 DG521 8L3Z-12029-A by mas - **How much does it cost?** 258404CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/589834401-ignition-coils-dg521-and-motorcraft-sp-509-spark-plugs-compatible) ## Best For - mas enthusiasts ## Why This Product - Trusted mas brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durability Under Fire:** High-heat resistant coil boots designed to withstand extreme engine temperatures for longer lifespan. - • **Trusted Compatibility:** Fits a wide range of Ford, Lincoln, and Mercury models from 2008-2014, covering your fleet with confidence. - • **Precision Engine Match:** Specifically engineered for Ford 4.6L & 5.4L V8 engines, ensuring peak ignition performance. - • **Plug & Play Installation:** Direct replacement with OEM-style fitment means no modifications—bolt-on ease for busy pros. - • **Complete Ignition Upgrade:** Includes 8 MAS DG521 ignition coils with brown boots plus 8 Motorcraft SP-509 spark plugs for a full system refresh. ## Overview This MAS ignition coil and Motorcraft spark plug set offers a direct OE-style replacement tailored for Ford 4.6L and 5.4L V8 engines. Featuring 8 high-energy ignition coils with heat-resistant brown boots and 8 premium spark plugs, it ensures reliable ignition, enhanced engine performance, and long-lasting durability across multiple Ford, Lincoln, and Mercury models from 2008 to 2014. ## Description This is a set of eight (8) brand new, high quality direct fit OE style Copper Ignition Coils with boots & springs, and eight (8) Motorcraft spark plugs SP-509.IGNITION COILS for V8 4.6L and 5.4L engines in vehicles including, 2008 to 2014 FORD EXPEDITION, 2009 to 2010 EXPLORER, 2009 to 2010 EXPLORER SPORT TRAC, 2009 to 2010 F-150 V8 4.6L, 2008 to 2010 F-150 V8 5.4L, 2008 to 2010 F-250 SUPER DUTY, 2008 to 2010 F-350 SUPER DUTY, 2009 to 2010 MUSTANG, 2008 to 2014 LINCOLN NAVIGATOR, 2009 to 2010 MERCURY MOUNTAINEER FORD, LINCOLN, and MERCURY ownersNew engine style with brown coil boots only.( DG521+SP509)For old engine design with black coil boots.(DQ50101D+SP546)(B071RPF4VR)Compatibility:2008-2014 FORD EXPEDITION V8 5.4L 2009-2010 FORD EXPLORER V8 4.6L 2009-2010 FORD EXPLORER SPORT TRAC V8 4.6L 2009-2010 FORD F-150 V8 4.6L 2008-2010 FORD F-150 V8 5.4L 2008-2010 FORD F-250 SUPER DUTY V8 5.4L 2008-2010 FORD F-350 SUPER DUTY V8 5.4L 2009-2010 FORD MUSTANG V8 4.6L 2008-2014 LINCOLN NAVIGATOR V8 5.4L 2009-2010 MERCURY MOUNTAINEER V8 4.6L Review: Thought coils where motorcraft! That's on me for not reading the info on parts. I would not had purchased if I caught this! Already # 7 coil is having issues less than 1000 miles. China specials.. I will get motorcraft and reinstall. On time delivery !! King auto parts did reach out to resolve the issue, all is good tks for your support. Once again my issue, for not reviewing the parts before ordering. Review: Excellent purchase great value definitely a good experience ## Features - Important Notes: Please check your original coil boots color before purchase. Because the manufactures of the vehicles changed their coils mid-year so your vehicle might need the DG521 (Brown boots) or DG511 (Black boots) Coils depending on what month the vehicle was made in. If you OEM coil is brown boots this is the one you need. If you OEM coil is Black boots, B0743LRJ7L that is the one you need - Direct Replacement: The ignition coils are easy to install, it use the high grade materials, and each coil is design for specific application, high energy output. High heat resistant compound for our ignition coil on plug boot to withstanding heat stress for longer durability - Vehicle Fitment: Replacement for 2009-2014 Ford Expedition, 2008-2010 Ford Explorer, 2008-2010 Ford Explorer Sport Trac, 2008-2010 Ford F150, 2008-2010 F250 Super Duty, 2008-2010 F350 Super Duty, 2008-2010 Ford Mustang, 2008 Lincoln Mark LT, 2008-2014 Lincoln Navigator, 2008-2010 Mercury Mountaineer - Compatible Part Numbers: C1659, DG521, FD-509, 5C1716, 8L3Z-12029-A, C1659, GN10233, 5C1716, E509, 52-2071, IC697, SP509 - Quality and Coverage: MAS Performance Ignition Coils With Motorcraft spark plugs SP509, made of high quality materials with one year limited coverage for your peace of mind - Engine Compatibility: Designed specifically for Ford vehicles with 4.6L and 5.4L V8 engines, ensuring optimal performance and reliable ignition system operation - Complete Set Package: Includes 8 ignition coils with brown boots DG521 and Motorcraft SP-509 spark plugs, providing everything needed for a complete ignition system replacement ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07BX7L9SF | | Best Sellers Rank | #78,741 in Automotive ( See Top 100 in Automotive ) #119 in Car Ignition Coils | | Brand Name | MAS | | Compatible with Vehicle Type | Car, Van | | Connector Gender | Female-to-Male | | Customer Reviews | 4.4 4.4 out of 5 stars (511) | | Installation Type | Bolt-On or Screw-In | | Item Weight | 4 Pounds | | Manufacturer | MAS | | Part Interchange Info | replacement | | UPC | 716253448499 | ## Product Details - **Brand:** MAS - **Connector gender:** Female-to-Male - **Installation type:** Bolt-On or Screw-In - **Item weight:** 4 Pounds - **Vehicle service type:** Car, Van ## Images ![Ignition Coils DG521 and Motorcraft SP-509 Spark Plugs compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F-350 F53 4.6L 5.4L 6.8L C1659 DG521 8L3Z-12029-A - Image 1](https://m.media-amazon.com/images/I/71PyrTbUfxL.jpg) ## Questions & Answers **Q: Is there a warranty?** A: One year limited warranty for replacement only. **Q: What size socket size do i need** A: These require a 7mm socket. be sure to get an extension or a deep well to have room to maneuver. **Q: Are they double platinum ?** A: Yes, for SP509 ,it is Double Platinum spark plug. **Q: Anyone know if these plugs have any issues? I know 5.4 motors were bad. if you had an easy experience replacing olugs or a bad experience please respo** A: They changed head design in mid 2008 So end of 2008 and newer they are fine and no worse than changing plugs on anything else. This is the updated design. Ford noted the new design by using brown coil boots. So you would have to pull one to find out if you have new or old style. Black boots is the 2 piece. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by L***R on 8 November 2025* Thought coils where motorcraft! That's on me for not reading the info on parts. I would not had purchased if I caught this! Already # 7 coil is having issues less than 1000 miles. China specials.. I will get motorcraft and reinstall. On time delivery !! King auto parts did reach out to resolve the issue, all is good tks for your support. Once again my issue, for not reviewing the parts before ordering. ### ⭐⭐⭐⭐⭐ Review *by M***N on 1 March 2026* Excellent purchase great value definitely a good experience ### ⭐ Review *by D***U on 29 December 2023* I gave the MAS Ignition Coil Set a chance to repair some coils that went out on my 2013 Expedition EL because they looked like they would fit and had a healthy 4-star review. The good part of the set is that they're a direct fit for OEM. There are major bad parts about this set though. First, the boots are slightly too large in diameter--while this gives a very good seal in the spark plug well, it makes them difficult to remove. Second, they're lighter and louder than OEM. That may be a non-issue, but you definitely hear the clicking of the coils every time it sparks. Last, the SP-509s are fake. The engraving is etched, not stamped; the numbering is centered on the hex flats instead of near the edge; and the blue printing can be scraped off by a fingernail. The spark plug boxes look legit though--very good job of a fake product. Too bad I didn't realize this until after the return period. What does this do? Well, I assume the parts are failing slowly in the engine, and my usual 15/16 mpg has fallen to 12/13 consistently over 2 months. I think I'm going to take them out and get the real parts before something explodes in my engine. Save your money and get some OEM parts. ## Frequently Bought Together - MAS Set of 8 Ignition Coils Brown boots DG521 and Motorcraft SP-509 Spark Plugs Compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F53 4.6L 5.4L C1659 DG521 - Permatex 22058 Dielectric Tune-Up Grease, 3oz. - High Performance Dielectric Grease Used To Protect Terminals, Spark Plugs, Wiring And Other Electrical Connections Against Salt, Dirt, And Corrosion - LEXIVON 9/16-Inch Spark Plug Swivel Socket, 3/8" Drive x 6" Total Length | Enhanced Magnetic Design with Thin Wall Socket, Cr-v Steel (LX-SSPS9166) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/589834401-ignition-coils-dg521-and-motorcraft-sp-509-spark-plugs-compatible](https://www.desertcart.sn/products/589834401-ignition-coils-dg521-and-motorcraft-sp-509-spark-plugs-compatible) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-04*