Product Details 🔹 Product Overview This complete replacement kit includes 8 DG508 direct ignition coils and 8 iridium spark plugs, engineered as a direct OEM fit for compatible Ford, Mercury, Lincoln and VPG vehicles equipped with 4.6L / 5.4L V8 SOHC engines. Matching OEM part numbers DG508, SP493, SP479 and cross-referenced interchange part numbers ensure seamless plug-and-play installation without modifications. 🔹 OEM Interchange Part Numbers Ignition Coil OEM Cross Reference: DG508, DG481, DG491, E213, E262, E409, F5235, 21761, FD-493, FD-503, FD507, IC369, IC62, 5C1412, 88921369, F7TU12029BA, F7TU12A366AB, F7TZ12029CC, F7TZ12029AB, F7TZ12029CA, 1L2U12029AA, 1L2Z12029AA, 1L5Z12029AA, 3W7E12A366AA, 3W7Z12029AA Spark Plug OEM Cross Reference: SP493, SP479 🔹 Compatible Vehicle List 🚗 Ford Vehicles E-150 1997-2014 (5.4L V8) E-150 2000–2014 (4.6L V8) E-250 1997-2014 (5.4L V8) E-250 2003–2014 (4.6L V8) E-350 1997-2015 (5.4L V8) E-450 2000-2004 (5.4L V8) E-450 2006-2015 (5.4L V8) Expedition 1997–2004 (5.4L V8) Expedition 2000–2004 (4.6L V8) Crown Victoria (Gas) 1998–2005 (4.6L V8) Crown Victoria 2006–2011 (4.6L V8) F-150 1997-2003 (5.4L V8) F-150 2000-2007 (5.4L V8) F-150 2008-2010 (16 Valve 4.6L V8) F-150 Heritage 2004 (4.6L V8 / 5.4L V8) F-250 1997–1999 (5.4L V8) F-250 Super Duty 1999–2004 (5.4L V8) F-350 Super Duty 1999–2004 (5.4L V8) Mustang 1999 2001 2003 2004 (4.6L V8 SOHC) Mustang 2000 (4.6L V8 / 5.4L V8) Mustang 2002 (4.6L V8) Econoline Super Duty 1997-1999 (5.4L V8) Explorer 2002–2005 (4.6L V8) Excursion 2000–2005 (5.4L V8) 🚗 Mercury Vehicles Grand Marquis 1998–2011 (4.6L V8) Mountaineer 2002–2005 (4.6L V8) 🚗 Lincoln Vehicles Town Car 1998–2005 (4.6L V8) Navigator 1998 (5.4L V8) Navigator 1999 (5.4L V8 SOHC) 🚗 VPG Vehicles MV-1 2011–2012 (4.6L V8) 🔹 Ignition Coil (DG508) Construction & Specs • 2-Pin Rectangular Female Blade Connector: Matches factory wiring harness for error-free connection; avoids loose contact and intermittent spark failure. • Integrated Mounting Hole: Bolt-on design aligns perfectly with original engine mounting positions for quick installation. • High-Temp Silicone Curved Boot: Distinct curved boot design (unique to DG508, differentiates from straight-boot DG521 / DG511) resists cracking, oil leakage and heat aging. • Full Epoxy Resin Housing: Blocks voltage leakage, insulates internal components and withstands extreme engine bay temperatures. 🔹 Official Specifications 1. Coil Type: Electronic Direct Ignition Coil 2. Terminal Type: Blade 3. Mount Style: Bolt-On 4. Connector Gender: Female 5. Terminal Count: 2 6. Connector Shape: Rectangular 🔹 Iridium Spark Plug Premium Features Isostatic Ceramic Insulators: Minimizes voltage drop to maintain steady spark delivery under heavy load. Ultra-Precision Factory Spark Gap: Pre-set gap eliminates manual adjustment, maximizes ignition efficiency and component lifespan. Stable Terminal Screw Cap: Stabilizes voltage transfer, reduces random misfires and sustains consistent engine performance. Debris-Free Precision Threads: Smooth machined threads prevent cross-threading during installation, creating tight, leak-free sealing. 🔹 Simple 5-Step Installation Guide 1. Disconnect vehicle battery and remove engine cover 2. Use standard wrench to loosen ignition coil mounting bolt 3. Unplug wiring harness connector and pull out old ignition coil 4. Install new DG508 coil and tighten mounting screw securely 5. Reconnect power plug, reattach engine cover and reconnect battery ⚠️Important Pre-Purchase Reminder This kit only fits vehicles requiring the curved boot DG508 ignition coil. DO NOT purchase if your factory coil is straight-boot DG521 or DG511. Visually compare your original ignition coil shape and match OEM part numbers before ordering—similar-looking coils are not interchangeable. 🔹 Package Includes: 8 x DG508 Direct Ignition Coils 8 x Iridium Spark Plugs