Marsram Ignition Coil Pack DG508 for Ford F150 1998-2003 Black Curved-Boot V8 — Copper Windings, Heat-Resistant Housing

The Marsram DG508 ignition coil pack is a direct-fit replacement for select Ford, Lincoln and Mercury V8 engines and is designed to restore reliable spark delivery when the original coil fails.

This high-voltage coil pack from Marsram replaces worn or damaged ignition coils on many Ford platforms from the late 1990s through the 2010s. Built with a high-conductivity copper winding and a reinforced epoxy-and-engineering-plastic housing, the DG508 is engineered to resist heat and deliver consistent spark performance. Before installation, confirm your vehicle uses the black curved-boot style coil, as this DG508 variant is not compatible with brown or straight-boot coil types.

Will this coil pack fit my 1998–2003 Ford F150?

Yes—when your truck uses the specific black curved boot coil design. The DG508 covers multiple years and engine sizes across Ford trucks and vans, but fitment depends on the boot shape and connector style rather than just model year.

• Compatible with 1997–2003 F150 5.4L and 1998–2010 F150 4.6L V8 engines when black curved boots are present.
• Also fits many Crown Victoria, Explorer, E-Series, Excursion, Econoline, and Super Duty applications listed by Marsram.
• Not compatible with brown straight boots or black straight boots—inspect the original coil before ordering.

How does the DG508 differ from OEM or other aftermarket coils?

The DG508 emphasizes thermal resistance and electrical conductivity using epoxy resin housing and copper internal windings. That construction helps reduce heat-related failures and supports consistent spark energy across cylinders, but it is still a direct-replacement aftermarket part rather than an OEM-branded unit.

• Exterior: epoxy resin plus high-strength engineering plastic for heat resistance and durability.
• Interior: high-conductivity copper coil to promote fast, reliable ignition response.
• Replaces many factory part numbers (e.g., DG-508, SP479, FD503, GN10164) for straightforward swap-in service.

What benefits can I expect after replacing a failing coil with the Marsram DG508?

Installing a properly matched DG508 can eliminate misfires, rough idle, and poor throttle response caused by weak or open coils. While it restores the ignition circuit, overall engine performance also depends on spark plugs, wiring, and fuel/air systems being in good condition.

• Improved ignition consistency for smoother idle and acceleration when the coil was the fault.
• Durable materials help reduce repeat coil failures from heat exposure.
• Sold with a 1-year warranty to help protect against early defects.

How do I confirm compatibility before buying?

Match the physical appearance and boot style of your current coil to the DG508 description and cross-check vehicle fitment lists. When in doubt, compare part numbers or contact Marsram with your VIN for confirmation.

• Confirm the coil has black curved boots—this DG508 only fits that configuration.
• Verify the vehicle model, year, and engine size against the compatibility list provided by the brand.
• Use the parts finder or contact Marsram support with your VIN for an exact match.

Who is this for? The Marsram DG508 is aimed at Ford, Lincoln and Mercury owners, fleet managers, and independent mechanics who need an affordable, durable replacement ignition coil for V8 engines from the late 1990s to mid-2010s. It’s a practical option when the original coil shows misfire codes or visible signs of damage—provided the vehicle uses the black curved-boot coil style. If you aren’t sure about boot shape or part numbers, verify fitment before purchase to ensure a correct, trouble-free swap.