Marsram Ignition Coil Pack & Spark Plug Kit for Ford F-150 1998–2003 — 8-Coil/8-Plug Direct-Fit, Restores Ignition

Marsram's DG508 ignition coil pack set with matching spark plugs is a direct-fit replacement designed to restore reliable ignition for 1998–2003 Ford F-150 5.4L V8 and many related Ford/Lincoln/Mercury models.

If your V8 is misfiring, rough at idle, or showing reduced throttle response due to worn coils or fouled plugs, this complete 8-coil and 8-plug kit is built to match factory mount points and electrical connectors for a straightforward swap. The kit replaces several OEM part numbers including DG-508 and DG-472 and ships with a worry-free aftermarket 1-year warranty and customer support.

How do these coils and plugs improve engine performance?

Up-to-spec ignition components help deliver consistent spark timing and strength, which supports smoother idle, crisper throttle response, and fewer misfires. Replacing all eight coils and plugs at once prevents uneven wear across cylinders and simplifies troubleshooting.

• Full eight-coil, eight-plug kit for balanced ignition across all cylinders
• Direct electrical and mounting compatibility with listed Ford models
• Designed to reduce misfires and restore consistent combustion
• Includes common OEM replacement numbers for easier cross-referencing

Will this set fit my truck or SUV?

Compatibility covers a wide range of Ford, Lincoln, and Mercury vehicles with 4.6L and 5.4L V8 engines from the late 1990s through the 2000s. Always confirm your exact year, model, and engine code against the fitment list before purchase to ensure a match.

• Fits 1998–2003 Ford F-150 5.4L V8 and many F-250/F-350 Super Duty models
• Compatible with numerous Crown Victoria, E-Series, Expedition, Explorer, Mustang, Lincoln Town Car, and Mercury applications
• Replaces OEM part numbers like DG-508, DG-472, 3W7Z12029AA for cross-checking
• Check the vehicle fit tool or engine code to verify fit before ordering

How difficult is installation and what tools are needed?

Installation is typically straightforward for anyone with basic mechanical skills and standard hand tools. You’ll remove the old coil packs and spark plugs, inspect the wells, and fit the new components using OEM torque specs where possible.

• Basic hand tools: ratchet, spark plug socket, torque wrench recommended
• No special programming or reflash required after installation
• Replace all eight coils and plugs together to avoid repeat labor
• Inspect ignition boots and wiring harness for damage during swap

What does the warranty cover and how do I get support?

This aftermarket kit includes a 1-year warranty that covers defects in materials and workmanship; routine wear or damage from improper installation are typically excluded. For any issues, contact Marsram customer support promptly for assistance and warranty processing.

• One-year aftermarket warranty included with purchase
• Contact Marsram customer service for claims or troubleshooting
• Package contains 8 coils and 8 spark plugs for a complete service job
• Keep proof of purchase and vehicle details handy when seeking support

Who is this for: This kit is intended for owners and mechanics who need a complete ignition overhaul for late-1990s to mid-2000s Ford/Lincoln/Mercury V8 engines—especially F-150 owners with the 5.4L V8 who want a direct-fit replacement pack of coils and plugs to eliminate misfires and restore consistent running without sourcing individual parts.