Marsram Ignition Coil Pack DG508 for Ford F‑Series & V8s — Black Curved Boot, Direct-Fit Replacement

The Marsram DG508 ignition coil pack is a direct-fit replacement for many Ford, Lincoln and Mercury V8 engines, designed to restore reliable spark delivery for 4.6L, 5.4L and select 6.8L applications.

When a single cylinder misfires or the check engine light points to an ignition circuit, a dedicated replacement coil like the Marsram DG508 gets you back on the road without the cost of dealer-level parts. This coil pack is engineered to match factory mounting points and electrical connections for the specified model years, and uses heat-resistant housing and copper windings to handle common underhood conditions. Before installing, verify the coil boot style: the DG508 fits only the black curved boot configuration, not straight or brown boots.

Which vehicles does this DG508 coil pack fit?

The Marsram DG508 is compatible with a wide set of Ford, Lincoln and Mercury models across multiple years and engine sizes. It covers common trucks, vans and SUVs with 4.6L, 5.4L and some 6.8L V10 engines—check the fitment list carefully to confirm compatibility for your vehicle.

• Covers many F‑Series models (F150, F250, F350) and Excursion model years listed by manufacturer.
• Fits Crown Victoria, Town Car, Grand Marquis and Navigator in specified years.
• Includes numerous Econoline/E‑Series and E‑series Super Duty vehicles and model years.
• Best practice: compare your original coil’s black curved boot shape to ensure correct match.

How do I know this is the right coil for my engine?

Visual confirmation and part number cross-references are the fastest way to confirm fitment. The DG508 replaces many OEM and aftermarket part numbers, but the unique identifier is the black curved ignition boot—if your vehicle uses that style, the DG508 is likely correct.

• Compare the boot shape: DG508 fits only black curved boots—no straight or brown boots.
• Check listed replacement numbers like DG-508, SP479, F523 and others against your old coil.
• Use the parts finder or contact Marsram support if unsure before ordering.

What materials and construction features improve durability?

Marsram designs this coil with thermally stable materials to resist common engine-bay stresses. An epoxy-resin exterior and high-strength engineering plastic case shield internal components, while copper windings promote efficient conductivity for consistent spark generation.

• Heat-resistant epoxy outer shell reduces risk of deformation from high temperatures.
• High-conductivity copper coil windings support quick, reliable ignition response.
• Factory-style terminals and mounting points allow straightforward swap-in replacement.

What warranty and quality checks come with the part?

Marsram subjects its auto parts to testing to minimize defects and backs the DG508 with a one-year warranty. This provides short-term coverage for manufacturing faults; keep installation records and proof of purchase in case you need warranty service.

• One-year limited warranty for manufacturing defects.
• Quality control inspections performed before shipping.
• Customer support and fitment assistance available via the parts finder or contact channels.

Who is this for: The Marsram DG508 coil pack is intended for owners or mechanics replacing a failed ignition coil on Ford F‑Series trucks, Econoline vans, SUVs and related Lincoln/Mercury models within the listed years and engine families who require a cost-effective, plug‑and‑play aftermarket replacement. It’s especially suitable for those who can verify the black curved boot style and want a part built with heat-resistant housing and copper windings for reliable spark delivery.