Ignition Coil Pack DG508 & Spark Plug Kit for Ford 5.4L V8 - Complete

In this review the Ignition Coil Pack DG508 & Spark Plug Kit is evaluated as a direct replacement set for Ford 5.4L V8 engines from the late 1990s into the mid 2000s. The bottom line: this kit is for owners who need a full ignition refresh - eight coil packs and eight spark plugs supplied together - and who drive supported models such as F150 (1998-2003 and Heritage 2004), Expedition, E-Series, Super Duty and Excursion. It is best valued when you want matched parts that replace OEM references like DG508 and SP479 and prefer to replace the entire set at once to restore consistent ignition performance.

Key Features

• Complete kit: Supplies eight ignition coil packs and eight spark plugs so every cylinder receives a new ignition component in one service.
• OEM cross-reference: Replaces factory part numbers including DG508, FD504 and multiple Ford OEM refs for direct-fit compatibility on listed models.
• Wide model coverage: Fits a long list of Ford vehicles with the 5.4L V8 from 1997 to 2008 in many applications, simplifying parts sourcing.
• Matched components: Providing coils and plugs together helps restore even firing and reduces troubleshooting time compared with mixed-age parts.
• Installer advice: The listing clearly recommends professional installation, which helps preserve warranty and avoid installation damage.

Who It's For

This kit is most useful for mechanics and DIY owners who are servicing Ford vehicles with the 5.4L V8 engines listed, and who prefer a full-bank replacement to avoid mismatched ignition parts. It is especially appropriate for trucks and vans showing misfires, rough idle, or aging coils and plugs across multiple cylinders.

It is not for owners of 2004+ F-150 5.4L engines that use DG511 coils, or for natural gas E350 applications; buyers should verify their OEM coil reference before ordering. Those who need a single coil rather than a full eight-pack should shop for single-unit replacements instead.

Pros & Cons

Pros

• Complete set simplifies maintenance by replacing all eight coils and plugs at once.
• Includes cross-referenced OEM part numbers to aid fitment checks against factory service parts.
• Reduces diagnostic time by ensuring all ignition components are new and matched.

Cons

• Does not fit 2004+ F-150 5.4L models that require DG511 coils, so fitment must be confirmed.
• Installation may require a professional mechanic for best results and to avoid damage.

Specifications

Our Verdict

The Ignition Coil Pack DG508 & Spark Plug Kit is a practical, cost-effective solution for Ford owners needing a full ignition system refresh on supported 5.4L models. It delivers clear value when replacing all eight coils and plugs at once and avoids the common problem of mixed-age components. Confirm engine year and OEM coil reference before purchase; for compatible vehicles this kit restores consistent spark delivery and simplifies repairs.

Frequently Asked Questions

Will these coils fit a 2005 F-150?
No. The 2004+ F-150 5.4L models use DG511 coils; this DG508 kit is not compatible with those years.

Does the kit include spark plugs?
Yes. The package includes eight spark plugs (reference SP479) alongside eight ignition coil packs.

Should I install these myself?
Installation is recommended to be done by a qualified mechanic to avoid damage and ensure correct installation.