DG508 Ignition Coil Pack Set of 8 Compatible for Ford V8 - Curved Boot

In this review of the DG508 Ignition Coil Pack set of 8, the bottom line is simple: it is for owners of older Ford, Lincoln and Mercury V8s who need a cost-effective replacement to restore smooth idle and consistent spark delivery. The reviewer found these coils most valuable for 2000-2009 F150 4.6L and 1997-2003 F150 5.4L engines when the original curved-boot coils fail. Buyers should check fitment carefully before purchase, because the coils use auto curved boots and a 2-blade terminal design that does not fit some 2004+ 5.4L F150s.

Key Features

• Direct Fit Curved Boot: The curved rubber boot matches many Ford, Lincoln and Mercury models so installation can follow the original coil orientation.
• 2-Blade Terminals: The coils use a two blade prong electrical connection which aligns with compatible factory harnesses for a straightforward swap.
• High-Voltage Conversion: Each coil converts low battery voltage to high-voltage spark to improve combustion efficiency and reduce misfire under normal conditions.
• Set of Eight: Shipping a full set of eight coils lets owners replace all banks at once to ensure uniform performance across cylinders.
• Improved Idle and Combustion: In practice these coils can cure rough idling and restore smooth throttle response when fitment and installation are correct.

Who It's For

This product is aimed at drivers of older Ford V8 models who have confirmed their engine uses curved-boot ignition coils and the 2-blade terminal layout. It is a practical option for DIY mechanics and independent shops who want a complete eight-coil replacement to address misfires, rough idle, or degraded spark without replacing other ignition components.

It is not for owners of 2004 and newer F150 trucks equipped with the 5.4L V8 that require a different coil design (DG511 or equivalent), nor for vehicles with straight boot coils or non-standard electrical connectors. Confirm your original coil shape and terminal type before buying.

Pros & Cons

Pros

• Good value for money when replacing all eight coils together, reducing long-term service cost.
• Many buyers report improved engine idle and reduced misfire after installation.
• Straightforward to install for those familiar with ignition service thanks to the matching curved boot shape and 2-blade terminals.

Cons

• Fitment is mixed across users; some report incompatibility when vehicle coil shape or connector differs.
• There are occasional durability reports of early failure, so longevity may vary by vehicle and usage.

Specifications

Our Verdict

The DG508 eight-coil kit is a practical, budget-friendly replacement for owners of compatible Ford, Lincoln and Mercury V8s who need to restore reliable spark and smooth idle. It delivers tangible improvements when the curved-boot design and 2-blade terminals match the vehicle, but buyers must verify fitment carefully because compatibility is not universal and some users reported early failures.

Frequently Asked Questions

Will these coils fit my 2005 F150 5.4L?
No. The DG508 does not fit 2004 and newer F150 trucks with the 5.4L V8; those vehicles typically require a different coil design.

Do these coils use the same connector as factory coils?
They use a 2-blade prong terminal layout; confirm your original coil has the same connector before ordering.

Should I replace all eight coils at once?
Replacing all eight ensures uniform performance and avoids repeated labor if other coils fail later, and this kit supplies a full set.