BDFHYK 8PCS Ignition Coil Pack DG508 for 1997-2010 Ford F-150 F-250 Explorer Expedition 5.4L V8

DG508 8-Pack Ignition Coil Set for Listed Ford, Lincoln, and Mercury Applications

BDFHYK DG508 ignition coils are OE-style aftermarket coil-on-plug replacement parts for listed Ford, Lincoln, and Mercury service groups using a matching DG508-style coil design. This 8-piece set is built for owners who are dealing with high-mileage ignition maintenance, cylinder misfire symptoms, rough idle, hesitation under load, or uneven startup behavior. Before ordering, match the year, model, engine, OE reference, connector shape, mounting point, coil body, and boot length with the original coil.

Scenario-Based Solutions

Rough Idle or Shaky Cold Start

If the engine starts but shakes at idle, feels uneven at stoplights, or shows a cylinder-specific misfire code, a weak ignition coil may be part of the problem. Replacing aged DG508-style coils can help support more consistent spark delivery after the spark plugs, connectors, and wiring have been checked.

Hesitation When Accelerating, Towing, or Climbing Hills

Older Ford truck and SUV engines may feel acceptable at light throttle but hesitate when the engine is under load. A weak coil can show up more clearly during towing, uphill driving, passing, or highway merging. This full 8-piece set is useful when you want to refresh the coil-on-plug system across all cylinders instead of replacing only one coil at a time.

High-Mileage Ignition Maintenance

When one original coil has failed, the remaining coils may be the same age and exposed to the same heat cycles. Replacing all 8 coils during the same service can make maintenance more consistent across the engine bank, especially on older F-150, Expedition, Explorer, Mustang, Crown Victoria, Navigator, and Grand Marquis service groups listed below.

Heat, Moisture, and Worn Boot Concerns

Ignition coils work in a hot engine bay and may be affected by worn boots, loose connectors, oil around the plug well, moisture, or damaged wiring. During installation, inspect the spark plugs, coil boots, connectors, and mounting area so the new coils are not stressed by an unresolved issue.

Vehicle Fitment

Necessary Product Parameters

• Part type: ignition coil pack / coil-on-plug replacement.
• Quantity: 8 ignition coil packs.
• Primary reference: DG508.
• Other references: DG481, DG491, E213, E262, E409, F523, 521761, 88921369, 1L2U12029AA, 1L2Z12029AA, 1L5Z12029AA, 3W7E12A366AA, 3W7Z12029AA, 5C1412, FD-493, FD-503, FD507, IC369, IC62, F7TU12029BA, F7TU12A366AB, F7TZ12029AB, F7TZ12029CA, F7TZ12029CC.
• Replacement style: OE-style aftermarket replacement part, not a factory-branded Ford, Lincoln, or Mercury part.
• Included parts: ignition coils only; spark plugs are not included.

What to Check Before Ordering

• Confirm the year, make, model, trim, and engine before purchase.
• Compare the OE or reference number on the old coil when available.
• Match the connector shape, mounting location, coil body, and boot length.
• Read misfire codes such as P0301-P0308 when the check engine light is on.
• Inspect spark plugs first. Worn plugs can overwork new coils, and similar symptoms can also come from fuel delivery, wiring, vacuum leaks, sensors, or engine mechanical problems.