BDFHYK DG521 ignition coil packs are OE-style aftermarket replacement parts for listed Ford, Lincoln, and Mercury service groups using a matching DG521-style coil design. Before ordering, confirm the exact year, model, engine, connector shape, coil body, mounting points, coil length, and OE reference against the original ignition coil.
| Make | Model / Years | Fitment Notes |
|---|---|---|
| Ford | Expedition 2008-2009; Explorer Sport Trac 2008-2009; Mustang 2008-2009; F-150 2008-2010 | Listed Ford service groups using matching DG521-style coil design |
| Ford Super Duty | F-250 / F-350 / F-450 / F-550 Super Duty 2008-2010 | Confirm exact engine, connector, and coil style |
| Lincoln | Mark LT 2009-2014; Navigator 2009-2014 | Listed Lincoln service groups; compare OE reference |
| Mercury | Mountaineer 2008-2010 | Listed service group using matching DG521-style coil design |
A weak ignition coil may contribute to hard starting, rough idle, hesitation, weak acceleration, reduced fuel economy, misfire symptoms, or a check engine light. Similar symptoms can also come from worn spark plugs, wiring problems, fuel delivery faults, intake leaks, sensors, or engine mechanical condition.
Install on a cool engine. Inspect the spark plugs, coil boots, wiring connectors, and mounting area before installation. BDFHYK ignition coils are OE-style aftermarket replacement parts, not factory-branded Ford, Lincoln, or Mercury parts.
BDFHYK 8PCS Ignition Coil Pack DG521 for Ford F-150 Expedition Mustang 5.4L
