ultramindz Ignition Coil & Spark Plug Kit for Ford 4.6L/5.4L V8 — 8 Coils + 8 Plugs, OEM Fit for 2008–2014 Models

Complete ignition coil and spark plug replacement kit engineered for Ford 4.6L and 5.4L V8 engines found in F‑Series, Expedition, Explorer, Mustang, Lincoln Navigator and Mercury Mountaineer models from 2008–2014.

This ultramindz kit supplies eight ignition coils and eight spark plugs matched to the OEM reference numbers listed for common Ford V8 applications. It’s sized and specified to replace factory DG521/FD509 coils and SP509 spark plugs (also referenced by 8L3Z12029A, 8L3E12A366AA, HJFS‑24FP variants). The set simplifies a full-bank service when engines show rough idle, misfires, or reduced responsiveness due to aging ignition components. Before ordering, double-check coil boot color and your vehicle year to confirm the correct fit.

Which models and years does this kit support?

This replacement set covers multiple Ford brands using 4.6L and 5.4L V8 engines built in the late 2000s and early 2010s. It lists vehicles and model years that commonly share the same coil and plug spec, making it straightforward to service entire ignition banks without mixing part types.

• Ford F‑150: 4.6L (2009–2010), 5.4L (2008–2010)
• Ford Super Duty F‑250 / F‑350: 5.4L (2008–2010)
• Ford Expedition: 5.4L (2009–2014)
• Ford Explorer / Sport Trac: 4.6L (2008–2010)
• Ford Mustang GT: 4.6L (2008–2010)
• Lincoln Navigator: 5.4L (2008–2014)
• Mercury Mountaineer: 4.6L (2008–2010)

How do I verify compatibility with my vehicle before buying?

Confirm engine displacement and production year, then compare OEM reference numbers on your existing coils and spark plugs. Pay attention to coil boot color—some 2008 vehicles use brown boots, which this kit supports if present.

• Match OEM part numbers: DG521, FD509, 8L3Z12029A, 8L3E12A366AA for coils
• Match spark plug references: SP509, SP509X, HJFS‑24FP series
• Inspect coil boot color—brown boots fit specific 2008 builds

What’s included and what should I expect during installation?

The package contains eight ignition coils plus eight spark plugs, enough for a full V8 bank service. Installation typically requires standard hand tools and mechanical experience; if you’re not comfortable, entrust the work to a qualified technician to avoid improper fitting or engine damage.

• Contents: 8 ignition coils (replaces DG521/FD509) and 8 SP509 spark plugs
• Tools: basic ratchet set, torque wrench, dielectric grease recommended
• Recommendation: professional installation advised for correct torque and routing

What performance or maintenance benefits will I notice?

Replacing worn coils and plugs restores consistent spark delivery across cylinders, which helps stabilize idle, reduce misfires, and support efficient combustion. While not a performance upgrade, fresh ignition components reduce carbon buildup and help the engine run closer to factory expectations.

• More consistent cylinder firing and fewer misfires
• Smoother idle and improved throttle response
• Simple full-bank replacement removes mixed-age components

Who is this for: This ultramindz kit is aimed at owners and mechanics servicing late‑2000s to early‑2010s Ford V8 trucks and SUVs who want a matched set of coils and plugs for a full-bank replacement. It’s ideal when diagnosing repeated misfires, planning scheduled replacement, or restoring ignition reliability on F‑Series, Expedition, Explorer, Mustang GT, Lincoln Navigator, and Mercury Mountaineer vehicles that match the listed engine sizes and years. Always reconfirm OEM references and consider professional installation if unsure about fitment or torque specifications.