CarBole DG508 Ignition Coil Pack 8‑Piece Curved Boot for Ford 4.6L/5.4L/6.8L V8/V10 — OE Fit, High-Resistance Durable Coils

The CarBole DG508 ignition coil pack is a set of eight curved-boot replacement coils engineered to restore consistent spark and reduce misfires on compatible Ford, Lincoln and Mercury 4.6L–6.8L V8/V10 engines.

If your truck or van with a 4.6L, 5.4L or 6.8L engine is showing rough idle, hesitation or multiple misfire codes, worn or failing ignition coils are a common cause. The CarBole DG508 kit supplies eight high-resistance coils with curved boots that match OE-style fitment for many pre-2004 Ford E- and F-series vehicles and select Lincoln/Mercury models. These coils are corrosion-resistant, abrasion-resistant and built to tolerate high temperatures and electrical load typical of heavy-duty use.

Will these coils fit my Ford or Lincoln engine?

The DG508 kit fits a range of 4.6L, 5.4L and 6.8L V8/V10 engines used in Ford E150/E250/E550 and F150/F250/F550 models as well as compatible Lincoln and Mercury vehicles—except certain 2004-and-newer F150 5.4L applications where straight boots are required. Verify part numbers or compare the curved boot profile to your original coil before purchase.

• Fits engines: 4.6L, 5.4L, 6.8L V8/V10 (selected models)
• Common vehicle fits: Ford E150/E250/E550, F150/F250/F550
• Not compatible with 2004+ F150 5.4L that require straight boots
• Cross-references included for quick verification (DG508, DG491, DG472, F523, etc.)

How do these curved-boot coils improve performance?

CarBole coils are designed with high-grade materials and electrical resistance to provide a strong, consistent spark, which helps reduce cylinder misfires and driveability issues. The curved boot improves fit in tight engine bays where angled access to the spark plug is needed, enabling a secure connection and better long-term reliability.

• High electrical resistance for consistent spark delivery
• Curved boots for correct seating in angled spark plug wells
• Durable materials resist corrosion and abrasion under heat
• Eight-coil pack replaces all coils at once to avoid mixed old/new performance

Is installation difficult and what comes in the box?

Installation is straightforward for anyone comfortable with basic engine work: unplug the electrical connector, unfasten the mounting bolt, and swap the old coil for the CarBole unit. The kit contains eight curved DG508 coils so you can replace all cylinders at once and eliminate intermittent problems caused by a single failing coil.

• Package includes: 8 x curved DG508 ignition coils
• Simple bolt-and-connector installation—no special tools required beyond basic hand tools
• Replace coils on a cool engine for safety and easier access
• Cross-reference list included to confirm compatibility before installation

What durability and quality features should I expect?

These coils use upgraded materials to endure thermal cycling and electrical stress commonly encountered in truck and fleet duty. The construction emphasizes corrosion and abrasion resistance to prolong service life compared with lower-grade aftermarket coils.

• High-grade polymer and metal components resist heat and wear
• Designed for strong spark output under heavy load
• Resistant to moisture and corrosion for longer life
• Manufactured to match common OE dimensions and electrical characteristics

Who is this for: The CarBole DG508 ignition coil pack is intended for owners, technicians and fleet managers who need a full set of curved-boot replacement coils for older Ford E-series and F-series trucks, plus compatible Lincoln and Mercury models. It’s especially appropriate when diagnosing recurring misfires, restoring consistent ignition across all cylinders, or performing preventive maintenance on high-mileage engines where OEM coils have degraded.