MAS Curved-Boot Ignition Coil Pack Set — 8-Pack Replacement for Ford 4.6L/5.4L V8, Direct-Fit OE Match

If your V8 is misfiring, running rough, or showing poor throttle response, worn or failing coil packs are often the cause. This MAS kit supplies eight curved-boot ignition coil packs engineered to match OE fitment for numerous 4.6L, 5.4L and 6.8L Ford family engines, including F-150, E-Series, Excursion, Expedition, Mustang, Crown Victoria, Town Car, Navigator, Grand Marquis, and more. Each pack is cross-referenced to common part numbers (DG508, DG473, C1454, FD503, 1L2U-12029-AA, I2LU-12A388-AA) so you can verify compatibility easily.

How will replacing all eight coil packs affect engine performance?

Replacing the full set eliminates variations between new and old units, preventing ongoing misfires and smoothing idle and acceleration. Installing a complete set also reduces diagnostic time and the need for repeated repairs when coils fail progressively.

• Corrects misfires and rough idle across all cylinders
• Improves throttle response and acceleration consistency
• Prevents repeated trips to the shop by renewing the entire ignition bank
• Maintains even spark delivery for smoother engine operation

Which vehicles and engines are compatible with this MAS DG508 curved-boot set?

This kit fits a broad range of Ford, Lincoln, and Mercury V8 models with curved boot ignition configurations. Use the part cross-references and your vehicle year, make, and engine size to confirm fitment before purchasing.

• 4.6L, 5.4L and 6.8L V8 engines across F-150, F-250, F-350, Super Duty trucks and Excursion
• E-Series, E-150/E-250/E-350/E-450 vans and Club Wagon/Econoline variants
• Passenger cars including Crown Victoria, Town Car, Mustang, Grand Marquis, and Navigator
• Cross-referenced part numbers: DG508, DG473, DG481, C1454, FD503, 1L2U-12029-AA, I2LU-12A388-AA

What distinguishes the curved-boot DG508 from straight-boot coil options?

Boot geometry matters because some intake manifold and spark plug access layouts require a curved boot for proper sealing and clearance. MAS DG508 is the curved-boot variant; if your vehicle uses straight boots, choose the DG511 alternative instead.

• Curved boots provide better clearance in tight engine bays
• Designed to match factory sealing angle and plug orientation
• Avoids stress on the ignition tower and spark plug connection
• Check your current coil boots visually to confirm curved or straight style

What comes in the box and what warranty is included?

The shipment includes a complete set of eight MAS curved-boot ignition coil packs designed as a direct replacement for compatible Ford, Lincoln, and Mercury V8 engines. MAS backs the set with a lifetime warranty—register or enter your vehicle details as instructed by the retailer to confirm fitment and warranty eligibility.

• Set of 8 curved-boot ignition coil packs
• Compatible with specified DG and OEM part numbers
• Lifetime warranty coverage from MAS
• Dealer-style packaging and labeled for straightforward installation

Who is this for: This MAS eight-pack is ideal for owners and mechanics replacing multiple failing coils, performing preventative maintenance on high-mileage V8s, or rebuilding an engine where synchronized ignition performance is required. If you drive a Ford, Lincoln, or Mercury with a 4.6L, 5.4L or 6.8L V8 that uses curved ignition boots, this kit delivers direct-fit parts and a warranty designed for long-term reliability. Always verify curved-boot fitment for your application before ordering.