MAS 8-Pack Ignition Coils with Straight Boots for Ford 5.4L V8 — OEM Replacement

Eight-coil ignition set engineered for Ford 5.4L V8 engines

MAS presents an eight-pack of ignition coils with straight boots, designed as a direct OEM replacement for the Ford and Lincoln family powered by the 5.4L V8 engine. This kit pairs eight coils with Motorcraft SP546 and SP515 plugs, delivering a cohesive ignition refresh that aims to restore reliable spark delivery across all cylinders.

Real-world fit and ease of installation

These coils are built to match OE mounting points and electrical connections, simplifying the swap for Ford Expedition, F-150, F-250/350 Super Duty, Lincoln Navigator, and Lincoln Mark LT models. The straight boots help with routing in tight engine bays, reducing friction points and streamlining installation.

• Compatibility Verification: Use the year/make/model selector and check interchangeable part numbers to confirm compatibility. If your original coils have brown boots, you will need DG521.
• Direct replacement design: Engineered for a reliable, factory-grade fit with minimal modification.
• Comprehensive kit: Eight ignition coils plus Motorcraft SP546 and SP515 plugs included for a complete ignition system refresh.
• Potential performance benefits: You may notice smoother starts, reduced misfires, steadier idle, and enhanced overall engine response in daily driving or towing scenarios.

Warranty and installation tips

MAS backs this set with a one-year limited warranty for peace of mind. Before installation, verify your exact vehicle application and follow proper torque and connector alignment guidance. The kit’s completeness aims to reduce the need for extra sourcing.

In everyday driving, a fresh ignition coil set can support consistent spark across all cylinders, potentially improving driveability during takeoff, acceleration, and highway merging. For drivers who tow or haul loads, stable ignition may contribute to predictable power delivery and smoother engine response when climbing grades. Quality components and a paired spark plug set offer a cohesive upgrade path, with MAS emphasizing compatibility and finish to match Ford and Lincoln 5.4L V8 engineering. Results vary by vehicle condition and drivetrain, but many customers report a more confident start and steadier engine performance after installation.

Maintenance notes: If your vehicle previously showed symptoms such as rough idle or crank hesitation, this kit offers a straightforward replacement that could support consistent ignition behavior and easier diagnostics in future maintenance.