MSD 8243 Blaster Direct Ignition Coil Ford 4.6L 5.4L 3-Valve V8 Red

The MSD 8243 Blaster Ignition Coil is a direct-fit, high-performance coil-on-plug replacement engineered specifically for Ford 4.6L and 5.4L 3-valve V8 engines (2005–2009). Designed to drop in without modification, it plugs directly into the factory wiring harness connectors for a hassle-free upgrade over stock ignition components.

MSD's patented winding design uses premium materials to deliver improved spark energy and higher voltage output compared to the OEM coil. The result is a more complete combustion event, which translates to better throttle response, improved idle quality, and optimized engine efficiency. The bright red housing makes identification easy in a crowded engine bay.

Key Features:

• Direct bolt-in replacement — plugs into factory connectors with no wiring modifications required
• Patented winding design using high-grade materials for increased durability and output
• Higher spark energy and voltage for more complete combustion versus OEM coils
• Fits 2005–2009 Ford 4.6L and 5.4L 3-valve V8 engines
• Red housing for easy under-hood identification
• Sold individually — one coil per package

The MSD 8243 is an ideal upgrade for Ford Mustang GT, F-150, and Expedition owners looking to restore or improve ignition performance in their 3-valve modular V8 engines. MSD's Blaster coil series is a trusted name in performance ignition, backed by decades of motorsport engineering.