MSD designed this 82438 Blaster Ignition Coil Set for 2004-2008 Ford SOHC 3-Valve V8 engines. Designed with improved materials and windings, these coils produce a stronger spark, which burns the fuel mixture more efficiently. This results in improved mid-range RPM power and a smooth idle, making them ideal for your modern GM muscle car or truck. These coils are designed as a direct bolt-in replacement and maintain the factory fit. They have been thoroughly tested and detailed by MSD’s experienced engineering team. MSD 82438 Blaster Ignition Coil Set Features: Fits 2004-2008 Ford 4.6L/5.4L/6.8L SOHC 3-Valve V8 engines Fits early 3-Valve engines with 16mm spark plug threads Coil Color: Red Coil Shape: Square Coil Style: Coil Pack Coil Wire Attachment: Female/Socket Coil Internal Construction: Epoxy Mounting Bracket Included: No Ballast Resistor Included: No Coil Wire Included: No Quantity: Sold as a set of 8 C.A.R.B. EO: D-40-42 From street cruisers to Top Fuel dragsters, MSD's ignition systems have been the industry leader for over 40 years. MSD continues to push the envelope with cutting-edge ignition technology as well as intake manifolds and EFI systems.