Ford FE 390 427 428 Internal Balanced Fluid Damper Harmonic Balancer SFI 18.1 ensuring a perfect fit and

ensuring a perfect fit and maximum efficiency

It has bendable locking tabs and comes with special high-strength bolts

All rockers feature large needle bearings and roller tips

These caps are engineered for high performance

Speedmaster shirts are the perfect way to let everyone know where you go for high performance aftermarket parts and accessories

Ford FE 390 427 428 Internal Balanced Fluid Damper Harmonic Balancer SFI 18.1 ensuring a perfect fit andUsing only three parts a laser welded sealed housing, an internal inertia ring, and highly viscous silicone fluid between the two these SFI approved Fluid dampers can control all crankshaft vibration, not just a limited frequency range. As a result, you get reduced wear on the main bearings and timing gear, more stable valvetrain operation, and less chance of crank failure.