Speedmaster PCE291.1074 Ford FE 390 427 428 SFI Fluid Harmonic Balancer Damper

Ford FE 390 427 428 Sfi Approved Fluid Harmonic Balancer Dampner Using 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. This damper is internal balanced Reduced wear on the main bearings and timing gear, more stable valvetrain operation, and less chance of crank failure SFI Approved