Speedmaster PCE291.1067 Mopar BB Hemi 440 7" Int SFI Fluid Harmonic Damper

Mopar Chrysler BB HEMI 440 7" Int SFI Approved Fluid Harmonic Balancer Damper 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. Reduced wear on the main bearings and timing gear, more stable valvetrain operation, and less chance of crank failure SFI Approved