Chevy GM LS LS1 LS6 UnderDrive Fluid Damper Harmonic Balancer SFI 18.1 and reduced friction to extend

and reduced friction to extend their life

Speedmaster machined aluminum water pump pulley nose cones are offered straight off of the mill without polishing for a gorgeous matte finish

They feature greater strength and durability

capable of withstanding valve spring load

as well as keep them in line

Chevy GM LS LS1 LS6 UnderDrive Fluid Damper Harmonic Balancer SFI 18.1 and reduced friction to extendUsing 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.