Chevy GM LS 6.780" 10% Underdrive Harmonic Balancer Damper SFI 18.1 These polished

These polished

Embroidered Speedmaster logo

stable air flow at any rpm

These Speedmaster expansion tanks are perfect for cars with low-mount radiators to provide a convenient filling location and to bleed off unwanted air

don't blow it with a standard air cleaner

Chevy GM LS 6.780" 10% Underdrive Harmonic Balancer Damper SFI 18.1 These polishedSpeedmaster Harmonic dampers feature a bonding process which adheres the elastomer to the i. d. of the inertia ring and the o. d. of the hub, utilizing a strong adhesive along with an improved elastomer to create a much stronger bond. The inertia ring rotates harmonically with the engine and absorbs the torsion vibration from the rotating assembly at any frequency and RPM. It extends the life of crankshaft and bearing which allows the engine to