Billet Specialties Polished SB Chevy Double Groove Water Pump Pulley - SB Chevy - Short Water Pump 42041BL Shift Improver Kit for TH2004R

Shift Improver Kit for TH2004R

1982-1986 GMC K1500 Suburban

GM Compact SUV 2013-21

1983-1989 Mitsubishi Starion

and black aluminum base

Billet Specialties Polished SB Chevy Double Groove Water Pump Pulley - SB Chevy - Short Water Pump 42041BL Shift Improver Kit for TH2004RThe benefit of a billet aluminum pulley over a cast pulley is equal density. With a cast pulley, the aluminum is poured into a mold and then allowed to cool. This process can create variations in density throughout the pulley. Dense areas are heavier than the more porous areas causing the pulley to vibrate at high RPM. Our billet pulleys are equally dense throughout; equal weight translates to a true and balanced pulley drive system. Billet