Install a set of BBK performance underdrive pulleys and see an average of 8-15 additional horsepower over the stock pulleys. Under drive pulleys increase engine output by reducing the draw of the engines accessories by slowing them down and reducing the HP they use. Additional and significant performance improvements can be seen by reducing the weight of the pulley versus the original pulley which is why we recommend the BBK CNC Machined billet aluminum pulley kits for maximum horsepower gains. ALL BBK pulley kits are designed as direct bolt on replacements for the current factory pulleys and retain full cooling and charging characteristics. BBK under drive pulley kits are vehicle specific and each kit comes with complete installation instructions. Requires the use of a NEW Serpentine Belt - 6 Rib - 91.5 in.

This Part Fits:

Year	Make	Model	Submodel
1994-1995	Chevrolet	Blazer	Base
1992-1993	Chevrolet	Blazer	Cheyenne
1995	Chevrolet	Blazer	LT
1988-1991	Chevrolet	Blazer	Scottsdale
1988-1994	Chevrolet	Blazer	Silverado
1994	Chevrolet	Blazer	Silverado Sport
1994-1995	Chevrolet	C1500	Base
1988-1995	Chevrolet	C1500	Cheyenne
1988-1992	Chevrolet	C1500	Scottsdale
1988-1995	Chevrolet	C1500	Silverado
1990-1995	Chevrolet	C1500	WT
1992-1995	Chevrolet	C1500 Suburban	Base
1995	Chevrolet	C1500 Suburban	LS
1995	Chevrolet	C1500 Suburban	LT
1992-1994	Chevrolet	C1500 Suburban	Silverado
1994-1995	Chevrolet	C2500	Base
1988-1995	Chevrolet	C2500	Cheyenne
1988-1992	Chevrolet	C2500	Scottsdale
1988-1995	Chevrolet	C2500	Silverado
1994-1995	Chevrolet	C2500	WT
1992-1995	Chevrolet	C2500 Suburban	Base
1995	Chevrolet	C2500 Suburban	LS
1995	Chevrolet	C2500 Suburban	LT
1992-1994	Chevrolet	C2500 Suburban	Silverado
1994-1995	Chevrolet	C3500	Base
1988-1995	Chevrolet	C3500	Cheyenne
1988-1992	Chevrolet	C3500	Scottsdale
1988-1995	Chevrolet	C3500	Silverado
1994-1995	Chevrolet	K1500	Base
1988-1995	Chevrolet	K1500	Cheyenne
1988-1992	Chevrolet	K1500	Scottsdale
1988-1995	Chevrolet	K1500	Silverado
1991	Chevrolet	K1500	Sport
1990-1995	Chevrolet	K1500	WT
1992-1995	Chevrolet	K1500 Suburban	Base
1995	Chevrolet	K1500 Suburban	LS
1995	Chevrolet	K1500 Suburban	LT
1992-1994	Chevrolet	K1500 Suburban	Silverado
1994-1995	Chevrolet	K2500	Base
1988-1995	Chevrolet	K2500	Cheyenne
1988-1992	Chevrolet	K2500	Scottsdale
1988-1995	Chevrolet	K2500	Silverado
1994-1995	Chevrolet	K2500	WT
1992-1995	Chevrolet	K2500 Suburban	Base
1995	Chevrolet	K2500 Suburban	LS
1995	Chevrolet	K2500 Suburban	LT
1992-1994	Chevrolet	K2500 Suburban	Silverado
1994-1995	Chevrolet	K3500	Base
1988-1995	Chevrolet	K3500	Cheyenne
1988-1992	Chevrolet	K3500	Scottsdale
1988-1995	Chevrolet	K3500	Silverado
1989-1991	Chevrolet	R1500 Suburban	Scottsdale
1989-1991	Chevrolet	R1500 Suburban	Silverado
1988	Chevrolet	R20	Cheyenne
1988	Chevrolet	R20	Custom Deluxe
1988	Chevrolet	R20	Scottsdale
1988	Chevrolet	R20	Silverado
1988	Chevrolet	R20 Suburban	Scottsdale
1988	Chevrolet	R20 Suburban	Silverado
1989	Chevrolet	R2500	Silverado
1989-1991	Chevrolet	R2500 Suburban	Scottsdale
1989-1991	Chevrolet	R2500 Suburban	Silverado
1988	Chevrolet	R30	Cheyenne
1988	Chevrolet	R30	Custom Deluxe
1988	Chevrolet	R30	Scottsdale
1988	Chevrolet	R30	Silverado
1989-1991	Chevrolet	R3500	Cheyenne
1989-1990	Chevrolet	R3500	Scottsdale
1989-1991	Chevrolet	R3500	Silverado
1991	Chevrolet	S10	Baja
1988-1995	Chevrolet	S10	Base
1988-1990	Chevrolet	S10	Durango
1992-1993	Chevrolet	S10	EL
1994-1995	Chevrolet	S10	LS
1988-1989	Chevrolet	S10	Sport
1994-1995	Chevrolet	S10	SS
1988-1992	Chevrolet	S10	Tahoe
1994-1995	Chevrolet	S10	ZR2
1988-1994	Chevrolet	S10 Blazer	Base
1988-1989	Chevrolet	S10 Blazer	High Country
1994	Chevrolet	S10 Blazer	LT
1988-1990,1992	Chevrolet	S10 Blazer	Sport
1988,1990-1994	Chevrolet	S10 Blazer	Tahoe
1991-1994	Chevrolet	S10 Blazer	Tahoe LT
1995	Chevrolet	Tahoe	Base
1995	Chevrolet	Tahoe	LS
1995	Chevrolet	Tahoe	LT
1988	Chevrolet	V30	Cheyenne
1988	Chevrolet	V30	Custom Deluxe
1988	Chevrolet	V30	Scottsdale
1988	Chevrolet	V30	Silverado
1989-1991	Chevrolet	V3500	Cheyenne
1989-1990	Chevrolet	V3500	Scottsdale
1989-1991	Chevrolet	V3500	Silverado
1988-1993	GMC	C1500	Sierra
1994-1995	GMC	C1500	Sierra SL
1988-1995	GMC	C1500	Sierra SLE
1994-1995	GMC	C1500	Sierra SLT
1988-1993	GMC	C1500	Sierra SLX
1994-1995	GMC	C1500	Sierra Special
1988-1993	GMC	C2500	Sierra
1994-1995	GMC	C2500	Sierra SL
1988-1995	GMC	C2500	Sierra SLE
1994-1995	GMC	C2500	Sierra SLT
1988-1993	GMC	C2500	Sierra SLX
1988-1993	GMC	C3500	Sierra
1994-1995	GMC	C3500	Sierra SL
1988-1995	GMC	C3500	Sierra SLE
1994-1995	GMC	C3500	Sierra SLT
1988-1993	GMC	C3500	Sierra SLX
1988-1993	GMC	K1500	Sierra
1994-1995	GMC	K1500	Sierra SL
1988-1995	GMC	K1500	Sierra SLE
1995	GMC	K1500	Sierra SLS
1994-1995	GMC	K1500	Sierra SLT
1988-1993	GMC	K1500	Sierra SLX
1994-1995	GMC	K1500	Sierra Special
1993	GMC	K1500	Sierra Sport
1988-1993	GMC	K2500	Sierra
1994-1995	GMC	K2500	Sierra SL
1988-1995	GMC	K2500	Sierra SLE
1994-1995	GMC	K2500	Sierra SLT
1988-1993	GMC	K2500	Sierra SLX
1988-1993	GMC	K3500	Sierra
1994-1995	GMC	K3500	Sierra SL
1988-1995	GMC	K3500	Sierra SLE
1994-1995	GMC	K3500	Sierra SLT
1988-1993	GMC	K3500	Sierra SLX
1988-1989	GMC	R2500	Base
1988-1989	GMC	R2500	High Sierra
1988-1989	GMC	R2500	Sierra Classic
1988-1991	GMC	R3500	Base
1988-1989	GMC	R3500	High Sierra
1988-1989	GMC	R3500	Sierra Classic
1990-1991	GMC	R3500	SLE
1988-1991	GMC	V3500	Base
1988-1989	GMC	V3500	High Sierra
1988-1989	GMC	V3500	Sierra Classic
1990-1991	GMC	V3500	SLE