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The BBK Power-Plus three-piece underdrive pulley kit for 1988–1995 GM truck 4.3/5.0/5.7L engines is a CNC-machined billet aluminum system that replaces factory pulleys to reduce accessory load. The bolt-on design retains proper cooling and charging while lowering parasitic drag. Includes crank, water pump and alternator pulleys with hardware and instructions; lightweight construction can yield an average 8–15 horsepower gain and requires a new 6-rib serpentine belt.
BBK 88-95 GM Truck 4.3 5.0 5.7 Underdrive Pulley Kit - Lightweight CNC Billet Aluminum (3pc)
