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The BBK 3-piece underdrive pulley kit for 1986–1993 Mustang 5.0 is a CNC-machined billet aluminum system that replaces factory pulleys to reduce accessory drag. Direct bolt-on fitment reuses the factory serpentine belt and retains proper cooling and charging while helping free up an average of 8–15 horsepower. Kit includes crank, water pump and alternator pulleys plus required hardware and instructions.
BBK 86-93 Mustang 5.0 Underdrive Pulley Kit - Lightweight CNC Billet Aluminum (3pc)
