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BBK Power-Plus underdrive pulley kit for Mustang GT and Cobra applications reduces accessory drag to free up engine output. CNC-machined billet aluminum pulleys replace factory units as direct bolt-on components while retaining cooling and charging function. Typical gains of 8–15 hp are reported; the three-piece kit includes crank, water pump and alternator pulleys, required hardware and installation instructions and allows reuse of existing serpentine belts.
BBK 02-04 Mustang 4.6 GT Underdrive Pulley Kit - Lightweight CNC Billet Aluminum (3pc)
