Easy Bolt On Power Upgrade
BBK pulley kits are designed as direct bolt on replacements for the current factory pulleys and retain full cooling and charging characteristics. BBK underdrive Mustang pulley kits are one of the easiest ways to free up an average of 8-10 horsepower in under 30 minutes.
Each kit comes with complete installation instructions and retains the use of the stock length serpentine belt.
Please note that the crank pulley is to be used with existing OEM crank damper (AKA piggy-back style). In 2001 Ford changed the water pump mid year, please verify this is correct kit for your vehicle
2001-2004 Mustang GT (2001 models check instructions for water pump identification)