BBK Aluminum Under drive Pulley Kit for GM Truck 4.3/5.0/5.7L – 3 Piece is made from aircraft quality aluminum alloy. These BBK under drive front accessory pulley kits are one of the easiest ways to free up an average of 8-15 horsepower in under 30 minutes. These BBK pulley kits are designed as direct bolt on replacements for the current factory pulleys and retain full cooling and charging characteristics.

Product Features

• BBK is your Number One Aftermarket Performance Brand in the USA – American Designed and Built
• Installing a Set of BBK Performance Underdrive Pulleys is one of the Easiest Ways to Gain Approximately 8-10 Horsepower
• Direct Replacement Pulley Kit Re Uses Existing Serpentine Belt and Will Not Affect Cooling or Charging of the Vehicle
• Premium Quality CNC Machined Lightweight Billet Aluminum Pulley Kit Add Great Looks and Performance
• 3 Pc Kit Includes Crank, Water Pump and Alternator Pulleys and all Hardware and Instructions for Simple Installation

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