3-Piece Polished Aluminum Underdrive Pulley Kit

The SR Performance 41129 is a 3-piece polished aluminum underdrive pulley kit engineered to reduce parasitic drivetrain loss in 1996 to mid-2001 GT Mustangs equipped with the SOHC 4.6L V8 engine. By cutting down the power your accessories consume, these pulleys are designed to free up an estimated 10-15 horsepower without compromising essential cooling and charging functions. Crafted from durable, lightweight aircraft-grade aluminum alloy, this kit boasts a brilliant polished finish, offering a high-performance aesthetic upgrade for your engine bay. The pulleys are CNC-machined for strength and longevity. Installation is designed to be straightforward, with an approximate time of 2 hours and requiring only light to moderate mechanical skill. No modifications are necessary for installation, and the kit reuses the factory belt. It's important to note that for 2001 models, this kit is compatible only with Mustangs produced until mid-year, as Ford changed the water pump design to a shorter shaft later in the production run. What's in the Box: (3) Pulleys (3) Small Bolts (1) Large Bolt (2) Spacers (1) Key Way