APR Supercharger Crank Pulley - 3.0 TFSI (MS100133) 1806 6 hub hole Description_ASM Front

6 hub hole Description_ASM Front S4K FMSI D784 2004 GMC Sierra 1500 1/2 Ton Extended Cab HD 4

Kit also comes complete with factory toe lock out washers to maintain desired settings

Exhaust Tubing Material: 409 SS

Aeromotive opted for a flow-thru design to solve the shaft seal failure

APR Supercharger Crank Pulley - 3.0 TFSI (MS100133) 1806 6 hub hole Description_ASM FrontAPR's Supercharger Drive and Crank Pulley Upgrades dramatically increase horsepower and torque by increasing the rotational speed of the factory supercharger. APR's Stage II Pulley ECU Upgrade makes the necessary engine management adjustments to handle the increased supercharger speeds, and in turn allows the engine to create more power. The pulleys are sold separately, allowing for multiple levels of performance, each of which builds upon the other.