Improved Design; Smaller Pulley vs. Original
W/105A. Alt.
W/145A. Alt.
105A Alt Kit Includes Poly-V, Tensioner Assembly and Idler Pulleys
(145A Alt) Kit Includes Poly-V, Tensioner Assembly and Idler Pulleys
Installation Tool Required
Browse our selection of quality serpentine belt drive component kit parts designed specifically for your GMC Sierra. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
AT4 · All Terrain · Base · Denali · SLE · SLT
Crew Cab Pickup · Standard Cab Pickup
V8 5.3L · V8 6.2L
Automatic