Description: Genuine GM V-Ribbed Serpentine Belt, part number 12667356. This GM OEM v-ribbed serpentine belt drives the engine's accessories, such as the alternator, water pump and A/C compressor, from the crankshaft pulley. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12667356 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: Genuine GM Drive Belt Tensioner, part number 12670574. This GM OEM drive belt tensioner keeps proper tension on the belt or chain so it runs quietly and does not slip or jump. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12670574 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: Sierra, silverado. 5.3l. Drive belt. Grooved. Helps repair noisy idler pulley bearing This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type