Shop 2001 Buick Century Idler Pulley. 6.6 LITER GAS, W/DUAL ALTERNATORS, grooved. Silverado, Sierra Drive, Dual, Gas, Belt - OEM Buick Part # 12729057 (12675951)

Accessory Drive Belt Idler Pulley

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

6.6 LITER GAS, W/DUAL ALTERNATORS, grooved. Silverado, Sierra 2500 HD; Dual Alternator; Gas; Lower; Ribbed. Silverado, Sierra 3500 HD; Dual Alternator; Gas; Lower; Ribbed.
Drive Belt Idler Pulley - Repair or Replace
If you've noticed that the drive belt on your is becoming worn or is making a squealing noise, your drive belt idler pulley may be worn out. Replacing your drive belt idler pulley may be the solution.