[Vehicle Fitment]: ① Compatible with Chevrolet Avalanche 2500 2003-2006, Silverado 2500 HD 2002-2006, Silverado 2500 HD Classic 2007, Silverado 3500 2002-2006, Silverado 3500 Classic 2007, Suburban 2500 2003-2006; ② Compatible with GMC Sierra 2500 HD 2002-2006, Sierra 2500 HD Classic 2007, Sierra 3500 2002-2006, Sierra 3500 Classic 2007, Yukon XL 2500 2003-2006 --- V8 8.1L; It fits the model with 105A. Alternator, not 145A. Alternator/130A. Alternator; GAS, OHV [Kit Parts Included:]: ① 1x Belt Tensioner; ② 1x Idler Pulley; ③ 1x Belt [Special Note]: Please enter your vehicle information in the top left corner of the listing and check our Special Notes before ordering. [Functions]: A-Premium engine serpentine belt drive kit usually locates at the front of the engine and wraps around a set of sprockets. It ensures the connection between the camshaft and crankshaft, making the pistons and valves work together in the correct sequence. It will help the engine run normally, improve fuel efficiency, and thus effectively optimise the engine's performance. [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted engine timing belt kit. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind. A-premium Serpentine Belt Drive Component Kits are an ideal choice to replace your broken Serpentine Belt Drive Component Kits. All Serpentine Belt Drive Component Kits meet or exceed OEM specifications. Due to high manufacturing standard, it will come with one year quality guarantee.

Compatible with Chevrolet Models:
2003-2006 Avalanche 2500 V8 8.1L
2002-2006 Silverado 2500 HD V8 8.1L
2007-2007 Silverado 2500 HD Classic V8 8.1L
2002-2006 Silverado 3500 V8 8.1L
2007-2007 Silverado 3500 Classic V8 8.1L
2003-2006 Suburban 2500 V8 8.1L

Compatible with GMC Models:
2002-2006 Sierra 2500 HD V8 8.1L
2007-2007 Sierra 2500 HD Classic V8 8.1L
2002-2006 Sierra 3500 V8 8.1L
2007-2007 Sierra 3500 Classic V8 8.1L
2003-2006 Yukon XL 2500 V8 8.1L

Kit Parts Included:
1x Belt Tensioner
1x Idler Pulley
1x Belt

OEM Number:
Quantity Sold: A Set of Three Pieces
Note: It fits the model with 105A. Alternator, not 145A. Alternator/130A. Alternator; GAS, OHV