This belt fit for the air conditioning system of many car brands and models, fit for GMC, Cadillac, Hummer, and V8 4.2/4.8/5.3/6.2/6.6L engine models such as H2, Silverado and Escalade.The air conditioning belt is an important component in the car's air conditioning system, which is used to drive the air conditioning compressor to ensure the normal operation of the air conditioning system. Choosing the right air conditioning belt is essential to keep the vehicle's air conditioning system running properly. If the air conditioning belt is worn or faulty, it may cause the air conditioning system to not work properly. It is important to replace the belt in advance.