E46 M3 Accessory Belt - Air Conditioner

Accessory drive belts keep everything turning off of the crank pulley. AC compressors rely on this belt to keep everything working properly. If your drive belt is getting old, cracking, glazing, or squeaking, replace it.

It's easy to see when the belts are beginning to wear. Visually, the belt will begin to glaze on the underside, making it far less effective. Cracks can appear on the back of the belt from “dry rot” caused by exposure to engine heat or age. Squealing is common on worn belts which basically means that the belt is slipping on pulleys. In either case, your vehicle needs a new belt.

This unit from ECS is a great replacement. Designed for long life, this belt will keep everything turning great and all of your accessories working properly. With a worn belt, accessories aren't working at maximum efficiency. Do not wait for this belt to break to replace. Replace it as part of your next maintenance plans.