poly belt

The timing belt is made of durable rubber reinforced with materials such as fiberglass or steel to withstand the high temperatures and intense pressures found in an engine. Unlike the serpentine belt, which drives several accessories such as the alternator and power steering pump, the timing belt is a critical part of the engine’s design and function. It typically has teeth or ribs that mesh with the gears on the crankshaft and camshaft, providing a secure grip that prevents slippage.


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The PK belt, also known as a serpentine belt or ribbed belt, is a key element of the engine's accessory drive system. It is named for its PK section profile, which features a series of ribs that permit better grip on pulleys. This design allows the belt to efficiently drive multiple components such as the alternator, power steering pump, water pump, and air conditioning compressor. The effective operation of these systems is crucial for the vehicle’s performance, safety, and comfort.


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