double sided toothed belt

The term 7pk refers to the specification of a serpentine belt. The 7 denotes the number of ribs or grooves that the belt has, while pk indicates that it is a type of poly-V belt, which features multiple ribs running along its length. These ribs enhance grip and allow the belt to transmit power effectively across various pulleys in an engine. The poly-V design aids in reducing friction, which in turn improves fuel efficiency and engine performance.


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A timing belt is a rubber band with high-tensile strength and is anchored with fibers and teeth. It synchronizes the rotation of the engine’s crankshaft and camshaft(s), ensuring that the engine's valves open and close at the correct times during each cylinder’s intake and exhaust strokes. Without a properly functioning timing belt, your Nissan's engine performance could significantly decline, potentially leading to catastrophic engine failure.


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