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Polychain Pulley/Sprocket 1"bore x 2.5" od
$96.60
Polychain Pulley/Sprocket 1"bore x 2.5" od. Sheaves, pulleys, and sprockets set the drive ratio between engine and pump, which determines pump RPM.
Drive ratio is what lets a belt drive machine run the pump slower than the engine — the entire reason belt drive extends pump life. Changing sheave size changes pump speed, which changes both flow output and pump loading, so this isn't a part to substitute casually.
Confirm bore size, groove count, and outside diameter. Getting drive ratio wrong either underloads the pump or overspeeds it, and overspeeding destroys pumps quickly.
Grime Task Force stocks pump and drive components because these systems are designed to be serviced, and the difference between a machine that lasts five years and one that lasts fifteen is usually whether wear parts got replaced on time.
Frequently Asked Questions
What does this part fit? Polychain Pulley/Sprocket 1"bore x 2.5" od. Confirm your pump model and series before ordering.
Why did my original part fail? Most pump component failures trace back to a root cause — water in the oil, running dry, debris from poor inlet filtration, or freeze damage. Find it before refitting.
Can I replace this myself? Many pump components are straightforward service items. Major internal work benefits from proper tooling and torque specifications.
Quantity
Out of stock
