Forklift Water Pump Pulley SHA41121 – Yunnei Engine

Forklift Water Pump Pulley SHA41121 — Fan Belt Drive Pulley for Yunnei Engine Water Pump

This forklift water pump pulley part number SHA41121 is a Kingstream OEM fan belt drive pulley for the Yunnei diesel engine water pump used in forklift trucks across building material, manufacturing, construction, port, warehousing, logistics, mining, and agricultural environments. The water pump pulley is the belt-driven wheel mounted on the water pump shaft — the fan belt wraps around this pulley and the engine crankshaft pulley, transferring engine rotation to drive the water pump impeller. A worn, bent, or cracked pulley causes the fan belt to run off-center, creating belt squeal, accelerated belt wear, and reduced water pump speed that compromises engine cooling. 1.3kg with 20×20×10cm packaging. 100% professional tested with carton box packaging and 7-15 day delivery. Kingstream OEM available.

Installing the pulley requires removing the fan belt, unbolting the old pulley from the water pump shaft flange, and torquing the replacement pulley bolts to specification in a cross pattern. The pulley must run true without wobble — verify by rotating the pulley by hand and checking for visible runout before installing the fan belt. A wobbling pulley causes the fan belt to track off-center under load, creating belt squeal, accelerated belt and pulley groove wear, and eventually throwing the belt completely — resulting in immediate loss of water pump drive, alternator charging, and engine overheating within minutes. Before installation, inspect the water pump shaft for bearing play — a wobbly water pump shaft will cause even a perfectly straight new pulley to wobble, and the root cause (failed water pump bearing) must be addressed rather than just replacing the pulley. After installing the fan belt, verify the belt tracks in the center of the pulley groove and does not ride up on the groove edges or contact the pulley flange. 100% professional tested quality.

Technical Specifications

100% professional tested. Carton box packaging. Kingstream OEM. For bulk orders, contact us.