Pump Drive Pulley for HTG Hydrostatic Transmission Lawn Mower SKU: 450-0021-00

When hydrostatic drive pulleys wear out, crack, or come loose, your mower loses power transfer efficiency and drive belt tracking goes off. This pump drive pulley restores precise belt alignment and maintains the consistent power flow your HTG hydrostatic transmission needs for smooth, reliable operation.

Why This Pulley Matters

• Precision-machined grooves ensure proper belt tracking and prevent slippage under load
• Durable construction resists wear from heat, vibration, and continuous belt contact
• Exact specifications maintain proper belt tension for optimal hydrostatic performance
• Genuine Spartan Parts quality built for commercial mowing demands

A worn pump pulley causes jerky drive response, belt squealing, and eventually complete drive failure. This replacement gets your hydrostatic system back to smooth, predictable operation. Our team at S&H Parts has been matching the right drive components to lawn equipment since 1969.