Hydro-Gear 72736 6cc Cylinder Block Assembly Kit OEM Replacement

The Hydro-Gear 72736 is a genuine OEM 6cc Cylinder Block Assembly Kit designed for use in Hydro-Gear hydrostatic transaxles found in zero-turn and residential riding lawn mowers. This is an updated part that supersedes earlier cylinder block kit part numbers, including 72723, 72647, and 71169, consolidating them into a single current replacement.

The cylinder block assembly serves as the core internal housing for the piston assembly within a hydrostatic transaxle pump or motor section. A worn or damaged cylinder block can cause loss of hydraulic pressure, reduced drive performance, or complete drive failure. Replacing it with this genuine Hydro-Gear kit restores the transaxle to proper operating condition.

Key Features:

• 6cc displacement cylinder block assembly for Hydro-Gear hydrostatic transaxle applications
• Genuine Hydro-Gear OEM part — ensures precise fit and correct tolerances
• Supersedes part numbers: 72723, 72647, and 71169
• Precision-machined for correct piston alignment and optimal hydraulic compression
• Restores proper hydraulic power transmission in worn or damaged transaxle units
• Compatible with Hydro-Gear hydrostatic transaxle and integrated zero-turn transaxle models

Using genuine OEM components like the Hydro-Gear 72736 is critical when rebuilding hydrostatic transaxles. Aftermarket substitutes may not meet the tight tolerances required for reliable hydraulic function. Always reference your transaxle model's service manual or parts diagram to confirm this cylinder block kit is correct for your specific unit.