Hydro-Gear ZJ-GCEE-SB5A-1MXX Hydrostatic Transaxle

The complete Hydro-Gear build code is the fitment—not just the shape of the housing. This genuine replacement is identified as ZJ-GCEE-SB5A-1MXX for equipment originally using that exact configuration.

The supplier record also lists ZJ-GCEE-3B5A-1FXX. Treat that number as an identification and search aid until current supersession and equipment fitment are confirmed.

Why this matters

• Full-code matching accounts for controls, shafts, brake, ports, orientation, and mounting details.
• Clear reference labeling helps find older documentation without promising universal interchangeability.
• Positive identification protects against an expensive discovery after installation begins.

Verified identification

Official Hydro-Gear resources

• Hydro-Gear support — manufacturer service and document lookup.
• Hydro-Gear product families — general family information.

Document note: Use the mower manufacturer’s model- and serial-specific installation procedure; a family page or service manual is not automatically an installation guide for every configuration.

Ordering, lead time, returns, and warranty

• Match the full identification number on the original component and verify the equipment model and serial number.
• Many HydroDrives-supplied units are built to order and may require approximately 10–15 business days before shipment.
• Approved returns may incur a 20% restocking fee; original and return shipping charges are nonrefundable.
• Build-to-order, installed, used, damaged, or fluid-filled components may be ineligible for return.
• Applicable Hydro-Gear warranty coverage may require authorized-service-center installation. Retain service records.

Orders may ship directly from a U.S. partner warehouse. Availability and timing are subject to supplier confirmation.