Hydro-Gear ZW-GNDF-B1GC-36LX ZT-3400 Integrated Hydrostatic Transaxle
Hydro-Gear ZW-GNDF-B1GC-36LX ZT-3400 Integrated Hydrostatic Transaxle
Hydro-Gear ZW-GNDF-B1GC-36LX ZT-3400 Transaxle
Built for demanding commercial zero-turn work, this ZT-3400 integrated hydrostatic transaxle combines serious torque capacity with serviceable construction. The benefit is controlled, confident drive under load—but only when the full ZW-GNDF-B1GC-36LX build code matches the original unit.
Why This Matters
ZT-3400 units are not interchangeable solely because they share the same family name. Axle, control, rotation, brake, and mounting details are encoded in the complete build number.
Product Specifications
| Manufacturer | Hydro-Gear |
|---|---|
| Current listed code | ZW-GNDF-B1GC-36LX |
| Supplier reference | ZW-GNDF-A1GC-36LX (identification/search aid; verify before treating as interchangeable) |
| Pump displacement | 12 cc/rev |
| Motor displacement | 16 cc/rev |
| Input speed | 1,800–3,600 rpm |
| Maximum torque | Up to 500 lb-ft |
| Maximum speed | Up to 10 mph |
| Gross vehicle weight | Up to 1,600 lb |
| Axle diameter | 1.125 in |
| Approximate weight | 34.5 lb |
Official Resources
The service manual is not equipment-specific installation guidance. Follow the machine manufacturer’s instructions for removal, installation, adjustment, and purging.
Before You Order
Hydrostatic components are configuration-specific. Match the complete model/build code and inspect the photos and connections before ordering. A partial family match is not enough. Cross-reference numbers are identification/search aids unless expressly confirmed as direct replacements.
Lead Time, Returns & Warranty
- Many HydroDrives-supplied units are built to order and may require approximately 10–15 business days before shipment.
- Orders may ship from a U.S. partner warehouse, subject to availability and order confirmation.
- Approved returns may be subject to a 20% restocking fee; original and return shipping are nonrefundable.
- Build-to-order, installed, used, damaged, or fluid-filled components may be nonreturnable.
- Manufacturer warranty coverage may require installation by an authorized service center. Confirm requirements before installation.