Overview
The ZF 2095.319.064 PISTON is a critical hydraulic actuation component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part converts hydraulic pressure into mechanical force to engage clutch packs and modulate gear shifts within the transmission valve body. As a precision-machined component, the SKU 2095.319.064 ensures consistent oil flow control and prevents cross-port leakage during high-torque operations. When paired with the 2095109020 DIFFERENTIAL and the 2095209037 DIFFERENTIAL, this piston maintains proper hydraulic balance across the drivetrain. The part also interfaces directly with the 2095309059 DIFF.HOUSING to stabilize pressure regulation during load shifts.
Symptoms of Failure
- Delayed or harsh gear engagement – A worn piston seal causes inconsistent hydraulic pressure, leading to noticeable lag or clunking when shifting from neutral to drive or reverse.
- Transmission oil seepage – Cracks or scoring on the piston bore allow ATF to bypass the seal, resulting in visible drips near the valve body or bell housing.
- Intermittent gear slipping under load – When the piston fails to hold pressure, clutch packs partially disengage during acceleration, causing RPM flare without corresponding speed increase.
- Erratic shift patterns – A sticking piston can cause the transmission to hunt between gears or skip shifts entirely, particularly in stop-and-go driving conditions.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2095.319.064 |
| Material | Hardened aluminum alloy with PTFE seal ring |
| Outer Diameter | 38.5 mm |
| Inner Diameter | 22.0 mm |
| Height | 18.2 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 2095.319.064 |
| Seal Type | Double-lipped PTFE |
Compatibility
This piston is specifically designed for ZF WG-series powershift transmissions used in industrial and agricultural machinery. It is a direct fit for the following models:
- ZF WG100
- ZF WG130
- ZF WG131
- ZF WG180 (with adapter kit)
- ZF WG200 (with adapter kit)
Always verify your transmission serial number before installation. For differential assemblies, consider replacing the 0750117075 TAPER ROLLER BEARING simultaneously to prevent premature wear on the new piston.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109020 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on shaft |
| 2095209037 | DIFFERENTIAL | Secondary torque distribution unit |
| 2095309059 | DIFF.HOUSING | Encloses differential gears |
| 0631329086 | SPRING PIN | Retains piston alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential to wheel hub |
| 5838300811 | THRUST WASHER | Secondary axial load management |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Changes torque direction in differential |
