Overview
The ZF 2095.310.016 PISTON is a critical hydraulic actuation component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part converts hydraulic pressure into precise mechanical force to engage clutch packs and shift gears within the transmission valve body. As a precision-machined component, the SKU 2095.310.016 ensures reliable sealing and consistent pressure application, directly influencing shift quality and torque transfer. When paired with the 2095109013 DIFFERENTIAL and the 2095209037 DIFFERENTIAL, this piston maintains the hydraulic integrity required for smooth power delivery in heavy-duty applications.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn 2095.310.016 piston loses sealing capability, causing sluggish shifts or abrupt clutch application during acceleration.
- Internal transmission oil leaks: Degraded piston seals allow hydraulic fluid to bypass, resulting in low line pressure and visible oil seepage around the valve body area.
- Transmission slipping under load: Insufficient piston stroke prevents full clutch pack clamping, leading to RPM flare and power loss when climbing grades or towing.
- Erratic shift patterns: Inconsistent piston movement causes the transmission to hunt between gears or fail to hold a selected gear under moderate throttle.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2095.310.016 |
| Material | Hardened alloy steel with nitrile sealing surface |
| Outer Diameter | 48.5 mm |
| Overall Length | 62.3 mm |
| Weight | 0.185 kg |
| OEM Reference | ZF 2095.310.016 |
| Seal Type | Integrated PTFE lip seal |
Compatibility
This piston is designed exclusively for ZF WG-series transmissions. Confirmed fitment includes the WG100, WG130, and WG131 models. It also serves as a direct replacement in certain WG180 and WG200 variants that share the same valve body architecture. For differential-side assemblies, the 0750117075 TAPER ROLLER BEARING and 2095309059 DIFF.HOUSING are commonly replaced during the same overhaul procedure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109013 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on shafts |
| 2095209037 | DIFFERENTIAL | Secondary torque distribution unit |
| 2095309059 | DIFF.HOUSING | Encloses differential gear set |
| 0631329086 | SPRING PIN | Retains piston in valve body bore |
| 0730300820 | THRUST WASHER | Reduces axial friction between rotating parts |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential to wheel hubs |
| 5838300811 | THRUST WASHER | Controls end-play in gear sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Provides final gear reduction in differential |
