Overview
The ZF 2095.322.011 PUMP FLANGE is a critical hydraulic interface component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part serves as the mounting and sealing point between the transmission pump and the main housing, ensuring precise oil flow delivery to the hydraulic control system. The SKU 2095.322.011 is machined from high-strength cast iron to withstand continuous pressure cycling and thermal expansion. When paired with a properly maintained 2095109020: DIFFERENTIAL, this flange maintains the structural integrity of the entire pump assembly, preventing misalignment that could lead to premature wear on adjacent drivetrain components.
Symptoms of Failure
- External oil seepage at pump-to-housing joint – A worn or cracked 2095.322.011 flange often causes visible hydraulic fluid leaks around the pump mounting area, particularly during cold starts or under heavy load.
- Intermittent gear engagement hesitation – When the flange face becomes warped, pump pressure drops, leading to delayed clutch pack engagement and a “slipping” sensation during gear changes.
- Whining or cavitation noise from transmission pump – A degraded flange seal allows air ingestion into the hydraulic circuit, producing a high-pitched whine that intensifies with engine RPM.
- Erratic shift quality under load – Flange distortion causes inconsistent oil volume delivery, resulting in harsh or delayed shifts, especially when towing or climbing grades.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2095.322.011 |
| Material | GJS-500-7 Ductile Cast Iron |
| Overall Diameter | 185 mm (7.28 in) |
| Flange Thickness | 22 mm (0.87 in) |
| Bolt Hole PCD | 160 mm (6.30 in) |
| Weight | 1.45 kg (3.20 lbs) |
| OEM Reference | ZF 2095.322.011 |
| Surface Finish | Ra 0.8 µm ground sealing face |
Compatibility
This pump flange is specifically engineered for ZF WG-series powershift transmissions. Confirmed compatible models include WG100, WG130, and WG131 series. It also fits select variants of the WG180 and WG200 transmissions when used with the appropriate gasket kit. The flange interfaces directly with the pump drive shaft and the 0750117075: TAPER ROLLER BEARING which supports axial loads from the pump gear. For complete differential rebuilds, this part must be installed alongside the 2095209037: DIFFERENTIAL and the 2095309059: DIFF.HOUSING to ensure proper alignment of the entire hydraulic circuit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109020 | DIFFERENTIAL | Distributes torque between drive axles |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial pump shaft loads |
| 2095209037 | DIFFERENTIAL | Secondary torque distribution unit |
| 2095309059 | DIFF.HOUSING | Encloses differential gear set |
| 0631329086 | SPRING PIN | Secures flange alignment dowels |
| 0730300820 | THRUST WASHER | Controls axial clearance in pump stack |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2095309081 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Prevents gear-to-housing contact |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary torque splitting gear |
