Overview
The ZF 2094.303.065 COUNTERSHAFT is a critical torque-transfer component engineered specifically for the WG100, WG130, and WG131 transmission series. This OEM genuine part functions as the primary intermediate shaft, distributing rotational force from the input to the output gears within the transmission housing. The SKU 2094.303.065 is precision-machined to maintain exact gear mesh alignment, ensuring smooth power delivery under heavy industrial loads. It sits directly within the TRANSMISSION HOUSING, supported by bearings and sealed by the SEALING CAP to prevent contamination.
Symptoms of Failure
- Grinding or whining noise during gear engagement: Worn countershaft splines or bearing surfaces cause irregular gear contact, producing audible metal-on-metal sounds.
- Intermittent gear slippage under load: A damaged countershaft cannot maintain proper gear alignment, leading to power loss when accelerating or climbing.
- Oil leakage near the shaft housing interface: Excessive wear on the countershaft journals compromises the seal between the HOUSING and shaft, allowing transmission fluid to escape.
- Vibration or shuddering during operation: Bent or fatigued countershafts create imbalance, transmitting vibration through the HOUSING and driveline.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2094.303.065 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 385 mm (estimated) |
| Shaft Diameter | 45 mm (bearing journals) |
| Weight | 3.2 kg (7.1 lbs) |
| OEM Reference | ZF 2094.303.065 |
| Surface Treatment | Black oxide coating |
| Hardness | 58-62 HRC (case depth 0.8-1.2 mm) |
Compatibility
This countershaft is designed for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It also fits select variants of the WG180 and WG200 series when used with the correct COVER and GASKET. Always verify your transmission model and serial number before installation. The part integrates with the SHAFT SEAL and O-RING for leak-free operation, and is secured using the HEXAGON SCREW and CYLINDRICAL PIN.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101014 | TRANSMISSION HOUSING | Encloses and supports all gear train components |
| 2094301046 | HOUSING | Secondary housing for countershaft bearing support |
| 2094298053 | HOUSING | Rear housing section for output shaft alignment |
| 0630361034 | SEALING CAP | Prevents fluid leakage at shaft exit points |
| 2094301071 | COVER | Protects internal components from debris |
| 2094301030 | GASKET | Provides sealing between housing interfaces |
| 0750111371 | SHAFT SEAL | Dynamic seal for rotating shaft surfaces |
| 0634303085 | O-RING | Static seal for housing joints |
| 0631306670 | CYLINDRICAL PIN | Precise alignment of housing sections |
| 0636011356 | HEXAGON SCREW | Fastens housing and cover assemblies |
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