Overview
The ZF 2094.103.011 COUNTERSHAFT is a critical torque-transfer component within the WG100, WG130, and WG131 transmission assemblies. This OEM genuine part serves as the secondary shaft that distributes rotational force from the input to the output gears, enabling precise speed and torque management in heavy-duty industrial drivetrains. Manufactured to ZF’s exacting tolerances, the 2094.103.011 countershaft interfaces directly with the 2094101014: TRANSMISSION HOUSING and the 2094301046: HOUSING to maintain gear alignment under high load. Its SKU, 2094.103.011, is laser-etched for traceability and ensures a direct OEM replacement without modification.
Symptoms of Failure
- Grinding or whining noise during gear engagement: A worn countershaft bearing journal or spline wear produces audible metallic sounds, especially under load or during deceleration.
- Intermittent gear slippage or loss of power transfer: When the countershaft’s gear teeth or keyways degrade, the transmission may fail to hold a gear, causing sudden RPM spikes without vehicle movement.
- Metal particles in transmission fluid: Flaking or pitting on the countershaft surface contaminates the oil, often visible as glittering debris during routine fluid checks.
- Vibration through the driveline: A bent or unbalanced countershaft induces rhythmic shaking that worsens at higher speeds, indicating imminent bearing or housing damage.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 2094.103.011 |
| Overall Length | ~385 mm (estimated) |
| Journal Diameter | ~45 mm (estimated) |
| Spline Count | 24-tooth involute (estimated) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | ~3.2 kg (7.1 lbs) |
| OEM Reference | ZF 2094.103.011 |
| Surface Treatment | Black oxide or phosphate coating |
Compatibility
This countershaft is engineered specifically for ZF’s WG-series industrial transmissions. Verified fitment includes the WG100, WG130, and WG131 models. It may also be compatible with the WG180 and WG200 series when used in conjunction with the 2094298053: HOUSING and the 0630361034: SEALING CAP. Always verify your transmission’s serial number against ZF’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101014 | TRANSMISSION HOUSING | Encloses and supports the countershaft assembly |
| 2094301046 | HOUSING | Provides bearing seat and oil channel for countershaft |
| 2094298053 | HOUSING | Rear housing section aligning countershaft output |
| 0630361034 | SEALING CAP | Prevents fluid leakage at countershaft end |
| 2094301071 | COVER | Protects countershaft access port |
| 2094301030 | GASKET | Seals housing-to-countershaft interface |
| 0750111371 | SHAFT SEAL | Dynamic seal around rotating countershaft |
| 0634303085 | O-RING | Static seal for countershaft bore |
| 0631306670 | CYLINDRICAL PIN | Aligns countershaft to gear cluster |
| 0636011356 | HEXAGON SCREW | Secures countershaft retaining plate |
