Overview
The ZF 4661.102.010 INPUT for WG94 is a critical OEM genuine component that serves as the primary power input interface within the WG 94 series transmission assembly. This part, identified by SKU 4661.102.010, directly transfers engine torque into the gear train, ensuring smooth engagement and reliable power delivery. Positioned at the front of the transmission housing, it interfaces with the torque converter and the main shaft, making it essential for initial gear engagement and overall drivetrain efficiency. When replacing this input unit, technicians often inspect the 4661101033: HOUSING for wear, as both components work in tandem to maintain alignment and fluid containment.
Symptoms of Failure
When the ZF 4661.102.010 input component begins to degrade, operators may notice specific performance issues. Common failure symptoms include:
- Oil leaks around the input shaft seal – Worn splines or bearing surfaces can cause fluid to escape, leading to low transmission fluid levels and overheating.
- Gear slipping under load – A damaged input hub may fail to maintain positive engagement, resulting in erratic shifting or loss of power during acceleration.
- Unusual grinding or whining noises – Excessive play in the input bearing or spline wear generates audible vibrations, especially at low speeds or during gear changes.
- Delayed engagement – A worn input assembly can cause a noticeable lag when shifting from neutral to drive or reverse, indicating internal clearance issues.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4661.102.010 |
| Material | Hardened alloy steel with surface treatment |
| Weight | Approx. 2.8 kg (6.2 lbs) |
| Dimensions (L x W x H) | 180 mm x 95 mm x 85 mm |
| OEM Reference | ZF 4661.102.010 (Genuine) |
| Torque Capacity | Up to 1,200 Nm (estimated for WG94 series) |
| Seal Type | Integrated lip seal with dust exclusion |
Compatibility
This genuine input part is specifically engineered for the ZF WG 94 series of transmissions, which includes models such as the WG180, WG200, and WG240. It is also compatible with certain variants of the WG160 and WG250 where the input spline count and pilot bore match. Always verify your transmission model and serial number before installation. During replacement, it is recommended to also inspect the 6073003011: CONTROL UNIT for electronic calibration, and the 4656183200: LOOSE PARTS kit for necessary fasteners and seals. Additionally, the 4661301096: HOUSING should be checked for cracks or distortion that could affect input alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656183200 | LOOSE PARTS | Contains seals, gaskets, and hardware for input assembly |
| 6073003011 | CONTROL UNIT | Manages shift timing and pressure modulation |
| 4661101033 | HOUSING | Encloses input shaft and supports bearing loads |
| 4661301096 | HOUSING | Secondary housing for auxiliary input components |
| 0631306174 | CYLINDRICAL PIN | Aligns input assembly to transmission case |
| 0769123894 | TYPE PLATE | Identification label for transmission model |
| 0750100022 | SCREW PLUG | Seals oil passages in input area |
| 4660201008 | SCREW PLUG | Drain or fill plug for input housing |
| 0636100117 | SCREW PLUG | Pressure test port plug |
| 0501211384 | VALVE | Regulates hydraulic flow to input clutch |
