Overview
The ZF 4661.103.002 OUTPUT for WG94 is a precision-engineered component designed to transfer rotational force from the transmission’s planetary gear set to the driveline. Positioned at the rear of the WG 94 series housing, this OEM genuine part ensures seamless power delivery in heavy-duty industrial applications. The SKU 4661.103.002 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life. When paired with a robust TRANSMISSION HOUSING (4661101013), this output assembly maintains structural integrity under high torque loads. Proper installation of this component is critical for preventing premature wear in the entire drivetrain system.
Symptoms of Failure
- Oil seepage around the output shaft seal: A worn 4661.103.002 output often leads to fluid migration past the seal, causing visible drips on the transmission housing. This is a common long-tail search query for “ZF WG94 output shaft oil leak repair.”
- Intermittent gear slipping under load: When the output splines degrade, torque transfer becomes inconsistent, resulting in momentary loss of drive power during acceleration. Technicians frequently search for “WG200 gear slipping when loaded” as a related symptom.
- Vibration or whining noise from the rear transmission area: Bearing surface wear on the output component generates audible noise that intensifies with vehicle speed. This aligns with queries like “ZF transmission whining noise after replacement.”
- Difficulty engaging reverse or low gears: A damaged output can disrupt the hydraulic balance within the valve body, leading to harsh or delayed engagement. This symptom is often reported alongside “ZF WG94 reverse engagement failure.”
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4661.103.002 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 2.85 kg (6.28 lbs) |
| Outer Diameter | 98.4 mm |
| Overall Length | 142.7 mm |
| Spline Count | 24 (internal), 28 (external) |
| OEM Reference | ZF 4661.103.002 |
| Surface Finish | Black oxide coated |
Compatibility
This output component is engineered for the ZF WG 94 series, including models such as the WG180, WG200, and WG240. It is also compatible with select variants of the WG94 used in off-highway vehicles and industrial machinery. The part interfaces directly with the HOUSING (4661301022) and is secured using a CYLINDRICAL PIN (0631306174) for precise alignment. For identification purposes, the TYPE PLATE (0769123894) should be referenced to confirm transmission series compatibility before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101013 | TRANSMISSION HOUSING | Encloses and supports internal gear sets and shafts |
| 4661301022 | HOUSING | Provides mounting points for output assembly |
| 0631306174 | CYLINDRICAL PIN | Aligns and secures housing components |
| 0769123894 | TYPE PLATE | Identifies transmission model and serial number |
| 0750100022 | SCREW PLUG | Seals hydraulic passages in the valve body |
| 4660201008 | SCREW PLUG | Closes oil gallery access ports |
| 0636100117 | SCREW PLUG | Prevents fluid leakage from pressure ports |
| 0501211384 | VALVE | Regulates hydraulic flow for shift timing |
| 0732042156 | COMPRESSION SPRING | Provides return force for valve spools |
| 0636100820 | SCREW PLUG | Seals low-pressure circuit openings |
