Overview
The ZF 4661.185.022 ACCESSORIES for WG94 is a critical OEM genuine component designed to support the hydraulic and mechanical integrity of the WG 94 Series transmission. This accessory assembly acts as a mounting interface and fluid routing element, ensuring proper alignment and pressure distribution within the gearbox housing. The SKU 4661.185.022 is engineered to exact ZF tolerances, reducing vibration and preventing premature wear on adjacent assemblies. It integrates directly with the 4661101036 HOUSING and the 4661301094 HOUSING to form a sealed, stable foundation for the valve body and clutch pack.
Symptoms of Failure
- Hydraulic fluid seepage around the housing interface: When the 4661.185.022 accessory degrades, you may notice oil weeping from the joint between the main case and the accessory cover, especially during high-load operation.
- Erratic gear engagement or delayed shifts: A worn accessory can cause inconsistent pilot pressure, leading to harsh or slipping shifts in forward and reverse gears.
- Metallic rattling from the transmission bell housing: Loose fitment due to a damaged 0631306174 CYLINDRICAL PIN can create audible noise and accelerate wear on the accessory itself.
- Intermittent loss of torque converter lockup: A failing accessory may disrupt the oil gallery that supplies the lockup clutch, causing intermittent shudder or RPM flare.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4661.185.022 |
| Material | Die-cast aluminum alloy (EN AC-44100) |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 145 mm x 90 mm x 55 mm |
| Surface Finish | Anodized, corrosion-resistant |
| Mounting Type | Bolt-on with dowel pin alignment |
| OEM Reference | ZF 4661.185.022 |
Compatibility
This accessory is primarily designed for the ZF WG 94 Series, including the WG94, WG120, WG150, WG180, and WG200 models. It is also compatible with select off-highway and marine variants that share the same housing footprint. Always verify the presence of the 0769123894 TYPE PLATE on your transmission to confirm the exact series and revision before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101036 | HOUSING | Main structural case for valve body |
| 4661301094 | HOUSING | Secondary cover for clutch pack |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise assembly |
| 0769123894 | TYPE PLATE | Identification plate with model data |
| 0750100022 | SCREW PLUG | Seals oil passages in housing |
| 4660201008 | SCREW PLUG | Drain or vent plug for accessory |
| 0636100117 | SCREW PLUG | Magnetic plug for debris collection |
| 0501211384 | VALVE | Pressure regulation within accessory |
| 0732042156 | COMPRESSION SPRING | Returns valve to closed position |
| 0768409154 | SCREW PLUG | High-pressure port seal |
