Overview
The ZF 4661.302.011 COVER is a precision-engineered OEM genuine component designed specifically for the WG 90 and WG 94 series transmissions. This cover serves as a critical sealing and protective barrier, positioned on the transmission housing to safeguard internal gear sets and hydraulic circuits from contaminants while maintaining proper oil pressure. As a factory-original part, the SKU 4661.302.011 ensures exact fitment and material integrity, matching ZF’s stringent tolerances for heavy-duty industrial applications. When installed alongside the 4661101013: TRANSMISSION HOUSING and the 4661301022: HOUSING, this cover completes the sealed assembly required for reliable power transfer in off-highway and construction equipment.
Symptoms of Failure
When the ZF 4661.302.011 cover deteriorates, operators often notice distinct warning signs. Common failure symptoms include:
- External oil seepage around the cover perimeter – leading to low fluid levels and potential gear damage.
- Gear engagement hesitation or slipping – caused by loss of hydraulic pressure due to compromised sealing.
- Contamination ingress – dirt or moisture entering the transmission, accelerating wear on internal components.
- Unusual whining or grinding noises – indicating insufficient lubrication from oil loss.
Addressing these issues promptly with the genuine 4661.302.011 cover prevents cascading failures that could require replacement of the 0631306174: CYLINDRICAL PIN or other alignment hardware.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4661.302.011 |
| Material | High-grade cast aluminum alloy |
| Overall Diameter | 210 mm (approx.) |
| Thickness | 18 mm (approx.) |
| Weight | 1.2 kg (approx.) |
| OEM Reference | ZF 4661.302.011 |
| Mounting Holes | 6 x M10 threaded |
| Seal Type | Integrated O-ring groove |
Compatibility
This cover is engineered for the WG 90 and WG 94 transmission series, which are widely used in ZF’s powershift and industrial drivelines. Based on its design and mounting pattern, the 4661.302.011 is also compatible with select variants of the WG 180 and WG 200 models where the housing interface matches. Always verify fitment by cross-referencing your transmission’s serial number with the 0769123894: TYPE PLATE to ensure correct application. For installations requiring additional sealing, consider pairing this cover with the 0750100022: SCREW PLUG or the 4660201008: SCREW PLUG to secure auxiliary ports.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101013 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4661301022 | HOUSING | Secondary housing for clutch or valve pack |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise cover positioning |
| 0769123894 | TYPE PLATE | Identification tag for transmission model |
| 0750100022 | SCREW PLUG | Seals oil drain or fill ports |
| 4660201008 | SCREW PLUG | High-pressure port sealing |
| 0636100117 | SCREW PLUG | Metric thread plug for sensor ports |
| 0501211384 | VALVE | Hydraulic flow control within transmission |
| 0732042156 | COMPRESSION SPRING | Provides tension for valve actuation |
| 0636100820 | SCREW PLUG | Low-profile plug for tight clearance areas |
