Overview
The ZF 4644.302.107 COVER is a precision-engineered OEM genuine component designed for the WG 180 and WG 200 series transmissions. This part serves as a critical sealing and protective barrier, mounted directly onto the transmission housing to shield internal hydraulic and mechanical assemblies from contaminants while maintaining proper oil pressure. As a factory-specified replacement, the SKU 4644.302.107 ensures exact fitment and durability under heavy-duty industrial loads. It interfaces seamlessly with the TRANSMISSION HOUSING (4644101234) and the TRANSMISSION HOUSING (4644301282), forming a robust enclosure that supports the entire gear train.
Symptoms of Failure
- Hydraulic oil seepage around the cover perimeter: When the 4644.302.107 gasket surface degrades, transmission fluid leaks become visible, often pooling beneath the vehicle or equipment.
- Erratic gear engagement or delayed shifting: A compromised cover can allow pressure loss, leading to inconsistent clutch pack actuation and rough transitions between forward and reverse gears.
- Contaminated transmission fluid: Cracks or warping in the cover permit dirt and moisture ingress, accelerating wear on internal components like the ADAPTER (4475280078).
- Increased operating noise or vibration: A loose or misaligned cover may cause resonance, amplifying gear whine or bearing rumble during operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4644.302.107 |
| Material | Die-cast aluminum alloy with corrosion-resistant coating |
| Overall Dimensions (L x W x H) | Approx. 320 mm x 180 mm x 45 mm |
| Weight | 1.8 kg (3.97 lbs) |
| OEM Reference | ZF 4644.302.107 (Genuine) |
| Mounting Hole Pattern | 6 x M10 bolts, 120 mm spacing |
| Operating Temperature Range | -40°C to +120°C |
| Seal Type | Integrated O-ring groove (O-ring sold separately) |
Compatibility
This cover is engineered for the ZF WG 180 and WG 200 series powershift transmissions. It is a direct fit for models including WG 180, WG 200, WG 200-2, and WG 200-3, commonly used in heavy construction equipment, mining trucks, and agricultural machinery. The 4644.302.107 also integrates with the TYPE PLATE (0730365067) for proper identification. Always verify your transmission serial number against the OEM parts catalog to confirm compatibility.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101234 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301282 | TRANSMISSION HOUSING | Alternate housing variant for WG 200 |
| 4475280078 | ADAPTER | Connects transmission to engine bellhousing |
| 0730365067 | TYPE PLATE | Identification tag with transmission specs |
| 0631311009 | GROOVED STUD | Fastener for cover mounting |
| 4644106300 | SHIFT SYSTEM | Controls gear selection mechanism |
| 4644306500 | COVER PLATE | Secondary access cover for inspection |
| 4644159300 | SHIFT SYSTEM | Alternate shift system assembly |
| 4644306560 | VALVE BLOCK | Hydraulic pressure distribution manifold |
| 4644306408 | WASHER | Sealing washer for bolt connections |
