Overview
The ZF 4108.303.067 COVER is a critical OEM genuine component designed to seal and protect the internal mechanisms of heavy-duty construction machinery transmissions. This cover sits on the upper housing assembly, acting as a barrier against contaminants while maintaining proper oil pressure within the gearbox. The SKU 4108.303.067 is precision-engineered to ZF’s exacting tolerances, ensuring a secure fit that prevents lubricant loss and debris ingress. It is commonly found in off-highway equipment such as wheel loaders, graders, and dump trucks, where it interfaces directly with the 4108101031: HOUSING and the 4108303155: HOUSING to form a sealed transmission chamber.
Symptoms of Failure
- Oil leaks around the transmission cover: When the 4108.303.067 COVER warps or its gasket degrades, you may notice drips or wet spots on the housing, leading to low fluid levels and potential overheating.
- Contaminated transmission fluid: A cracked or loose cover allows dirt and moisture to enter the gearbox, causing accelerated wear on clutches and bearings—often flagged during routine oil analysis.
- Unusual whining or grinding noises: If the cover fails to maintain internal pressure, gear lubrication drops, resulting in audible metal-on-metal contact during operation.
- Erratic shifting or gear slippage: Loss of hydraulic pressure from a compromised cover can cause delayed engagement or slipping in ZF WG-series transmissions under load.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4108.303.067 |
| Material | Die-cast aluminum alloy with corrosion-resistant coating |
| Weight | Approx. 1.2 kg (2.65 lbs) |
| Dimensions (L x W x H) | 280 mm x 180 mm x 45 mm |
| OEM Reference | ZF 4108.303.067 (Genuine) |
| Mounting Hardware | Requires 0636302015: SCREW PLUG and 0630361037: SEALING CAP for proper installation |
Compatibility
This cover is engineered for ZF transmission models commonly used in construction machinery, including the WG180, WG200, and WG210 series. It also fits select variants of the Ergopower and Ecolite gearboxes found in mid-to-large wheel loaders and telehandlers. Always verify your transmission serial number against the OEM parts catalog to ensure correct fitment. For complete assembly, pair this cover with the 4108108019: INTERM.GEARBOX and secure all fasteners with the appropriate 0636302015: SCREW PLUG to prevent leaks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101031 | HOUSING | Main transmission housing that encloses gear sets |
| 4108303155 | HOUSING | Secondary housing for clutch pack assembly |
| 0636302015 | SCREW PLUG | Seals oil passages and drain ports |
| 0630361037 | SEALING CAP | Protects sensor or filler openings |
| 0730361010 | SEALING CAP | Alternate cap for high-pressure ports |
| 0736305007 | SCREW PLUG | Magnetic plug for ferrous debris collection |
| 0634801165 | SEALING RING | Copper gasket for leak-proof joints |
| 0730365280 | TYPE PLATE | Identification plate with transmission specs |
| 0631311009 | GROOVED STUD | Alignment pin for precise cover mounting |
| 4108108019 | INTERM.GEARBOX | Intermediate gearbox for power take-off |
