Overview
The ZF 4616.308.102 SEALING CAP is a critical OEM genuine component designed for the WG 65 series transmission. This precision-engineered cap seals the output shaft housing, preventing fluid contamination and maintaining hydraulic pressure within the gearbox. Positioned at the rear of the transmission assembly, it interfaces directly with the 4616105415: OUTPUT shaft and the 4616303144: OUTPUT FLANGE. The SKU 4616.308.102 ensures a factory-tight fit, eliminating leaks that can compromise drivetrain performance in heavy-duty industrial applications.
Symptoms of Failure
- Oil seepage around the output flange: A worn sealing cap allows transmission fluid to escape, leaving visible wet spots on the 4616101094: TRANSMISSION HOUSING.
- Gear engagement hesitation: Loss of hydraulic pressure from a degraded seal causes delayed shifting or slipping under load.
- Contaminated fluid: A failed cap permits dirt and moisture ingress, leading to accelerated wear on internal components like the 0636011038: HEXAGON SCREW fasteners.
- Vibration at the output shaft: Loose sealing can create misalignment, resulting in driveline shudder during operation.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4616.308.102 |
| Material | Nitrile rubber (NBR) with steel insert |
| Outer Diameter | 85 mm |
| Inner Diameter | 62 mm |
| Height | 12 mm |
| Weight | 0.04 kg |
| OEM Reference | ZF 4616.308.102 |
| Operating Temperature | -40°C to +120°C |
Compatibility
This sealing cap is engineered for the ZF WG 65 series, but it also fits select models in the WG180 and WG200 families due to shared output housing dimensions. It is commonly used in WG65, WG180, and WG200 transmissions found in construction vehicles, agricultural machinery, and material handlers. Always verify fitment with your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105415 | OUTPUT | Transfers torque from gearset to driveshaft |
| 4616303144 | OUTPUT FLANGE | Connects output shaft to driveline |
| 4616101094 | TRANSMISSION HOUSING | Encloses and protects internal gears |
| 0636011038 | HEXAGON SCREW | Secures housing and flange assemblies |
| 0636011118 | HEXAGON SCREW | Fastens output flange to shaft |
| 0636016015 | HEXAGON SCREW | Mounts transmission to chassis |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals fluid passages in valve body |
| 0732611049 | FILTER INSERT | Removes debris from hydraulic fluid |
| 0634303718 | O-RING | Seals output flange connection |
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