Overview
The ZF 4616.308.053 COVER is a precision-engineered OEM component designed specifically for the WG 65 series transmission. This cover serves as a critical sealing and protective barrier, mounting directly onto the main transmission housing to shield internal gear assemblies and hydraulic circuits from contaminants while maintaining proper oil pressure. As an integral part of the rear section of the WG 65, the 4616.308.053 ensures structural integrity and prevents fluid migration between chambers. When paired with a robust TRANSMISSION HOUSING, this cover forms a leak-proof enclosure essential for long-term drivetrain reliability.
Symptoms of Failure
- Persistent oil seepage around the rear bell housing: A worn or warped 4616.308.053 cover often leads to visible fluid trails, especially after extended operation under load.
- Contaminated transmission fluid: When the cover loses its seal, dirt and moisture ingress can cause premature wear, resulting in sluggish gear engagement or erratic shifting.
- Abnormal vibration or noise from the transmission tail section: A loose or cracked cover may allow internal components to shift slightly, producing a distinct humming or knocking sound during acceleration.
- Reduced hydraulic pressure warnings: Failure of this cover can compromise oil circulation, triggering dashboard alerts or performance degradation in heavy-duty applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.308.053 |
| Material | High-grade aluminum alloy (die-cast) |
| Overall Dimensions | Approx. 280 mm x 180 mm x 45 mm |
| Weight | 1.85 kg (4.08 lbs) |
| OEM Reference | ZF 4616.308.053 |
| Surface Treatment | Corrosion-resistant anodized finish |
| Bolt Pattern | 6-point symmetrical (M10 x 1.5) |
Compatibility
This genuine ZF cover is engineered primarily for the WG 65 series transmission, but its design principles extend to several heavy-duty ZF models that share similar rear housing architectures. Compatible transmissions include the WG 65, WG 80, WG 120, WG 180, and WG 200 series, where it interfaces directly with the HOUSING assembly. For installations requiring additional sealing, the HEXAGON SCREW fasteners and a secondary HOUSING component are often specified to ensure a secure, vibration-resistant fit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101066 | TRANSMISSION HOUSING | Main structural casing for gear and shaft assembly |
| 0636011118 | HEXAGON SCREW | Secures cover to housing with precise torque |
| 4616301307 | HOUSING | Intermediate support for bearing and seal alignment |
| 4616301309 | HOUSING | Rear section housing for output shaft components |
| 0636011038 | HEXAGON SCREW | Fastener for auxiliary mounting points |
| 0636016015 | HEXAGON SCREW | High-tensile bolt for critical load areas |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for precise cover positioning |
| 0634313118 | O-RING | Elastomeric seal for fluid-tight joint |
| 0636304019 | SCREW PLUG | Closes oil passages during service |
| 0634801152 | SEALING RING | Prevents leakage at threaded interfaces |
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