Overview
The ZF 4616.301.200 COVER is a critical sealing and structural component engineered specifically for the WG 65 series transmission. Positioned on the rear or intermediate housing section, this OEM genuine part encloses the internal gearset and hydraulic circuits, protecting them from contamination while maintaining proper oil pressure. The SKU 4616.301.200 is precision-machined to ZF’s exacting tolerances, ensuring a leak-free interface with the 4616105415 OUTPUT assembly and the 4616101094 TRANSMISSION HOUSING. Without this cover, the transmission cannot retain lubrication or sustain the hydraulic integrity required for reliable power transfer.
Symptoms of Failure
- External oil seepage around the rear housing: A worn or cracked 4616.301.200 cover allows transmission fluid to escape, often visible as drips beneath the vehicle after extended operation.
- Contaminated fluid and reduced shift quality: When the cover loses its seal, dirt and moisture enter the system, causing sluggish or harsh gear engagements.
- Audible whining or grinding from the output area: A loose or damaged cover can misalign the 4616303144 OUTPUT FLANGE, leading to bearing noise and premature wear.
- Low hydraulic pressure warnings: Internal fluid bypass past the cover gasket reduces system pressure, triggering fault codes in electronic controls.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.301.200 |
| Material | Die-cast aluminum alloy (A380 equivalent) |
| Overall Diameter | 210 mm (8.27 in) |
| Overall Height | 45 mm (1.77 in) |
| Weight | 0.85 kg (1.87 lb) |
| OEM Reference | ZF 4616.301.200 |
| Gasket Surface | Machined flat with O-ring groove |
| Fastener Torque | 25 Nm (18.4 lb-ft) |
Compatibility
This cover is designed for the ZF WG 65 series, which includes models such as WG180, WG200, and WG250. It is also used in select WG 65 variants found in off-highway trucks, wheel loaders, and agricultural tractors. The part interfaces directly with the 4616101094 TRANSMISSION HOUSING and is secured using 0636011038 HEXAGON SCREW fasteners. Always verify your transmission serial number to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105415 | OUTPUT | Transfers torque from transmission to driveshaft |
| 4616303144 | OUTPUT FLANGE | Connects output shaft to driveline components |
| 4616101094 | TRANSMISSION HOUSING | Main structural casing for gear and valve body |
| 0636011038 | HEXAGON SCREW | Secures cover to housing (M10 x 25 mm) |
| 0636011118 | HEXAGON SCREW | Fastener for output flange retention |
| 0636016015 | HEXAGON SCREW | Mounting bolt for auxiliary brackets |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for precise cover positioning |
| 0634313118 | O-RING | Seals cover-to-housing joint |
| 0732611049 | FILTER INSERT | Traps debris in hydraulic circuit |
| 0634303718 | O-RING | Secondary seal for output flange bore |
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