Overview
The ZF 4616.306.120 GEAR SHIFT HOUSING is a critical structural component within the WG 65 series transmission. This OEM genuine part serves as the primary enclosure for the shift fork assembly and selector mechanism, ensuring precise gear engagement and reliable hydraulic flow control. Positioned on the upper section of the main transmission casing, the housing interfaces directly with the TRANSMISSION HOUSING to create a sealed environment for internal shift components. The SKU 4616.306.120 is engineered to ZF’s exacting tolerances, providing long-term durability under heavy-duty industrial loads.
Symptoms of Failure
- External oil seepage around shift tower: A cracked or warped gear shift housing often allows transmission fluid to escape, leaving visible wet spots on the casing exterior.
- Intermittent gear engagement difficulty: Worn mounting surfaces or internal bore damage can cause the shift rail to bind, leading to hard shifting or partial engagement under load.
- Metallic rattling from shift area: Loose or broken housing mounting points allow vibration and misalignment, producing audible noise during gear changes.
- Contaminated hydraulic fluid: A compromised housing seal permits debris ingress, accelerating wear on internal valves and requiring premature filter replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4616.306.120 |
| Material | High-grade aluminum alloy (A356-T6) |
| Weight | 3.85 kg (8.5 lbs) |
| Overall Dimensions | 210 mm x 145 mm x 95 mm |
| Bolt Hole Pattern | 6x M10 threaded bores |
| OEM Reference | ZF 4616.306.120 |
| Sealing Surface Finish | Ra 0.8 µm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This gear shift housing is specifically designed for the ZF WG 65 series transmission family. While primarily intended for the WG65 model, the 4616.306.120 also fits select variants of the WG180 and WG200 series where the shift housing geometry matches. Always verify compatibility by cross-referencing your transmission’s serial number with ZF documentation. For secure installation, use the HEXAGON SCREW (0636011038) and HEXAGON SCREW (0636011118) for primary mounting, plus the HEXAGON SCREW (0636016015) for auxiliary bracket attachment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101089 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011038 | HEXAGON SCREW | M10 x 30 mm mounting bolt |
| 0636011118 | HEXAGON SCREW | M10 x 45 mm shift housing fastener |
| 0636016015 | HEXAGON SCREW | M12 x 50 mm auxiliary bracket bolt |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 0634313118 | O-RING | Seal between shift housing and main case |
| 0636304019 | SCREW PLUG | Oil drain port closure |
| 0634801152 | SEALING RING | Copper washer for plug sealing |
| 0732611049 | FILTER INSERT | Hydraulic oil filtration element |
| 0634303718 | O-RING | Filter housing seal |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
