Overview
The ZF 4616.101.059 TRANSMISSION HOUSING is the primary structural casing for the WG 65 series, serving as the rigid foundation that encloses the gear train, clutch packs, and hydraulic valve body. As an OEM genuine part, it ensures precise alignment of internal components under high torque loads. The SKU 4616.101.059 is machined from high-strength cast iron to withstand continuous vibration and thermal expansion in heavy-duty industrial drivetrains. This housing also integrates oil galleries that direct pressurized fluid for clutch actuation and lubrication, making it critical for overall transmission integrity.
Symptoms of Failure
- External oil seepage at mating surfaces – Cracks or porosity in the housing allow transmission fluid to escape, often visible as drips near the bell housing or PTO mounting points.
- Gear engagement hesitation or slipping – Warpage or internal fracture shifts bearing bores out of spec, causing misalignment that leads to delayed shifts or torque loss under load.
- Unusual metallic grinding noises – A compromised housing can allow gear teeth to contact the casing wall, producing a distinct scraping sound during acceleration or deceleration.
- Contaminated fluid from debris ingress – Cracks in the housing permit dirt and moisture entry, which accelerates wear on internal seals and clutches.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.101.059 |
| Material | EN-GJL-250 Gray Cast Iron |
| Weight | 38.5 kg (84.9 lbs) |
| Overall Length | 620 mm |
| Overall Width | 410 mm |
| Overall Height | 380 mm |
| Bolt Hole Pattern | 12-point M12 x 1.75 |
| OEM Reference | ZF 4616.101.059 |
Compatibility
This housing is engineered for the ZF WG 65 series, which includes models such as the WG65, WG80, WG120, WG150, WG180, and WG200. It fits all variants within the WG 65 family that share the same bell housing bolt pattern and main case geometry. Always verify the casting number on your existing housing before ordering to ensure interchangeability with your specific transmission model.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636011038 | HEXAGON SCREW | Secures the housing to the bell housing flange |
| 0636011118 | HEXAGON SCREW | Fastens the rear cover to the housing |
| 0636016015 | HEXAGON SCREW | Mounts the valve body inside the housing |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals the oil pump cavity within the housing |
| 0636304019 | SCREW PLUG | Closes the oil drain port in the housing |
| 0634801152 | SEALING RING | Prevents leakage at the housing-to-adaptor joint |
| 0732611049 | FILTER INSERT | Traps debris in the housing’s internal oil circuit |
| 0634303718 | O-RING | Seals the housing’s pressure tap port |
| 0636015114 | HEXAGON SCREW | Attaches the PTO cover to the housing |
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