Overview
The ZF 4616.101.139 TRANSMISSION HOUSING is the primary structural casing for the WG65 series, serving as the central enclosure that contains the planetary gear sets, clutch packs, and hydraulic circuits. As an OEM genuine part, it provides the precise dimensional tolerances required to maintain correct shaft alignment and oil gallery integrity. The SKU 4616.101.139 is specifically engineered to withstand the torsional loads and thermal expansion cycles typical of heavy-duty industrial transmissions, ensuring that all internal components remain securely positioned under high torque conditions.
Symptoms of Failure
- External oil seepage from mating surfaces: Cracks or porosity in the housing can cause transmission fluid to leak around the bell housing or valve body interface, often visible as drips after extended operation.
- Persistent gear engagement noise: Warpage or bearing bore wear in the housing leads to misalignment of the countershaft, producing a distinct whining or grinding sound during gear shifts under load.
- Intermittent clutch slip or delayed shifts: Internal cracks that compromise oil passageways reduce hydraulic pressure to the clutch packs, causing erratic engagement or complete loss of drive in specific gears.
- Contaminated fluid with metallic debris: Housing fractures can allow wear particles from the gear train to circulate, accelerating damage to the 4616105416: VALVE and 0501319251: SOLENOID VALVE.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.101.139 |
| Material | High-grade aluminum alloy (A356-T6) |
| Dry Weight | 18.4 kg (40.6 lbs) |
| Overall Length | 485 mm |
| Overall Width | 320 mm |
| Overall Height | 275 mm |
| Bolt Hole Pattern | 12-point, M10 x 1.5 |
| OEM Reference | ZF 4616.101.139 |
Compatibility
This housing is designed for the ZF WG65 series, which includes the WG65, WG80, WG100, WG120, WG150, WG180, and WG200 models. It is also compatible with certain WG250 variants that share the same bell housing bolt pattern and oil pump mounting geometry. Always verify the casting number on your existing housing before ordering, as later revisions of the WG200 and WG180 may use a different oil cooler port configuration.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105416 | VALVE | Regulates hydraulic flow to clutch packs |
| 0501319251 | SOLENOID VALVE | Electro-hydraulic shift control |
| 0636302013 | SCREW PLUG | Seals oil passages in housing |
| 0634801038 | SEALING RING | Prevents fluid bypass at joints |
| 4616305078 | CONSOLE | Mounts transmission to vehicle frame |
| 0636010047 | HEXAGON SCREW | Secures housing to bell housing |
| 0636101020 | CAP SCREW | Fastens valve body to housing |
| 0630001010 | WASHER | Distributes load under fasteners |
| 0637006015 | HEXAGON NUT | Locks housing bolts in place |
| 0637842523 | SCREW-IN SLEEVE | Aligns oil cooler lines to housing |
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