Overview
The ZF 4616.101.101 TRANSMISSION HOUSING is the primary structural casing for the WG65 series gearbox, serving as the rigid backbone that encloses the planetary gear sets, clutch packs, and valve bodies. This OEM genuine part, identified by SKU 4616.101.101, ensures precise alignment of internal shafts and maintains correct oil flow paths under high torque loads. Manufactured from high-strength cast iron, it withstands thermal expansion and vibration fatigue in heavy-duty industrial applications. When replacing this housing, technicians must also inspect the 4616301304: HOUSING and 4616301309: HOUSING sub-assemblies, as they mate directly to this component.
Symptoms of Failure
- Persistent oil seepage at mating flanges: Cracks or porosity in the 4616.101.101 housing allow transmission fluid to escape, often visible as wet spots near the bell housing or PTO ports.
- Abnormal gear engagement noise: Warped bearing bores cause misalignment, producing a low-frequency hum or grinding sound during shifts under load.
- Recurring clutch slip despite fresh fluid: Internal cracks disrupt oil gallery pressure, leading to delayed or incomplete clutch pack engagement in WG65 transmissions.
- Metal debris in the oil pan: Fretting wear between the housing and 0636011118: HEXAGON SCREW fasteners can generate fine metallic particles that circulate through the system.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.101.101 |
| Material | EN-GJL-250 Gray Cast Iron |
| Weight | 38.5 kg (84.9 lbs) |
| Overall Length | 620 mm |
| Overall Width | 410 mm |
| Overall Height | 385 mm |
| Bolt Hole Pattern | 12x M12 on 480 mm PCD |
| OEM Reference | ZF 4616.101.101 |
| Sealing Surface Finish | Ra 1.6 µm |
Compatibility
This transmission housing is engineered exclusively for the ZF WG65 series, including models WG65, WG80, and WG100. It is not interchangeable with WG180 or WG200 housings due to different bell housing bolt patterns and oil pump mounting locations. For proper sealing, always install a new 0630361069: SEALING CAP on the output shaft bore during reassembly. The housing accepts all standard WG65 internal components, including the main drive shaft and reverse clutch drum.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636011118 | HEXAGON SCREW | Secures housing to bell housing flange |
| 4616301304 | HOUSING | Intermediate housing for clutch pack assembly |
| 4616301309 | HOUSING | Rear housing for output shaft support |
| 0630361069 | SEALING CAP | Prevents fluid leakage at output shaft bore |
| 0636011038 | HEXAGON SCREW | Fastens oil pump cover to housing |
| 0636016015 | HEXAGON SCREW | Mounts valve body to housing interior |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals oil passage between housing sections |
| 0636304019 | SCREW PLUG | Closes oil drain port in housing |
| 0634801152 | SEALING RING | Provides static seal under screw plug head |
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