Overview
The ZF 4616.101.140 TRANSMISSION HOUSING is a structural core component engineered for the WG 65 series. This OEM genuine part encloses the planetary gear sets, valve body, and torque converter assembly, providing precise alignment and load-bearing support under high-torque conditions. As the main casing, it absorbs vibrational stress and maintains hydraulic circuit integrity. The SKU 4616.101.140 is machined to exact ZF tolerances, ensuring seamless integration with the clutch packs and oil pump channels. Without this housing, the transmission cannot maintain internal pressure or gear engagement.
Symptoms of Failure
- Oil leaks at the bell housing seam: Cracks or porosity in the 4616.101.140 housing cause transmission fluid to weep from the mating surfaces, leading to low fluid levels and eventual overheating.
- Gear slipping under load: Warpage or bolt-hole elongation disrupts the alignment of the valve body and clutch drums, resulting in delayed engagement or random gear disengagement during acceleration.
- Unusual metallic grinding noises: Internal bearing bores wearing out inside the housing allow shaft runout, producing a rhythmic scraping sound that worsens with RPM.
- Contaminated fluid from debris: Fractured housing fragments can break loose and circulate through the oil passages, clogging the filter and damaging the torque converter.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.101.140 |
| Material | High-strength aluminum alloy (A356-T6) |
| Weight | 18.4 kg (40.6 lbs) |
| Length | 520 mm |
| Width | 380 mm |
| Height | 290 mm |
| OEM Reference | ZF 4616.101.140 |
| Bolt Torque Spec | 85 Nm (63 ft-lbs) |
Compatibility
This housing is specifically designed for the ZF WG 65 series transmissions. It also fits select variants of the WG180, WG200, and WG250 models where the bell housing pattern and pump mounting flange dimensions match. Always verify the casting number on your original housing before installation. The 4616.101.140 is not backward-compatible with earlier WG 50 series units due to different bolt hole spacing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636011118 | HEXAGON SCREW | Secures housing to bell housing flange |
| 4616301304 | HOUSING | Intermediate casing for clutch pack assembly |
| 4616301309 | HOUSING | Rear cover housing for output shaft support |
| 0636011038 | HEXAGON SCREW | Mounts valve body to main housing |
| 0636016015 | HEXAGON SCREW | Fastens oil pan to housing |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals hydraulic passages between housings |
| 0636304019 | SCREW PLUG | Closes oil drain port in housing |
| 0634801152 | SEALING RING | Prevents leaks at housing-to-converter joint |
| 0732611049 | FILTER INSERT | Traps debris inside housing oil gallery |
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