Overview
The ZF 4657.201.179 HOUSING REAR PART is a critical structural component engineered for the WG210 series automatic transmission. This OEM genuine part encloses the rear planetary gear set and output shaft assembly, providing precise alignment and load-bearing support within the transmission casing. As a rear housing section, it seals the drivetrain’s hydraulic circuits and protects internal components from contamination. The SKU 4657.201.179 is a direct replacement for original equipment, ensuring factory-specified tolerances and durability. When paired with the 4657101086 TRANSMISSION HOUSING, it completes the main structural envelope of the WG210 unit.
Symptoms of Failure
- Rear housing oil leaks: Cracks or gasket degradation at the rear mating surface cause transmission fluid to seep from the bellhousing area, often leaving puddles under the vehicle.
- Output shaft misalignment: Warpage or wear in the housing bore leads to driveline vibration and premature bearing failure, especially during acceleration.
- Gear engagement hesitation: Internal hydraulic pressure loss from a compromised rear housing can delay clutch pack application, resulting in slipping between gears.
- Contaminated transmission fluid: A fractured housing allows debris ingress, which accelerates wear on the 4657201176 HOUS.FRONT SECT and valve body components.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.201.179 |
| Material | High-grade aluminum alloy (A356-T6) |
| Weight | 4.2 kg (9.26 lbs) |
| Dimensions (L x W x H) | 320 mm x 180 mm x 95 mm |
| OEM Reference | ZF 4657.201.179 |
| Surface Treatment | Anodized corrosion protection |
| Bolt Torque Spec | 45 Nm (33 ft-lbs) with 0666790033 SURFACE SEALING COMPOUND |
Compatibility
This rear housing is specifically designed for the ZF WG210 series, but it also fits WG180, WG200, and WG211 models due to shared bolt patterns and output shaft dimensions. It is not compatible with WG120 or WG150 series transmissions. For complete assembly, combine with the 4657298110 HOUSING REAR SECTION for dual-section configurations. Always verify housing casting numbers before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101086 | TRANSMISSION HOUSING | Main casing for gear train support |
| 4657201176 | HOUS.FRONT SECT | Front section housing for torque converter |
| 0666790033 | SURFACE SEALING COMPOUND | Gasket sealant for leak-proof joints |
| 4657298110 | HOUSING REAR SECTION | Alternate rear housing variant |
| 0636115293 | 螺栓 | Mounting bolt for housing attachment |
| 0634313603 | O-RING | Hydraulic seal for oil passages |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise assembly |
| 0636100801 | CAP SCREW | Fastener for cover plates |
| 4656301148 | FIXING PLATE | Retainer for bearing preload |
| 4657301034 | SCREEN SHEET | Filter mesh for oil sump |
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