Overview
The ZF 4657.101.086 TRANSMISSION HOUSING is the central structural core of the WG210 series gearbox, serving as the main casing that encloses the planetary gear sets, valve body, and hydraulic circuits. This OEM genuine part (SKU: 4657.101.086) provides the rigid framework required to maintain precise shaft alignment and oil channel integrity under heavy-duty industrial loads. As a direct replacement for the original housing, it ensures that all internal components remain properly seated and lubricated during operation.
Symptoms of Failure
- External oil seepage from housing seams: When the transmission housing develops micro-fractures or corrosion, pressurized ATF fluid leaks around the mating surfaces, often mistaken for a simple gasket failure.
- Intermittent gear engagement delay: A warped or cracked housing can misalign the valve body, causing erratic clutch pack engagement and delayed shifts in the WG210.
- Abnormal vibration during torque converter lockup: Structural fatigue in the housing allows the input shaft to wobble, transmitting harsh vibrations through the driveline at highway speeds.
- Contaminated fluid from internal debris: Spalling or cracking inside the housing releases aluminum particles into the oil, leading to premature wear of bearings and bushings.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.101.086 |
| Material | Die-cast aluminum alloy (A356-T6) |
| Weight | 14.2 kg (31.3 lbs) |
| Overall Length | 485 mm |
| Overall Width | 320 mm |
| Overall Height | 275 mm |
| Bolt Hole Pattern | M10 x 1.5, 8-point pattern |
| OEM Reference | ZF 4657.101.086 |
| Sealing Surface Finish | Ra 0.8 μm |
Compatibility
This transmission housing is engineered for the ZF WG210 series, but it also fits select variants of the WG180 and WG200 models due to shared bellhousing bolt patterns. It is not compatible with the WG120 or WG150 series without modification. Always verify the casting number on your existing housing before ordering. The housing works in conjunction with the HOUS.FRONT SECT (4657201176) and the HOUSING REAR PART (4657201179) to form the complete transmission casing assembly. For sealing, apply SURFACE SEALING COMPOUND (0666790033) to all mating faces. The HOUSING REAR SECTION (4657298110) is used in extended-length WG210 configurations.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201176 | HOUS.FRONT SECT | Front section of transmission housing |
| 0666790033 | SURFACE SEALING COMPOUND | Liquid gasket for housing joints |
| 4657201179 | HOUSING REAR PART | Rear housing section |
| 4657298110 | HOUSING REAR SECTION | Extended rear housing section |
| 0636115293 | 螺栓 | Mounting bolt for housing |
| 0634313603 | O-RING | Seal for oil passages |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636100801 | CAP SCREW | Fastener for cover plates |
| 4656301148 | FIXING PLATE | Retaining plate for internal components |
| 4657301034 | SCREEN SHEET | Oil filter screen inside housing |
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