Overview
The ZF 4657.101.075 TRANSMISSION HOUSING is the central structural component of the WG210 series powershift transmission. This OEM genuine part encloses the planetary gear sets, clutch packs, and hydraulic valve body, providing precise alignment and oil-tight integrity under high-torque industrial loads. As the main casing, it absorbs torsional stresses and maintains gear mesh accuracy. The SKU 4657.101.075 is machined from high-strength cast iron to ZF’s original tolerances, ensuring a direct bolt-on replacement without modification. It interfaces directly with the HOUS.FRONT SECT (4657201151) and the HOUSING REAR PART (4657201160) to form the complete transmission envelope.
Symptoms of Failure
- External oil seepage at mating surfaces: A cracked or warped housing allows transmission fluid to escape around the joint with the HOUS.FRONT SECT, leading to low fluid levels and eventual gear slipping.
- Abnormal gear engagement noise: Distortion of the housing bore causes misalignment of the countershaft, producing a whining or grinding sound during shifts under load.
- Persistent clutch pack overheating: Internal cracks restrict oil gallery flow, preventing proper cooling of the clutch discs and causing premature failure.
- Bolt hole thread stripping: Repeated thermal cycling can weaken the threads that secure the CAP SCREW (0636100801), resulting in loose fasteners and vibration.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.101.075 |
| Material | GJL-250 Cast Iron (EN 1561) |
| Weight (approx.) | 38.5 kg (84.9 lbs) |
| Overall Length | 620 mm |
| Overall Width | 410 mm |
| Overall Height | 340 mm |
| Bolt Hole Pattern | 12 x M12 on 380 mm PCD |
| OEM Reference | ZF 4657.101.075 |
| Seal Surface Finish | Ra 0.8 µm max |
Compatibility
This transmission housing is engineered for the ZF WG210 series. It is also compatible with the closely related WG180, WG200, and WG220 models that share the same bolt pattern and internal gear center distances. Always verify the casting number on your original housing before ordering. The housing works in conjunction with the CYLINDRICAL PIN (0631306816) for precise dowel alignment during reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201151 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657201160 | HOUSING REAR PART | Rear section of transmission housing |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | M12 fastener for housing joint |
| 4656301148 | FIXING PLATE | Retains oil feed components |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M10 fastener for cover plates |
| 0750301003 | OIL FEED.HOUSG. | Pressurized oil supply manifold |
| 4656301023 | GASKET | Sealing gasket for housing joint |
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