Overview
The ZF 4657.101.042 TRANSMISSION HOUSING serves as the central structural core for the WG210 series, enclosing the planetary gear sets and valve body while maintaining precise alignment under high torque loads. As an OEM genuine part, SKU 4657.101.042 is machined from high-strength aluminum alloy to withstand thermal expansion and vibration fatigue in heavy-duty commercial transmissions. This housing interfaces directly with the 4657201028: HOUS.FRONT SECT and the 4657201013: HOUSING REAR PART to form a sealed, rigid assembly that supports all rotating components.
Symptoms of Failure
- External oil seepage at mating flanges: Cracks or porosity in the housing allow ATF to escape, often visible as wet spots near the bell housing or rear seal area. This is a common “ZF transmission housing oil leak” issue.
- Gear engagement hesitation or slipping: Distortion of the housing bore shifts gear center distances, causing intermittent clutch pack slip under load—frequently searched as “WG210 transmission slipping symptoms”.
- Abnormal whining or grinding noise: Worn bearing bores within the housing create misalignment, producing a metallic whine that intensifies with RPM, often reported as “ZF transmission housing noise”.
- Contaminated fluid from debris ingress: Housing cracks allow road grit or moisture to enter, leading to premature wear of internal components and dark, burnt-smelling oil.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.101.042 |
| Material | Aluminum Alloy (A356-T6) |
| Overall Length | 485 mm |
| Overall Width | 320 mm |
| Overall Height | 280 mm |
| Weight | 14.2 kg (31.3 lbs) |
| OEM Reference | ZF 4657.101.042 |
| Bolt Torque Spec | 45 Nm (M10 bolts) |
| Seal Surface Finish | Ra 0.8 µm |
Compatibility
This housing is engineered for the ZF WG210 series and is also compatible with the WG180, WG200, and WG220 transmission models that share the same bolt pattern and main case architecture. It replaces OEM part 4657.101.042 and is not backward-compatible with older WG150 or WG160 units without adapter modifications. Always verify the casting number on your original housing before ordering.
During installation, ensure the 0631306792: CYLINDRICAL PIN is correctly aligned to locate the housing sections, and use the specified 0636100801: CAP SCREW for secure fastening. Additional sealing components such as the 4656301023: GASKET and 4656301048: OIL FEED.HOUSG. are recommended for a complete rebuild.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201028 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201013 | HOUSING REAR PART | Rear section of the transmission housing |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for housing sections |
| 4656301148 | FIXING PLATE | Secures internal components |
| 4657301034 | SCREEN SHEET | Filter screen for oil circuit |
| 4657301035 | SCREEN SHEET | Secondary filter screen |
| 0636100803 | CAP SCREW | Alternate fastener for housing |
| 4656301048 | OIL FEED.HOUSG. | Oil feed tube housing |
| 4656301023 | GASKET | Sealing gasket for mating surfaces |
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