Overview
The ZF 4657.354.021 HOUSING is a critical structural component engineered for the WG 190 and WG 210 series transmissions. This OEM genuine part serves as the primary enclosure for the gear train and hydraulic control system, ensuring precise alignment of internal shafts and bearings under high torque loads. As a central casting, it directly interfaces with the 4657101033: TRANSMISSION HOUSING to form the main structural backbone of the assembly. The SKU 4657.354.021 is machined to exacting tolerances to maintain oil gallery integrity and prevent cross-contamination between lubrication circuits. Without this housing, the transmission cannot maintain the necessary rigidity for proper gear meshing or clutch pack engagement.
Symptoms of Failure
- Oil leaks at the main housing seam: When the ZF 4657.354.021 HOUSING develops cracks or warpage, transmission fluid seeps from the joint between the housing and the 4657201027: HOUS.FRONT SECT, leaving visible puddles under the vehicle.
- Gear slipping under load: A distorted housing allows the 4657201012: HOUSING REAR PART to misalign, causing intermittent gear disengagement during acceleration.
- Abnormal vibration or whining noise: Worn bearing bores within the housing create excessive radial play, producing a low-frequency hum that intensifies with road speed.
- Contaminated hydraulic fluid: Internal cracks allow debris ingress past the 0631306792: CYLINDRICAL PIN alignment points, leading to premature clutch wear.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.354.021 |
| Material | High-grade aluminum alloy (A356-T6) |
| Weight | 8.4 kg (18.5 lbs) |
| Overall Length | 485 mm |
| Overall Width | 320 mm |
| Overall Height | 210 mm |
| Bolt Hole Pattern | 12-point M10 x 1.5 |
| OEM Reference | ZF 4657.354.021 |
| Surface Treatment | Clear anodized with corrosion inhibitor |
Compatibility
This housing is specifically designed for the ZF WG 210 series, with verified fitment in the WG 190, WG 200, and WG 210 transmission models. It is also compatible with certain variants of the WG 180 series when used with the correct 4656301148: FIXING PLATE kit. The part supports both standard and high-torque output configurations found in off-highway trucks, agricultural tractors, and industrial material handlers. Always verify the serial number range on your existing housing before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural enclosure for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657201012 | HOUSING REAR PART | Rear section housing for output shaft bearing |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M10 fastener for housing bolt-up |
| 4656301148 | FIXING PLATE | Retention plate for oil pump assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for suction line |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for return line |
| 0636100803 | CAP SCREW | M12 fastener for rear housing attachment |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil distribution manifold |
