Overview
The ZF 4657.201.154 HOUS.FRONT SECT is a precision-machined aluminum housing section that forms the forward structural boundary of the WG210 series transmission. This OEM genuine component encloses the torque converter and pump assembly, providing critical alignment for the input shaft and bearing supports. As a front section housing, it directly interfaces with the main TRANSMISSION HOUSING to create a sealed, pressurized oil gallery. The part number SKU 4657.201.154 is engineered to ZF’s exacting tolerances, ensuring a leak-free fit and consistent gear engagement under heavy industrial loads.
Symptoms of Failure
- Front-end oil seepage or puddles — A cracked or warped HOUS.FRONT SECT often causes transmission fluid to weep from the bellhousing area, especially after thermal cycling.
- Torque converter misalignment — Worn mounting surfaces lead to a distinct shudder or vibration during low-speed engagement, often misdiagnosed as a failing converter.
- Premature bearing noise — If the front section loses its dimensional integrity, the input shaft bearing loses support, producing a rhythmic whine that intensifies with RPM.
- Intermittent gear engagement — A compromised housing can allow the pump to cavitate, resulting in delayed or harsh shifts under load.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.201.154 |
| Material | Aluminum Alloy (A356-T6) |
| Weight (approx.) | 4.2 kg (9.3 lbs) |
| Overall Length | 245 mm |
| Mounting Bolt Pattern | 6x M12 on 180 mm PCD |
| Seal Bore Diameter | 85.0 mm ±0.02 |
| OEM Reference | ZF 4657.201.154 |
Compatibility
This front section housing is primarily designed for the WG 210 Series transmission family. Based on its structural design and bolt pattern, it is also compatible with the WG180, WG200, and WG250 models when used with the corresponding HOUSING REAR PART and HOUSING REAR SECTION. For proper assembly, always pair this part with the CYLINDRICAL PIN to ensure dowel alignment during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101058 | TRANSMISSION HOUSING | Main structural body of the transmission |
| 4657201155 | HOUSING REAR PART | Rear section for output shaft support |
| 4657298094 | HOUSING REAR SECTION | Extended rear housing for planetary gears |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Fastener for housing joint |
| 4656301148 | FIXING PLATE | Secures internal oil passages |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | High-torque bolt for housing flange |
| 4656301048 | OIL FEED.HOUSG. | Pressurized oil supply conduit |
