Overview
The ZF 4657.185.044 ACCESSORIES component is a critical mounting and alignment fixture engineered specifically for the WG210 series transmission assembly. This OEM genuine part ensures precise positioning of internal sub-assemblies within the gearbox housing, directly influencing shift quality and torque transfer stability. As an integral accessory, it interfaces with the main casing and supports the structural integrity of the powertrain. The SKU 4657.185.044 is manufactured to ZF’s exacting tolerances, guaranteeing a seamless fit when paired with the TRANSMISSION HOUSING and the HOUS.FRONT SECT. Without this accessory, the transmission’s internal clearances cannot be maintained, leading to premature wear on adjacent components.
Symptoms of Failure
- Persistent oil seepage at the housing joint: When the 4657.185.044 accessory loses its sealing integrity, transmission fluid escapes between the HOUSING REAR PART and the main casing, creating visible drips under the vehicle.
- Intermittent gear engagement hesitation: A worn accessory causes micro-movement of the shift linkage, resulting in delayed or rough engagement when shifting from neutral to drive.
- Abnormal vibration during load cycles: Degraded mounting points allow the HOUSING REAR SECTION to shift slightly under torque, transmitting vibration through the driveline at highway speeds.
- Increased operating noise from the bell housing area: Loose fitment of the accessory produces a metallic rattle or knocking sound during acceleration, particularly in WG210 series units.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.185.044 |
| Material | High-grade aluminum alloy (EN AC-42100) |
| Weight | 0.85 kg (1.87 lbs) |
| Overall Length | 142 mm |
| Mounting Hole Pitch | 98 mm (center-to-center) |
| Surface Treatment | Clear anodized per ZF spec 5.3.1 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This OEM accessory is designed for the ZF WG210 series but also fits select models in the WG180, WG200, and WG250 families when used with the correct CYLINDRICAL PIN and CAP SCREW kit. It is directly compatible with all WG210 variants produced after 2015. For earlier WG200 units, verify the housing flange pattern matches the accessory’s mounting geometry. The part is not interchangeable with WG300 or higher series transmissions without additional adapter plates.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201170 | HOUSING REAR PART | Rear housing segment for output shaft |
| 4657298102 | HOUSING REAR SECTION | Complete rear housing assembly |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating |
| 0636100801 | CAP SCREW | M10 fastening bolt for accessory |
| 4656301148 | FIXING PLATE | Retention plate for accessory mounting |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M12 bolt for rear housing |
