Overview
The ZF 4657.183.383 LOOSE PARTS kit is an OEM genuine service set engineered specifically for the WG 210 Series transmission. This assembly contains the critical fasteners, seals, and positioning components required to secure the main housing sections during a rebuild or overhaul. Identified by SKU 4657.183.383, this loose parts kit ensures that the 4657101080: TRANSMISSION HOUSING remains properly aligned with the 4657201167: HOUS.FRONT SECT and the 4657201171: HOUSING REAR PART. Without these loose parts, the structural integrity of the gearbox is compromised, leading to misalignment of internal shafts and premature bearing wear.
Symptoms of Failure
When the components within the 4657.183.383 kit degrade or are lost during service, operators often encounter these specific failure modes:
- Transmission oil leaks at housing mating surfaces: Worn or missing fasteners from this loose parts set allow the 4657298103: HOUSING REAR SECTION to separate slightly, causing fluid seepage under load.
- Audible clunking during gear engagement: Loose hardware permits micro-movement between the front and rear housing sections, creating a metallic knock when torque is applied.
- Progressive gear slippage under heavy load: As the housing alignment drifts, internal clutch packs lose their precise clearances, resulting in delayed or incomplete power transfer.
- Vibration through the driveline at highway speeds: Unsecured housing sections allow the main shaft to run out of true, producing a low-frequency shudder that worsens over time.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.183.383 |
| OEM Reference | ZF Genuine (WG 210 Series) |
| Kit Contents | Fasteners, positioning pins, sealing elements |
| Material Composition | Case-hardened steel / Nitrile rubber seals |
| Weight (estimated) | 0.45 kg (1.0 lb) |
| Thread Pitch (primary bolts) | M10 x 1.5 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This LOOSE PARTS kit is primarily designed for the WG 210 transmission series. Based on the shared housing architecture, it is also compatible with the WG 180, WG 200, and WG 250 models that utilize the same bolt pattern and sealing interface. Always verify that your specific transmission serial number falls within the WG 210 family before installation. The kit works in conjunction with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to restore factory tolerances.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306816 | CYLINDRICAL PIN | Aligns housing sections during assembly |
| 0636100801 | CAP SCREW | Secures front housing to main case |
| 4656301148 | FIXING PLATE | Locks bearing preload in the rear section |
| 4657301034 | SCREEN SHEET | Filters debris from lubrication circuit |
| 4657301035 | SCREEN SHEET | Secondary filtration for oil return path |
| 0636100803 | CAP SCREW | Fastens rear housing to intermediate plate |
