Overview
The ZF 4657.183.319 LOOSE PARTS kit is a critical service component engineered specifically for the WG 210 series transmission. This genuine OEM assembly contains the necessary fasteners, seals, and positioning elements required to secure the transmission housing sections during rebuild or repair. The SKU 4657.183.319 is designed to interface directly with the main casing and internal support structures, ensuring proper alignment and clamping force across the gear train. Without this loose parts set, the transmission housing cannot maintain structural integrity under load, making it an essential item for any full overhaul of the WG210.
Symptoms of Failure
- Transmission oil weeping from housing seams: When the loose parts in this kit fatigue or corrode, the clamping force between the TRANSMISSION HOUSING and adjacent sections diminishes, leading to visible oil seepage along mating surfaces.
- Abnormal gear rattle or vibration during acceleration: Worn fasteners or missing positioning components allow micro-movement between the HOUS.FRONT SECT and the main body, causing misalignment of shafts and gears.
- Difficulty engaging gears or delayed shift response: A loose rear assembly can shift the bearing preload, directly affecting shift timing and engagement feel.
- Metallic debris in transmission fluid: As the HOUSING REAR PART loses its secure fit, internal components may contact the housing walls, generating fine metal particles.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.183.319 |
| Material Composition | Steel alloy with zinc-nickel plating (fasteners); nitrile rubber (seals) |
| Weight (kit) | 0.85 kg (1.87 lbs) |
| Thread Size (primary cap screws) | M10 x 1.5 |
| Torque Specification | 45 Nm ± 5 Nm |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF Friedrichshafen AG |
Compatibility
This loose parts kit is primarily validated for the WG 210 Series transmission. Based on the part geometry and fastener pattern, it is also compatible with the WG180 and WG200 series when used in conjunction with the HOUSING REAR SECTION. It is not recommended for use in WG120 or WG150 models without cross-referencing the housing bolt pattern. Always verify the presence of the corresponding rear housing section before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657201170 | HOUSING REAR PART | Rear section for output bearing retention |
| 4657298102 | HOUSING REAR SECTION | Alternate rear housing variant for extended gear sets |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M10 bolt for securing front housing section |
| 4656301148 | FIXING PLATE | Locking plate to prevent fastener loosening |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for pump intake |
| 0636100803 | CAP SCREW | M12 bolt for rear housing attachment |
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