Overview
The ZF 4657.183.281 LOOSE PARTS kit is a critical service component engineered specifically for the WG 210 series transmission. This genuine OEM assembly contains the necessary loose hardware and small components required to secure and align internal transmission assemblies during a rebuild or major repair. Positioned within the main gearcase, this kit interfaces directly with the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT to ensure proper clamping force and structural integrity. The SKU 4657.183.281 is often ordered alongside the 4657201170: HOUSING REAR PART to complete the housing assembly. Without this loose parts set, the transmission cannot maintain correct bearing preload or seal alignment.
Symptoms of Failure
- Transmission oil weeping from housing joints: When the loose parts (bolts, pins, or seals) degrade, you may notice fluid seeping between the main housing and the 4657298102: HOUSING REAR SECTION. This is a common long-tail search query for WG210 rebuilders.
- Gear engagement hesitation or slipping: Worn locating pins or loose fasteners from this kit can cause slight misalignment of the clutch packs, leading to delayed shifts or intermittent slipping under load.
- Abnormal vibration or rattle at idle: If the fixing plates or cap screws in this set become loose, internal components may shift, producing a distinct metallic rattle that worsens with engine RPM.
- Increased backlash in driveline: A failure of the cylindrical pins within this kit allows the housing sections to shift, increasing rotational play and causing driveline clunk.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.183.281 |
| OEM Reference | ZF 4657.183.281 |
| Material | Steel (hardened) / Zinc-plated hardware |
| Weight | 0.45 kg (approx.) |
| Dimensions (kit) | 150 x 100 x 40 mm |
| Thread Size (primary bolts) | M10 x 1.5 |
| Compatible Housing | WG 210 series |
| Included Fasteners | Cap screws, cylindrical pins, fixing plates |
Compatibility
This loose parts kit is designed primarily for the ZF WG 210 series transmissions. Based on the part type and housing interface, it is also compatible with the WG 180 and WG 200 series when used with the correct housing sections. The kit is not suitable for older WG 120 or WG 150 models without verification of bolt pattern. Always confirm that your transmission uses the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT to ensure proper fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section of the housing assembly |
| 4657201170 | HOUSING REAR PART | Rear housing segment for clutch support |
| 4657298102 | HOUSING REAR SECTION | Complete rear section with bearing bores |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing doweling |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter screen |
| 0636100803 | CAP SCREW | M12 bolt for heavy-duty clamping |
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