Overview
The ZF 4657.183.155 LOOSE PARTS kit is a critical service component designed specifically for the WG 210 series transmission. This OEM genuine part comprises the internal fasteners, seals, and small hardware elements that secure the main transmission assembly. Positioned within the gearbox casing, this kit ensures that the TRANSMISSION HOUSING remains properly sealed and aligned under high torque loads. The SKU 4657.183.155 is a direct replacement for worn or missing loose parts, restoring the structural integrity of the WG210 unit and preventing contamination ingress. Without these components, the transmission cannot maintain hydraulic pressure or gear alignment.
Symptoms of Failure
- Oil leaks around the housing seams: When the loose parts degrade, the HOUS.FRONT SECT and HOUSING REAR PART can separate slightly, causing transmission fluid to weep from mating surfaces.
- Intermittent gear slippage under load: Worn fasteners allow the internal components to shift, leading to inconsistent clutch pack engagement and power loss during acceleration.
- Abnormal vibration or rattle from the bell housing: Loose hardware, including the CYLINDRICAL PIN, creates play between the housing sections, generating audible noise and vibration at specific RPM ranges.
- Hard shifting or delayed engagement: As the loose parts fail, the alignment of the valve body and oil feed passages becomes compromised, resulting in sluggish gear changes.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.183.155 |
| Material | Hardened steel with zinc-plated finish |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions (L x W x H) | 120 mm x 80 mm x 30 mm |
| OEM Reference | ZF 4657.183.155 |
| Thread Pitch | M10 x 1.5 (primary fasteners) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This loose parts kit is engineered for the ZF WG 210 series transmissions. Based on the part type and housing design, it is also compatible with the following ZF models: WG180, WG200, WG211, and WG220. The kit is essential for any rebuild or overhaul of these gearboxes, as it replaces the hardware that secures the TRANSMISSION HOUSING, HOUS.FRONT SECT, and HOUSING REAR PART. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section of the housing assembly |
| 4657201013 | HOUSING REAR PART | Rear section of the housing assembly |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for housing sections |
| 0636100801 | CAP SCREW | Fastener for securing housing bolts |
| 4656301148 | FIXING PLATE | Retaining plate for internal components |
| 4657301034 | SCREEN SHEET | Filter screen for oil intake |
| 4657301035 | SCREEN SHEET | Secondary filter screen for oil return |
| 0636100803 | CAP SCREW | Fastener for valve body mounting |
| 4681301040 | OIL FEED.HOUSG. | Oil feed housing for lubrication circuit |
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