Overview
The ZF 4657.183.246 LOOSE PARTS kit is a critical OEM genuine service set designed specifically for the WG 211 series transmission. This assembly group contains the essential fasteners, seals, and positioning components required to secure the main housing sections during a rebuild or overhaul. Positioned at the interface between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, this kit ensures correct clamping force and alignment. The SKU 4657.183.246 is frequently ordered alongside the HOUSING REAR PART to complete a full structural rebuild. Without this loose parts set, the transmission cannot maintain internal oil pressure or gear train alignment.
Symptoms of Failure
- External oil seepage at housing joints: When the fasteners in the 4657.183.246 kit lose torque or the included seals degrade, transmission fluid will weep from the mating surfaces between the front and rear housing sections.
- Intermittent gear slippage under load: A loose housing assembly allows the main shaft to shift axially, causing clutch packs to engage inconsistently. This symptom is often misdiagnosed as a valve body issue.
- Abnormal driveline vibration: Missing or worn CYLINDRICAL PIN components from this kit can cause the housing halves to micro-move, generating low-frequency vibration during acceleration.
- Difficulty shifting into gear: If the loose parts kit is incomplete, the housing may warp under heat, binding the selector mechanism and requiring excessive force to shift.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.183.246 |
| Kit Contents | Bolts, washers, seals, positioning pins |
| Material | Steel (fasteners), Nitrile rubber (seals) |
| Weight | 0.85 kg (1.87 lbs) |
| Thread Size (Primary) | M10 x 1.5 |
| Torque Specification | 45 Nm ± 5 Nm |
| Operating Temperature | -40°C to +120°C |
| OEM Reference | ZF 4657.183.246 |
Compatibility
This loose parts kit is engineered for the ZF WG 211 series, but its fastening geometry also applies to the WG 180 and WG 200 transmission families. The kit directly interfaces with the TRANSMISSION HOUSING (part 4657101049) and the HOUS.FRONT SECT (4657301130). It is also required when replacing the HOUSING REAR PART (4657301131). The CYLINDRICAL PIN (0631306816) included in this set is shared with the WG 250 series. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657301130 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657301131 | HOUSING REAR PART | Rear section of transmission housing |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636102489 | CAP SCREW | M10 fastener for housing flange |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 0636102463 | CAP SCREW | M8 fastener for auxiliary cover |
| 4657201133 | SCREEN SHEET | Oil filter mesh for sump |
| 0636115287 | CAP SCREW | M12 fastener for bell housing |
| 4657301065 | PLATE | Spacer plate for valve body |
