Overview
The ZF 4657.183.106 LOOSE PARTS kit is a critical service component engineered specifically for the WG 210 Series transmission. This genuine OEM assembly contains the precise fasteners, seals, and positioning elements required to secure internal hydraulic circuits and mechanical linkages within the gearbox. Positioned at the interface between the main housing and valve body, the 4657.183.106 ensures proper clamping force and fluid isolation. When rebuilding a WG210 unit, replacing this loose parts set alongside the 4657101033: TRANSMISSION HOUSING is essential to prevent cross-threading and stress fractures in the casting. The SKU 4657.183.106 is the definitive OEM reference for this hardware package.
Symptoms of Failure
- Intermittent gear slippage under load — Worn or missing fasteners from the 4657.183.106 set can allow the valve body to shift, causing pressure loss to clutch packs. This manifests as a momentary loss of drive when climbing grades or towing.
- External oil seepage at housing joints — Degraded seals within this loose parts kit lead to fluid weeping around the mating surfaces of the 4657201027: HOUS.FRONT SECT and the main case. Look for dark residue on the bell housing.
- Abnormal metallic rattling from the transmission pan — If the 0631306792: CYLINDRICAL PIN included in this kit becomes dislodged, it can rattle inside the sump and score the 4657201012: HOUSING REAR PART.
- Erratic shift timing — Loose hardware alters the alignment of the shift rail guides, delaying engagement from neutral to drive or reverse.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.183.106 |
| Material Composition | Steel (fasteners), NBR (seals), Zinc-plated hardware |
| Kit Contents | 6x cap screws, 2x cylindrical pins, 1x fixing plate, 2x screen sheets |
| Weight (kit) | 0.42 kg (0.93 lbs) |
| Max Torque Rating | 12 Nm (for cap screws) |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 4657.183.106 |
Compatibility
This loose parts kit is dimensionally validated for the ZF WG 210 Series. It also fits the WG180, WG200, and WG250 models when used with the corresponding 4657101033: TRANSMISSION HOUSING. The kit is not backward-compatible with the earlier WG 150 series due to different bolt patterns. Always verify the housing casting number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural case for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4657201012 | HOUSING REAR PART | Rear housing supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retainer for shift rail positioning |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M8 bolt for valve body attachment |
| 4681301040 | OIL FEED.HOUSG. | Lubrication channel housing for bearings |
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