Overview
The ZF 4657.183.301 LOOSE PARTS kit is a critical service component designed specifically for the WG 210 series transmission. This assembly contains the essential fasteners, seals, and positioning elements required to secure the main housing sections during a rebuild or overhaul. As an OEM genuine part, SKU 4657.183.301 ensures that the internal clearances and structural integrity of the gearbox are maintained, preventing misalignment between the TRANSMISSION HOUSING and the HOUS.FRONT SECT. Without this specific loose parts set, the transmission cannot be properly reassembled after service.
Symptoms of Failure
- External oil seepage at housing joints: When the loose parts (bolts and pins) lose torque or corrode, oil begins to weep between the HOUSING REAR PART and the main case, leaving visible drips under the vehicle.
- Intermittent gear engagement difficulty: Worn or missing fasteners allow the HOUSING REAR SECTION to shift slightly under load, causing delayed or harsh shifting.
- Abnormal vibration during torque converter lockup: Loose housing sections create micro-movements that transmit as low-frequency vibrations through the driveline.
- Increased internal contamination: Failed seals within the loose parts kit allow debris to bypass the filter, accelerating wear on planetary gearsets.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.183.301 |
| Material Composition | Steel alloy (fasteners) / Nitrile rubber (seals) |
| Weight (estimated) | 0.45 kg (1.0 lb) |
| OEM Reference | ZF 4657.183.301 |
| Thread Pitch (primary bolt) | M10 x 1.5 |
| Torque Specification | 45 Nm (33 ft-lb) dry |
Compatibility
This loose parts kit is engineered for the ZF WG 210 series, but it also shares mounting geometry with the WG180 and WG200 transmissions due to common housing flange patterns. It is compatible with all WG210 variants (WG210, WG210A, WG210C) manufactured after 2005. For older units, verify the CYLINDRICAL PIN alignment before installation. The kit does not fit the WG120 or WG150 series.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306816 | CYLINDRICAL PIN | Aligns housing sections during assembly |
| 0636100801 | CAP SCREW | Secures front housing to main case |
| 4656301148 | FIXING PLATE | Locks bearing preload adjustment |
| 4657301032 | SCREEN SHEET | Coarse filtration for oil pump intake |
| 4657301033 | SCREEN SHEET | Fine mesh filtration for valve body |
| 0636100803 | CAP SCREW | Fastens rear housing section |
