Overview
The ZF 4657.183.325 LOOSE PARTS for WG210 is an OEM genuine component engineered to secure critical internal assemblies within the WG 210 series transmission. This part functions as a retention and alignment kit, ensuring that housing sections and internal shafts remain properly seated under high-torque loads. Specifically, it works in conjunction with the TRANSMISSION HOUSING (4657101082) and the HOUS.FRONT SECT (4657201166) to maintain structural integrity during gear shifts. The SKU 4657.183.325 is a direct replacement for worn or missing loose parts in the WG210 assembly, preventing axial play that can degrade shift quality over time.
Symptoms of Failure
- Intermittent gear slippage under load: When the 4657.183.325 loose parts degrade, the housing sections may shift slightly, causing the clutch packs to lose clamping force. This results in a slipping sensation during acceleration, especially in higher gears.
- Metallic rattling from the bell housing area: Worn loose parts allow the HOUSING REAR PART (4657201170) to vibrate against the main casing, producing a distinct rattle at idle or low RPM.
- Oil seepage at housing mating surfaces: As the loose parts lose their tension, the seal between the HOUSING REAR SECTION (4657298102) and the main body can open slightly, leading to slow ATF leaks. This is often mistaken for a gasket failure.
- Hard or delayed engagement from Park to Drive: Insufficient retention of the rear housing section can cause the valve body to receive incorrect feedback, delaying hydraulic pressure buildup.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number / SKU | 4657.183.325 |
| Material | Case-hardened steel with zinc-nickel plating |
| Weight | 0.42 kg (0.93 lbs) |
| Dimensions | 85 mm x 45 mm x 12 mm (kit form) |
| OEM Reference | ZF 4657.183.325 (Genuine) |
| Torque Spec | 25 Nm (18.4 lb-ft) when used with CAP SCREW (0636100801) |
Compatibility
This loose parts kit is primarily designed for the WG 210 Series transmissions, but it also fits select models in the WG180 and WG200 families due to shared housing architectures. It is directly compatible with the TRANSMISSION HOUSING (4657101082) and the HOUS.FRONT SECT (4657201166). For installations requiring rear section alignment, pair it with the HOUSING REAR PART (4657201170) or the HOUSING REAR SECTION (4657298102). Always verify your transmission model number before ordering, as WG180 units may require additional CYLINDRICAL PIN (0631306816) for alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4657201170 | HOUSING REAR PART | Rear cover for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO adapters |
| 0631306816 | CYLINDRICAL PIN | Precision alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 fastener for housing retention |
| 4656301148 | FIXING PLATE | Locking plate for loose part retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump pickup |
| 0636100803 | CAP SCREW | M12 fastener for rear housing sections |
