Overview
The ZF 4657.183.027 LOOSE PARTS kit is a critical service component designed specifically for the WG 210 Series transmission. This genuine OEM assembly contains the essential hardware and small components required to secure and align internal transmission sections during rebuilds or major repairs. Positioned at the interface between the main housing and the front/rear sections, this kit ensures proper clamping force and alignment of the planetary gear sets. The SKU 4657.183.027 is factory-sealed and includes all necessary fasteners and locating elements to restore factory tolerances. When paired with a new TRANSMISSION HOUSING, this loose parts set eliminates the guesswork of sourcing individual bolts and pins.
Symptoms of Failure
- Transmission oil seepage at housing joints: Worn or missing loose parts in the 4657.183.027 kit can cause uneven clamping, leading to slow oil leaks between the HOUS.FRONT SECT and the main body.
- Gear slipping under load in WG210 units: If the fasteners lose torque, the HOUSING REAR PART may shift, misaligning clutch packs and causing intermittent power loss.
- Abnormal vibration or driveline noise: A loose CYLINDRICAL PIN from this kit can allow rotational play, producing a distinct knocking sound during gear changes.
- Hard shifting or delayed engagement: Degraded hardware in the loose parts set can alter the axial clearance of the output shaft, resulting in sluggish hydraulic response.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.183.027 |
| OEM Reference | ZF WG210 Series |
| Material Composition | Steel (fasteners), hardened alloy (pins) |
| Estimated Weight | 0.45 kg (1.0 lb) |
| Dimensions (Kit) | 150 x 100 x 40 mm |
| Included Components | Bolts, pins, washers, retaining clips |
| Torque Specification | Refer to ZF service manual for WG210 |
Compatibility
This genuine ZF 4657.183.027 LOOSE PARTS kit is engineered for the WG 210 Series transmission family. It is also compatible with select models in the WG180, WG200, and WG220 series that share the same housing interface design. The kit directly replaces the original loose hardware in units where the TRANSMISSION HOUSING has been replaced or the transmission has been disassembled for overhaul. Always verify your transmission serial number against ZF’s application guide to confirm fitment for non-WG210 variants.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201012 | HOUSING REAR PART | Rear section supporting output assembly |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | Fastener for housing attachment |
| 4656301148 | FIXING PLATE | Retainer for internal components |
| 4657301032 | SCREEN SHEET | Filter mesh for oil circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen |
| 0636100803 | CAP SCREW | Alternate fastener for rear housing |
| 4681301040 | OIL FEED.HOUSG. | Lubrication supply housing |
