Overview
The ZF 4657.183.407 LOOSE PARTS for WG210 is a critical service kit designed to restore the internal integrity of your ZF WG210 series transmission. This OEM genuine part, identified by SKU 4657.183.407, contains the specific loose hardware and fasteners required to secure the main housing assembly. It sits directly within the transmission casing, acting as the retention system for the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT. Without this kit, the structural alignment of the gear train is compromised, leading to premature wear on internal components.
Symptoms of Failure
When the ZF 4657.183.407 LOOSE PARTS kit wears out or is missing during a rebuild, operators will notice distinct failure modes. Look for these specific symptoms to diagnose a failing retention system:
- Transmission oil seepage at housing joints: Loose or missing fasteners cause the 4657201170: HOUSING REAR PART to separate slightly, allowing ATF to weep under pressure.
- Intermittent gear slippage under load: A loose rear section creates axial play, causing the clutch packs to lose clamping force during heavy torque application.
- Metallic rattling from the bell housing: Unsecured loose parts vibrate against the 4657298102: HOUSING REAR SECTION, producing a distinct noise at idle.
- Hard shifting or delayed engagement: Misalignment of the housing sections due to degraded fasteners alters the valve body alignment, resulting in harsh gear changes.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.183.407 |
| OEM Reference | ZF 4657.183.407 |
| Material | High-tensile steel with zinc plating |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions | Kit includes multiple fasteners; max length 45 mm |
| Thread Size | M8 x 1.25 (primary bolts) |
| Hardness Rating | Grade 10.9 |
Compatibility
This LOOSE PARTS kit is engineered specifically for the ZF WG210 series, but it also cross-references with several other ZF powershift models that share the same housing architecture. Compatible transmissions include the WG180, WG200, and WG211 series. It is essential to verify that the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT are correctly aligned before installation. The kit also supports the 4657201170: HOUSING REAR PART and the 4657298102: HOUSING REAR SECTION in these models.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306816 | CYLINDRICAL PIN | Aligns housing sections during assembly |
| 0636100801 | CAP SCREW | Secures front housing to main casing |
| 4656301148 | FIXING PLATE | Locks bearing race in position |
| 4657301032 | SCREEN SHEET | Filters debris from oil return path |
| 4657301033 | SCREEN SHEET | Secondary filtration for valve body |
| 0636100803 | CAP SCREW | Fastens rear section to main housing |
