Overview
The ZF 4657.183.366 LOOSE PARTS set is a critical OEM genuine service kit designed specifically for the WG 210 series transmission. This assembly contains the internal fasteners, seals, and positioning elements required to secure the main housing sections during a rebuild or overhaul. The SKU 4657.183.366 directly replaces the original factory loose hardware, ensuring that all clamping forces and alignment tolerances are restored to factory specifications. Without this kit, the structural integrity of the transmission housing assembly is compromised, leading to misalignment of the gear train and potential oil path failures.
Symptoms of Failure
When the 4657.183.366 LOOSE PARTS begin to fail or are not replaced during a rebuild, operators typically encounter these specific issues:
- External oil seepage at housing joints – Worn or missing fasteners allow the TRANSMISSION HOUSING to separate slightly, creating oil leaks that appear as drips under the bell housing.
- Intermittent gear slipping under load – Loose hardware between the HOUS.FRONT SECT and the HOUSING REAR PART causes shaft end-play, resulting in clutch pack disengagement during torque application.
- Abnormal vibration during shifting – Degraded CYLINDRICAL PIN alignment within the loose parts set leads to gear train oscillation, felt as a low-frequency shudder in the driveline.
- Increased operating noise from the transmission case – Missing or fatigued retaining components allow the housing sections to resonate, producing a distinct metallic rattle at idle.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.183.366 |
| OEM Reference | ZF 4657.183.366 |
| Material Composition | Steel (fasteners), Nitrile rubber (seals) |
| Weight (estimated) | 0.85 kg (1.87 lbs) |
| Dimensions (packaged) | 180 mm x 120 mm x 40 mm |
| Application | WG 210 series internal hardware |
| Thread Pitch (primary bolts) | M10 x 1.5 |
| Torque Specification | 45 Nm (33 ft-lbs) dry |
Compatibility
This OEM genuine loose parts kit is engineered for the ZF WG 210 series transmission. Based on the part type and housing interface geometry, it is also compatible with the following ZF models that share the same housing architecture: WG 180, WG 200, WG 211, and WG 220. The 4657.183.366 set is specifically required when replacing the TRANSMISSION HOUSING or when performing a full split-case rebuild on any of these units. Always verify the housing casting numbers before installation to ensure correct fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101075 | TRANSMISSION HOUSING | Main structural case for gear train |
| 4657201151 | HOUS.FRONT SECT | Front section of the transmission case |
| 4657201160 | HOUSING REAR PART | Rear section of the transmission case |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | Fastener for housing attachment |
| 4656301148 | FIXING PLATE | Retains internal components in position |
| 4657301032 | SCREEN SHEET | Filter screen for oil return circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for sump |
| 0636100803 | CAP SCREW | Fastener for valve body mounting |
| 0750301003 | OIL FEED.HOUSG. | Oil supply channel housing |
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