Overview
The ZF 4657.183.030 LOOSE PARTS set is a critical OEM genuine service kit designed specifically for the WG210 series transmission. This assembly group contains the essential loose hardware and small components required to secure and align internal transmission sections during a rebuild or major repair. The SKU 4657.183.030 typically includes fasteners, locating pins, and sealing elements that interface directly with the main housing structure. Without this kit, proper torque specifications and alignment tolerances cannot be maintained, leading to premature wear on adjacent assemblies. This part sits between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, ensuring a vibration-free connection across the drivetrain.
Symptoms of Failure
- Transmission oil seepage at housing joints: When the loose parts in this kit degrade or are missing, the seal between the HOUSING REAR PART and the main case fails, causing slow fluid loss. This is a common long-tail search query for “ZF WG210 oil leak at housing seam.”
- Audible rattling or knocking from the bell housing area: Worn CYLINDRICAL PIN components within the 4657.183.030 set allow lateral movement, producing a distinct metallic noise during gear changes.
- Intermittent gear engagement hesitation: Loose fasteners cause micro-shifts in the valve body alignment, leading to delayed clutch pack activation. Technicians searching for “WG210 slipping under load” often trace this to degraded loose parts.
- Increased driveline vibration at highway speeds: Missing or over-torqued hardware from this kit creates harmonic imbalances, especially when the transmission is coupled to the rear housing section.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.183.030 |
| OEM Reference | ZF 4657.183.030 |
| Material Composition | Steel alloy (fasteners) / Nitrile rubber (seals) |
| Weight (estimated) | 0.85 kg (1.87 lbs) |
| Dimensions (packaged) | 180 mm x 120 mm x 40 mm |
| Compatible Series | WG210 (primary), WG180, WG200 (secondary) |
| Torque Class | 10.9 grade bolts (where applicable) |
Compatibility
This OEM genuine loose parts kit is engineered primarily for the ZF WG210 series transmissions used in heavy-duty commercial vehicles and off-highway equipment. It also fits select WG180 and WG200 models that share the same housing bolt pattern and pin alignment geometry. The 4657.183.030 set is not backward compatible with older WG series (pre-1990) due to different thread pitches. Always verify the presence of the CAP SCREW and FIXING PLATE in your existing assembly before ordering. For units with integrated oil coolers, the OIL FEED.HOUSG. component must be inspected simultaneously.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Forward housing section for input shaft |
| 4657201013 | HOUSING REAR PART | Rear housing section for output flange |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 fastener for housing attachment |
| 4656301148 | FIXING PLATE | Retainer for bearing preload |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil return |
| 4657301035 | SCREEN SHEET | Coarse mesh filter for sump |
| 0636100803 | CAP SCREW | M12 fastener for rear housing |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil supply channel |
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