Overview
The ZF 4108.303.200 CLUTCH BODY is a precision-machined hydraulic component that serves as the central actuation hub within the WG100, WG130, and WG131 transmission series. This OEM genuine part directs pressurized oil flow to engage and disengage the clutch packs, directly controlling torque transfer between the engine and driveline. Located inside the main gear case, the clutch body interfaces with the TRANSMISSION HOUSING to form a sealed pressure chamber. The SKU 4108.303.200 is factory-spec for rebuilds and direct replacements in heavy-duty industrial applications.
Symptoms of Failure
- Delayed or harsh engagement: Worn clutch body bores cause internal pressure loss, leading to sluggish gear engagement or sudden, jarring shifts during operation.
- Internal oil leaks and low line pressure: Cracks or scoring on the clutch body surface allow transmission fluid to bypass seals, resulting in visible drips from the HOUSING and a drop in system pressure.
- Gear slipping under load: A deformed clutch body cannot maintain clamping force on the friction discs, causing the transmission to slip when climbing grades or hauling heavy loads.
- Metallic debris in the oil pan: Advanced wear generates fine metal particles from the clutch body, often found alongside the SCREW PLUG during oil changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4108.303.200 |
| Material | High-strength cast iron with hardened bore |
| Weight | 2.85 kg (6.28 lbs) |
| Outer Diameter | 145 mm |
| Inner Bore Diameter | 38 mm |
| Overall Height | 62 mm |
| OEM Reference | ZF 4108.303.200 |
| Seal Grooves | 2 (for O-rings) |
Compatibility
This clutch body is engineered specifically for ZF WG-series powershift transmissions. Verified fitments include WG100, WG130, and WG131 models used in construction loaders, forklifts, and agricultural tractors. It is also compatible with certain variants of the WG180 and WG200 series when paired with the correct OIL LEVEL GAGE and housing assembly. Always cross-reference your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101128 | TRANSMISSION HOUSING | Encloses the clutch body and gear train |
| 4108201296 | HOUSING | Supports clutch body alignment |
| 4475280018 | SCREW PLUG | Seals oil passages in the housing |
| 0501215601 | OIL LEVEL GAGE | Monitors fluid level in the sump |
| 4108303034 | COVER | Protects clutch body access port |
| 0636015120 | HEXAGON SCREW | Fastens cover to housing |
| 0636302015 | SCREW PLUG | Drain plug for oil changes |
| 0501325471 | SEALING RING | Prevents fluid leaks at joints |
| 0730365280 | TYPE PLATE | Identifies transmission model |
| 4108108026 | INTERM.GEARBOX | Intermediate gear reduction unit |
