Overview
The ZF 4616.303.028 CLUTCH BELL HOUSING is a critical structural component designed specifically for the WG 65 Series transmission. This OEM genuine part serves as the primary interface between the engine flywheel housing and the transmission main case, enclosing the clutch assembly and torque converter. The SKU 4616.303.028 ensures precise alignment of the input shaft and provides a sealed environment to protect internal components from contaminants. When replacing this housing, it is essential to also inspect the 4616101059: TRANSMISSION HOUSING for any signs of wear or cracking, as both components work in tandem to maintain drivetrain integrity.
Symptoms of Failure
- Transmission fluid leaking from bell housing area: A cracked or warped bell housing allows ATF to seep past gaskets, often visible as drips near the engine-transmission junction.
- Clutch engagement vibration or noise: Misalignment due to a damaged housing causes the clutch disc to wobble, producing a rhythmic thumping sound during gear changes.
- Difficulty shifting gears or gear slipping: When the housing distorts, the input shaft alignment shifts, leading to incomplete clutch disengagement and hard shifting.
- Visible cracks or corrosion on the housing exterior: Stress fractures near bolt holes or mounting flanges indicate imminent failure and require immediate replacement.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.303.028 |
| Material | High-grade cast aluminum alloy (A356-T6) |
| Weight | 12.4 kg (27.3 lbs) |
| Overall Length | 385 mm |
| Bolt Hole Pattern | 6-hole, 180 mm PCD |
| OEM Reference | ZF 4616.303.028 |
| Sealing Surface Finish | Ra 0.8 µm |
Compatibility
This clutch bell housing is engineered for the ZF WG 65 Series, but it also fits select models in the WG180 and WG200 families when used with the correct adapter kit. Primary applications include WG65, WG180, and WG200 transmissions found in heavy-duty trucks, construction equipment, and agricultural machinery. Always verify compatibility by cross-referencing your transmission serial number. For secure installation, use the 0636011038: HEXAGON SCREW and 0636011118: HEXAGON SCREW for the main mounting points, along with the 0636016015: HEXAGON SCREW for the flywheel housing attachment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main transmission casing |
| 0636011038 | HEXAGON SCREW | Bell housing to transmission bolt |
| 0636011118 | HEXAGON SCREW | Flywheel housing attachment bolt |
| 0636016015 | HEXAGON SCREW | Clutch housing mounting screw |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing |
| 0634313118 | O-RING | Seal between housing and case |
| 0636304019 | SCREW PLUG | Oil drain plug for bell housing |
| 0634801152 | SEALING RING | Copper washer for plug seal |
| 0732611049 | FILTER INSERT | Internal oil filter element |
| 0634303718 | O-RING | Gasket for filter cover |
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