Overview
The ZF 4616.305.062 CLUTCH BUSHING is a precision-engineered wear component designed specifically for the WG 65 Series transmission. This OEM genuine part acts as a critical interface between the clutch assembly and the transmission housing, reducing friction and ensuring smooth rotational movement during gear engagement. The SKU 4616.305.062 is a direct factory replacement that maintains the exact clearance tolerances required for optimal hydraulic pressure distribution. When installed alongside the TRANSMISSION HOUSING, this bushing prevents metal-on-metal contact that would otherwise accelerate wear on the main shaft.
Symptoms of Failure
- Clutch drag or slow disengagement – A worn bushing creates excessive radial play, causing the clutch pack to remain partially engaged even when the pedal is depressed.
- Low hydraulic pressure at the clutch piston – Scoring on the bushing bore allows pressurized oil to bypass, leading to slipping under load and delayed shifts.
- Metallic debris in the transmission oil filter – Flaking bronze or steel particles from a failing bushing contaminate the fluid, often requiring replacement of the FILTER INSERT.
- Audible squealing or grinding from the bell housing – Dry running or misalignment generates high-frequency noise that worsens as the bushing clearance exceeds 0.15 mm.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.305.062 |
| Inner Diameter | 35.00 mm |
| Outer Diameter | 42.00 mm |
| Length | 28.50 mm |
| Material | Bronze alloy (CuSn8P) |
| Weight | 0.065 kg |
| OEM Reference | 4616.305.062 |
Compatibility
This clutch bushing is engineered for the ZF WG 65 Series transmission family. It is a direct fit for models including the WG65, WG80, WG120, WG150, WG180, and WG200 series. The bushing seats inside the TRANSMISSION HOUSING and is secured using specific fasteners: the HEXAGON SCREW (M8x20), the HEXAGON SCREW (M10x25), and the HEXAGON SCREW (M12x30). Always verify the bushing bore condition before reassembly to ensure proper oil flow to the clutch piston.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101089 | TRANSMISSION HOUSING | Main structural casing that houses the clutch bushing and shaft assembly |
| 0636011038 | HEXAGON SCREW | M8 fastener securing the clutch cover to the housing |
| 0636011118 | HEXAGON SCREW | M10 fastener for the bearing retainer plate |
| 0636016015 | HEXAGON SCREW | M12 fastener for the output flange |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing-to-clutch cover positioning |
| 0634313118 | O-RING | Seals the clutch piston bore against oil leakage |
| 0636304019 | SCREW PLUG | Closes the oil gallery access port |
| 0634801152 | SEALING RING | Copper washer for the screw plug |
| 0732611049 | FILTER INSERT | Hydraulic oil filtration element |
| 0634303718 | O-RING | Seals the filter housing cap |
