Overview
The ZF 0730.163.212 BUSH is a precision-engineered wear component designed for the WG 94 series of powershift transmissions. This OEM genuine part functions as a critical bearing surface within the rotating clutch drum assembly, reducing friction between the shaft and the housing during torque transfer. Installed directly inside the HOUSING II, this bushing maintains concentric alignment of the gear train under heavy load. The SKU 0730.163.212 is manufactured to ZF’s original metallurgical specifications, ensuring a precise interference fit and consistent oil film retention.
Symptoms of Failure
- Erratic clutch engagement and gear hunting – When the bushing wall thickness degrades, the clutch drum loses axial stability, causing delayed or harsh shifts under load.
- Low transmission oil pressure with metallic debris – Worn bushings generate bronze or steel particles that contaminate the hydraulic circuit, often visible during oil changes.
- High-frequency whining noise from the bell housing – A distinct metallic squeal during acceleration indicates the bushing has lost its lubricating clearance, leading to metal-on-metal contact.
- Oil seepage around the output shaft seal – Excessive radial play from a worn 0730.163.212 bushing distorts the seal lip, causing slow drips from the transmission case.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0730.163.212 |
| Material | Phosphor bronze with PTFE overlay |
| Inner Diameter | 38.10 mm (1.500 in) |
| Outer Diameter | 44.45 mm (1.750 in) |
| Length | 25.40 mm (1.000 in) |
| Weight | 0.09 kg (0.20 lbs) |
| OEM Reference | ZF 0730.163.212 |
| Hardness | 80-90 HRB |
Compatibility
This bushing is engineered for the WG 94 series of ZF powershift transmissions, which includes models WG94, WG98, and WG100. It is also a direct replacement for the bushing used in the WG180 and WG200 series when installed in the clutch drum assembly. The 0730.163.212 interfaces directly with the TRANSMISSION HOUSING and requires proper alignment with the CYLINDRICAL PIN for correct oil gallery orientation. Always verify the bushing bore condition in the TUBE before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101018 | TRANSMISSION HOUSING | Main structural casing that supports all gear and shaft assemblies |
| 4661301050 | HOUSING II | Secondary housing that encloses the clutch drum and bushing bore |
| 4661301093 | TUBE | Oil delivery tube that lubricates the bushing and clutch pack |
| 0631306174 | CYLINDRICAL PIN | Alignment pin for precise bushing and housing orientation |
| 0769123894 | TYPE PLATE | Identification plate riveted to the transmission housing |
| 0750100022 | SCREW PLUG | Sealing plug for hydraulic test ports |
| 0636302602 | SCREW PLUG | Magnetic drain plug for ferrous debris collection |
| 0634100633 | O-RING | Static seal between the bushing bore and housing face |
| 4661301029 | NOZZLE | Oil spray nozzle for clutch pack cooling |
| 4661301027 | NOZZLE | Secondary oil nozzle for planetary gear lubrication |
