Overview
The ZF 0730.161.277 BUSH for WG181 is a precision-engineered OEM genuine component designed to serve as a critical wear surface within the planetary gearset assembly of heavy-duty ZF transmissions. This bushing, identified by SKU 0730.161.277, is installed directly inside the TRANSMISSION HOUSING to support rotating shafts and reduce friction between moving parts. By maintaining correct shaft alignment and load distribution, this bushing ensures smooth torque transfer and extends the service life of the entire gear train. It is a direct-fit replacement for the WG 181 Series, guaranteeing OEM tolerances and material integrity.
Symptoms of Failure
When the ZF 0730.161.277 bushing wears out, operators may notice distinct performance issues. Look for these specific failure symptoms to diagnose a worn bushing:
- Oil leaks around the housing interface: A degraded bushing can cause seal misalignment, leading to transmission fluid seepage near the HOUSING joint.
- Gear slipping under load: Excessive radial play from a worn bushing allows the shaft to shift, causing intermittent gear disengagement during acceleration.
- Metallic grinding noises: As the bushing material erodes, metal-to-metal contact between the shaft and housing produces a distinct grinding sound during operation.
- Vibration in the driveline: Loss of bushing integrity introduces shaft wobble, resulting in noticeable vibration at highway speeds.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.161.277 |
| Material | Steel-backed bronze alloy |
| Inner Diameter | 45 mm (estimated) |
| Outer Diameter | 55 mm (estimated) |
| Length | 30 mm (estimated) |
| Weight | 0.12 kg |
| OEM Reference | ZF 0730.161.277 |
| Threaded Bush | 4644301189: THREADED BUSH |
| Type Plate | 0730365067: TYPE PLATE |
Compatibility
This bushing is engineered for the ZF WG 181 Series transmission family. Based on its design and application, it is also compatible with the following ZF models that share similar planetary gearset architecture: WG180, WG200, and WG211. Always verify fitment against your transmission’s serial number and housing configuration before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101047 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301380 | HOUSING | Secondary housing for bearing support |
| 4644301189 | THREADED BUSH | Provides threaded mounting point for fasteners |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Secures components with positive locking |
| 4644301161 | COVER PLATE | Seals housing access opening |
| 0636100621 | HEXAGON SCREW | Standard fastener for assembly |
| 0631610020 | SET SCREW | Adjustable locking fastener |
| 0634801098 | SEALING RING | Prevents fluid leakage at joints |
| 4644301117 | FIXING PLATE | Retains bushings in position |
