Overview
The ZF 0730.162.355 SPACER RING is a precision-engineered shim component designed for the WG 200 series of heavy-duty transmissions. This OEM genuine part sits between the planetary gear carrier and the clutch housing assembly, ensuring correct axial clearance and load distribution during high-torque operations. The SKU 0730.162.355 is manufactured to exact ZF tolerances to prevent metal-on-metal contact and maintain proper gear alignment within the WG200 gearbox. Without this spacer ring, the transmission’s internal components risk excessive wear and premature failure.
Symptoms of Failure
- Oil leaks around the clutch housing – A worn or deformed spacer ring can cause misalignment, leading to seal damage and fluid seepage at the WG200’s main housing joint.
- Gear slipping under load – When the 0730.162.355 spacer loses its thickness, axial play increases, allowing clutch packs to disengage intermittently during acceleration.
- Metallic grinding noises from the transmission – Insufficient spacing allows planetary gears to contact the housing, producing a distinct grinding sound during shifting.
- Vibration at highway speeds – Uneven wear on the spacer ring creates rotational imbalance, felt as driveline shudder in the 40-60 mph range.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0730.162.355 |
| Material | Case-hardened steel (DIN 1.7131) |
| Outer Diameter | 162 mm |
| Inner Diameter | 135 mm |
| Thickness | 3.55 mm |
| Weight | 0.18 kg |
| OEM Reference | ZF 0730.162.355 |
| Surface Finish | Ground, Ra 0.8 µm |
Compatibility
This spacer ring is primarily designed for the ZF WG200 series, including the WG200, WG180, and WG210 variants used in municipal buses, fire trucks, and off-highway equipment. It also fits select ZF Ecolife and Ecomat models that share the same planetary carrier architecture. Always verify your transmission’s serial number against the 0730.162.355 specification before installation.
During replacement, technicians often pair this spacer with the 4460165051 CONSOLE and the 4460368311 CONSOLE to ensure proper housing alignment. The 0636011429 HEXAGON SCREW and 0730100365 WASHER are also critical for securing the spacer ring in its correct position during reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460165051 | CONSOLE | Supports clutch housing alignment |
| 4460368311 | CONSOLE | Secondary housing support bracket |
| 0636011429 | HEXAGON SCREW | Fastens spacer ring to carrier |
| 0730100365 | WASHER | Distributes load under screw head |
| 4644105418 | DISCONNECTION | Clutch pack separation mechanism |
| 4644305041 | ADAPTER | Converts input shaft to flange |
| 4460068159 | AXLE DRIVE | Transfers power to differential |
| 4460168651 | INPUT FLANGE | Connects driveshaft to transmission |
| 4460368318 | FLANGE | Output shaft coupling |
| 4460368317 | DUST PROTECTION | Seals housing against debris |
