Overview
The ZF 0730.006.263 SPACER RING is a precision-engineered OEM genuine component designed for the WG200, WG92, and WG98 series transmissions. This critical shim element sits between the TRANSMISSION HOUSING and the planetary gear assembly, maintaining exact axial clearance to prevent gear clash and ensure smooth power flow. As a factory-spec spacer, part number 0730.006.263 guarantees the correct end-play tolerances required for long-term durability in heavy-duty industrial applications. Without this ring, the entire gear train can shift out of alignment, leading to premature wear on surrounding components.
Symptoms of Failure
- Oil leaks at the housing seam: A worn or crushed spacer ring allows the HOUSING to shift, breaking the seal and causing transmission fluid to weep from the joint.
- Intermittent gear slipping under load: When the spacer loses its thickness, the planetary gears lose proper mesh, resulting in momentary power loss during acceleration or hill climbs.
- Abnormal whining or grinding noise: Insufficient axial clearance from a degraded spacer ring creates metal-on-metal contact, producing a distinct high-pitched whine that worsens with RPM.
- Erratic range engagement: A misaligned spacer can interfere with the RANGE SELECTOR mechanism, causing delayed or harsh shifts between forward and reverse.
Technical Specifications
| Specification | Value |
|---|---|
| Inner Diameter | 72.0 mm |
| Outer Diameter | 92.5 mm |
| Thickness | 2.5 mm |
| Material | Hardened alloy steel (C45E) |
| Weight | 0.045 kg |
| OEM Reference | 0730.006.263 |
| Surface Finish | Ground, phosphate-coated |
Compatibility
This spacer ring is engineered for ZF WG-series transmissions, specifically the WG180, WG200, WG92, WG94, and WG98 models. It is also used in certain WG90 variants with planetary gear sets. The part fits both standard and high-torque versions of these transmissions. For proper installation, ensure the PERIPHERALS kit is replaced simultaneously to maintain seal integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660198001 | PERIPHERALS | Seal and gasket kit for housing |
| 0501209818 | RANGE SELECTOR | Controls gear range engagement |
| 4660101011 | TRANSMISSION HOUSING | Main structural casing |
| 4660301018 | HOUSING | Secondary housing cover |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing |
| 0769123894 | TYPE PLATE | Identification label |
| 4660221012 | SUCTION TUBE | Oil pickup tube |
| 0634100317 | O-RING | Static seal for joints |
| 0636103273 | CAP SCREW | Fastener for housing |
| 0750100022 | SCREW PLUG | Drain/fill port plug |

