Overview
The ZF 0730.062.198 SPACER TUBE is a precision-machined component engineered specifically for the WG 181 series transmission. This OEM genuine part functions as a critical distance keeper within the planetary gear set, ensuring correct axial alignment between the rotating shafts and stationary housing elements. By maintaining exact spacing, the spacer tube prevents metal-to-metal contact and allows proper oil flow through the lubrication channels. The SKU 0730.062.198 is manufactured to ZF’s original tolerances, guaranteeing a direct fit without modification. This component works in conjunction with the TRANSMISSION HOUSING (4644101217) and the TRANSMISSION HOUSING (4644301383) to create a sealed, durable assembly that withstands high torque loads.
Symptoms of Failure
- Transmission oil leaks at the housing joint: A worn or cracked spacer tube compromises the seal between the THREADED BUSH (4644301189) and the housing, allowing ATF fluid to seep out during operation.
- Gear slipping under load: When the spacer tube collapses or deforms, gear train clearances increase, causing intermittent power loss and delayed engagement in forward or reverse gears.
- Abnormal whining or grinding noises: Misalignment from a failed spacer tube creates uneven bearing contact, producing a high-pitched whine that intensifies with vehicle speed.
- Metal particles in the oil pan: Excessive wear from a degraded spacer tube generates metallic debris, often visible during routine fluid changes or when inspecting the SCREW PLUG (4475280043).
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.062.198 |
| Material | Case-hardened steel (16MnCr5) |
| Outer Diameter | 42.0 mm |
| Inner Diameter | 28.5 mm |
| Length | 38.2 mm |
| Weight | 0.12 kg |
| OEM Reference | ZF 0730.062.198 |
| Surface Finish | Phosphated & oiled |
Compatibility
This spacer tube is primarily designed for the ZF WG 181 series transmissions, commonly found in medium-duty trucks, buses, and construction equipment. Based on its dimensional profile and application, it is also compatible with the ZF WG 180, WG 200, and WG 210 series. The part fits both standard and heavy-duty variants of these models. Always verify fitment by cross-referencing your transmission’s serial number with the OEM part number 0730.062.198.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101217 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301383 | TRANSMISSION HOUSING | Secondary housing for clutch pack support |
| 4644301189 | THREADED BUSH | Provides threaded interface for sensor mounting |
| 4475280043 | SCREW PLUG | Seals oil drain or fill ports |
| 0634306198 | O-RING | Prevents fluid leakage at static joints |
| 0634801098 | SEALING RING | Creates dynamic seal on rotating shafts |
| 0730365067 | TYPE PLATE | Identification label for transmission model |
| 0631311009 | GROOVED STUD | Alignment pin for housing assembly |
| 4644301161 | COVER PLATE | Protects internal components from debris |
| 0636100621 | HEXAGON SCREW | Fastens housing sections together |
