Overview
The ZF 0730.006.270 SPACER RING is a precision-engineered OEM genuine component designed for the WG200, WG92, and WG98 transmission series. This annular shim sits between the TRANSMISSION HOUSING and the planetary gear set, maintaining critical axial clearance to prevent gear clash. As a load-bearing spacer, it ensures proper alignment of the HOUSING assembly under torque. The SKU 0730.006.270 is machined from high-strength steel to withstand extreme pressure and thermal cycling in heavy-duty commercial transmissions.
Symptoms of Failure
- Transmission oil leaks at the housing joint: A worn spacer ring reduces clamping force, allowing ATF to seep past the PERIPHERALS seal interface.
- Gear slipping under load: Excessive axial play from a collapsed spacer causes the RANGE SELECTOR to misalign, leading to intermittent power loss.
- Metallic grinding noise during shifting: Worn spacer thickness allows planetary gears to contact the housing, producing a distinct chatter.
- Vibration in neutral or drive: Uneven spacer wear creates rotational imbalance, felt as low-frequency shudder through the chassis.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.006.270 |
| Inner Diameter | 120 mm (estimated) |
| Outer Diameter | 145 mm (estimated) |
| Thickness | 2.5 mm (estimated) |
| Material | Case-hardened steel (DIN 1.7131) |
| Weight | 0.18 kg |
| OEM Reference | ZF 0730.006.270 |
Compatibility
This spacer ring is engineered for ZF WG-series transmissions with modular planetary designs. Confirmed fitment includes the WG180, WG200, WG92, WG94, and WG98 models. It is also compatible with the WG 90 Series and WG 200 Series heavy-duty off-highway transmissions. Always verify clearance with your specific TRANSMISSION HOUSING casting number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660198001 | PERIPHERALS | Seals and gaskets for housing interface |
| 0501209818 | RANGE SELECTOR | Hydraulic valve for gear range engagement |
| 4660101011 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4660301018 | HOUSING | Rear cover housing for output shaft |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0769123894 | TYPE PLATE | Identification plate with transmission specs |
| 4660221012 | SUCTION TUBE | Oil pickup tube for pump inlet |
| 0634100317 | O-RING | Static seal for hydraulic passages |
| 0636103273 | CAP SCREW | Fastener for housing retention |
| 0750100022 | SCREW PLUG | Threaded plug for drain/fill ports |
