Overview
The ZF 0730.301.867 SNAP RING is a critical retaining component engineered for the WG200, WG92, and related series of heavy-duty automatic transmissions. This OEM genuine part secures internal assemblies—such as clutch packs, planetary gear sets, and bearing stacks—within the transmission housing, preventing axial displacement under high torque loads. The SKU 0730.301.867 is specifically designed to lock components into precise positions, ensuring that the rotating elements maintain correct end-play tolerances. Without this snap ring, the entire gear train can shift out of alignment, leading to catastrophic internal damage. It is often replaced during a full rebuild alongside the 4660198001 PERIPHERALS kit and the 0501209818 RANGE SELECTOR to restore factory-spec performance.
Symptoms of Failure
- Intermittent gear slipping or loss of drive: When the snap ring fatigues or breaks, internal components shift, causing the transmission to slip out of gear under load, especially in higher ranges.
- Metallic grinding or rattling noises: A worn or dislodged snap ring allows planetary gears to contact the 4660101011 TRANSMISSION HOUSING, producing distinct metallic sounds during acceleration or deceleration.
- Oil leaks near the bell housing or mid-plate: A broken snap ring can cause the 4660301018 HOUSING to shift, breaking seal surfaces and allowing transmission fluid to escape.
- Hard shifting or delayed engagement: Loss of axial retention disrupts clutch pack clearance, leading to harsh engagement or a noticeable lag when shifting between forward and reverse.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 0730.301.867 |
| Material | Spring steel (C67S or equivalent), phosphate coated |
| Inner Diameter (nominal) | 130 mm |
| Wire Thickness (cross-section) | 4.0 mm |
| Free Outside Diameter | 145 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.301.867 |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This snap ring is a direct OEM replacement for ZF WG-series transmissions, including the WG180, WG200, WG92, WG94, and WG98 models. It is also used in the WG 90 Series and WG 200 Series variants. The part fits both standard and off-highway configurations where the internal retaining groove diameter matches 130 mm. Always verify the groove width and axial clearance during installation. For a complete rebuild, consider pairing this ring with the 0631306174 CYLINDRICAL PIN and the 0769123894 TYPE PLATE for proper identification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660198001 | PERIPHERALS | Kit containing seals, gaskets, and small hardware for transmission rebuild |
| 0501209818 | RANGE SELECTOR | Controls hydraulic flow for range shifting |
| 4660101011 | TRANSMISSION HOUSING | Main structural casing for gear and clutch assemblies |
| 4660301018 | HOUSING | Secondary housing component for valve body or PTO mounting |
| 0631306174 | CYLINDRICAL PIN | Alignment pin for housing and cover positioning |
| 0769123894 | TYPE PLATE | Identification plate with transmission model and serial number |
| 4660221012 | SUCTION TUBE | Oil pickup tube from pan to pump |
| 0634100317 | O-RING | Seal for hydraulic line connections |
| 0636103273 | CAP SCREW | Fastener for housing and cover attachment |
| 0750100022 | SCREW PLUG | Threaded plug for oil drain or test ports |
