Overview
The ZF 0730.301.868 SNAP RING is a precision-engineered retaining component designed for the WG200 and WG92 transmission series. This OEM genuine part functions as a critical axial locking mechanism, securing internal assemblies such as clutch packs, planetary gear sets, and bearing races within the transmission housing. Positioned inside the main shaft or drum assembly, the snap ring prevents lateral movement of components under high torque and thermal expansion. The SKU 0730.301.868 is manufactured to exact ZF tolerances, ensuring a secure fit that maintains gear alignment and hydraulic pressure integrity. When installed alongside a 4660198001 PERIPHERALS kit, this snap ring contributes to the overall reliability of the drivetrain system.
Symptoms of Failure
- Intermittent gear slipping under load – A worn or deformed snap ring allows axial play in the clutch drum, causing temporary loss of torque transfer during acceleration.
- Low hydraulic pressure warnings – When the snap ring fails to retain the piston assembly, internal leakage occurs, triggering pressure drops in the valve body.
- Metallic rattling from the transmission housing – Loose components due to a broken snap ring create audible noise, especially during gear changes or deceleration.
- Oil seepage near the output shaft seal – Misalignment caused by a fatigued snap ring can distort the 4660101011 TRANSMISSION HOUSING, leading to external fluid leaks.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.301.868 |
| Material | Spring steel (DIN 17222), zinc-plated |
| Inner Diameter | 68.5 mm |
| Outer Diameter | 76.2 mm |
| Thickness | 2.5 mm |
| Weight | 12 grams |
| OEM Reference | ZF 0730.301.868 |
| Installation Torque | Not applicable (press-fit retention) |
Compatibility
This snap ring is engineered for the ZF WG series of powershift transmissions. It is directly compatible with the following models: WG180, WG200, WG92, WG94, and WG98. The part also fits select variants of the WG90 series, particularly those using the same planetary carrier design. For proper installation, ensure the 0501209818 RANGE SELECTOR and 4660301018 HOUSING are correctly aligned to avoid stress on the snap ring groove.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660198001 | PERIPHERALS | Seals and gaskets for clutch drum assembly |
| 0501209818 | RANGE SELECTOR | Controls gear engagement in splitter section |
| 4660101011 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4660301018 | HOUSING | Rear housing section for output shaft |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0769123894 | TYPE PLATE | Identification tag for transmission model |
| 4660221012 | SUCTION TUBE | Oil pickup from sump to pump |
| 0634100317 | O-RING | Hydraulic seal for piston circuits |
| 0636103273 | CAP SCREW | Fastener for valve body attachment |
| 0750100022 | SCREW PLUG | Seals oil passages in housing |

