Overview
The ZF 0730.063.230 RING is a precision-engineered sealing component designed for the WG200 and WG201 series transmissions. This OEM genuine part sits within the clutch pack or planetary gear assembly, where it functions as a critical sealing ring to maintain hydraulic pressure and prevent fluid bypass between rotating and stationary components. The SKU 0730.063.230 ensures exact fitment and durability under high thermal and mechanical loads, directly supporting gear engagement and torque transfer efficiency.
Symptoms of Failure
- Oil leaks around the transmission housing: A worn 0730.063.230 ring can cause pressurized fluid to escape, leading to visible drips or puddles under the vehicle. This often triggers low transmission fluid warnings.
- Delayed or harsh gear engagement: When the ring loses its sealing integrity, hydraulic pressure drops, resulting in sluggish shifting or abrupt clutch application during acceleration.
- Transmission slipping under load: Internal fluid bypass due to a degraded ring reduces torque capacity, causing the transmission to slip when climbing grades or towing heavy loads.
- Overheating and burnt fluid smell: Insufficient sealing forces the transmission to work harder, generating excess heat that degrades fluid and produces a burnt odor.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.063.230 |
| Material | High-grade steel with nitrile coating |
| Inner Diameter | 63 mm |
| Outer Diameter | 73 mm |
| Thickness | 2.3 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.063.230 |
Compatibility
This ring is engineered for ZF WG series transmissions, specifically the WG180, WG200, and WG201 models. It is also compatible with select WG211 variants that share the same clutch drum design. Always verify your transmission serial number before installation.
When servicing the WG200 or WG201, this ring is often replaced alongside the 4644105413 DISCONNECTION unit, which isolates the transmission during removal. The 4642303093 OUTPUT FLANGE must be torqued correctly to avoid ring distortion. Secure the assembly with a 0636021010 HEXAGON SCREW, and ensure the 4644101040 TRANSMISSION HOUSING is clean and free of debris before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105413 | DISCONNECTION | Isolates transmission from driveline |
| 4642303093 | OUTPUT FLANGE | Connects driveshaft to transmission |
| 0636021010 | HEXAGON SCREW | Secures flange and ring assembly |
| 4644101040 | TRANSMISSION HOUSING | Encloses internal components |
| 4644301197 | TRANSMISSION HOUSING | Alternate housing variant |
| 0730365067 | TYPE PLATE | Identification label for transmission |
| 0631311009 | GROOVED STUD | Alignment pin for housing |
| 0636015073 | HEXAGON SCREW | Fastener for clutch assembly |
| 0634801250 | SEALING RING | Prevents fluid leakage |
| 0636305026 | SCREW PLUG | Seals inspection ports |
