Overview
The ZF 0501.209.499 GASKET is a critical sealing component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part sits between the transmission housing and the cover assembly, preventing fluid migration and maintaining hydraulic pressure within the gearbox. The SKU 0501.209.499 is precision-molded to match factory tolerances, ensuring a leak-free interface that protects internal components like the 4108101140 HOUSING from contamination. Without this gasket, the transmission cannot sustain proper lubrication or cooling, making it a non-negotiable element during any rebuild or seal replacement procedure.
Symptoms of Failure
- Oil seepage at the housing joint: A worn 0501.209.499 gasket often causes visible fluid trails around the mating surface of the 0501314793 COVER, leading to gradual oil loss.
- Hydraulic pressure drop: When this gasket degrades, internal pressure bleeds off, resulting in sluggish gear engagement or delayed shifts under load.
- Contaminated transmission fluid: A compromised seal allows dirt and moisture to enter the system, accelerating wear on the 0501211694 MOTOR and other precision assemblies.
- Overheating near the bell housing: Insufficient sealing disrupts oil flow, causing localized heat buildup that can warp adjacent components like the 0501314799 BUSH.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0501.209.499 |
| Material | Nitrile rubber (NBR) with fiber reinforcement |
| Inner Diameter | 98.5 mm |
| Outer Diameter | 132.0 mm |
| Thickness | 1.8 mm |
| Weight | 0.04 kg |
| OEM Reference | ZF 0501.209.499 |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This gasket is specifically designed for ZF WG100, WG130, and WG131 transmissions. It also fits select variants of the WG180 and WG200 series where the housing interface matches the 132 mm outer diameter profile. Always verify the mating surface condition of the 4108101140 HOUSING before installation, as warped flanges can compromise the seal. For WG200 models with upgraded 0501211694 MOTOR assemblies, confirm the gasket groove depth remains within 1.9 mm tolerance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101140 | HOUSING | Main structural casing for gear train |
| 0501211694 | MOTOR | Hydraulic actuation unit |
| 0501314793 | COVER | Seals the top of the transmission assembly |
| 0501314799 | BUSH | Wear-resistant bearing sleeve |
| 0735370299 | TAPERED ROLLER BEARING | Supports axial and radial loads |
| 0501317874 | HOUSING | Secondary housing for clutch pack |
| 0501317875 | ROLLER | Reduces friction in planetary gears |
| 0501209497 | PISTON | Hydraulic pressure actuator |
| 0501317876 | COMPRESSION SPRING | Returns piston to neutral position |
| 0501314823 | BUSH | Guides shift rod movement |
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