Overview
The ZF 0501.212.784 SEAL KIT is a critical OEM genuine maintenance component designed to restore hydraulic integrity within ZF WG-series transmissions. This kit contains all necessary elastomeric seals, gaskets, and O-rings required to reseal the valve body and clutch piston areas. The SKU 0501.212.784 is specifically engineered to prevent cross-contamination between oil circuits, ensuring precise shift timing and pressure retention. When installed alongside a TRANSMISSION HOUSING, this seal kit guarantees a leak-free interface between stationary and rotating assemblies.
Symptoms of Failure
- External oil seepage at transmission housing seams: Worn seals in the 0501.212.784 kit allow ATF to escape, leaving visible drips under the bellhousing or pan rail.
- Delayed or harsh gear engagement: Internal seal degradation causes pressure loss, leading to “flare shifts” or a 2-3 second delay when selecting Drive or Reverse.
- Erratic shift quality under load: When seals fail, the transmission may hunt between gears or slip during uphill climbs, particularly in WG110 and WG115 units.
- Low fluid level without external leaks: Internal seal failure can allow fluid to bypass into the torque converter housing, causing mysterious fluid consumption.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 0501.212.784 |
| Kit Contents | 12 seals, 4 O-rings, 2 gaskets |
| Primary Material | Nitrile rubber (NBR) / Viton |
| Temperature Range | -40°F to 300°F (-40°C to 150°C) |
| Weight | 0.35 lbs (160 g) |
| Compatible Fluid | ZF TE-ML 03, 04, 05, 09 |
Compatibility
This seal kit is engineered for the WG110, WG115, WG130, and WG160 series transmissions. It also fits select WG180 and WG200 variants when used with a HOUSING adapter. The kit is not recommended for pre-1990 WG models without verifying the O-RING cross-section. For WG200 applications, pairing this kit with a HOUSING ensures proper sealing of the main control bore.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4651301032 | HOUSING | Valve body housing adapter |
| 0634303928 | O-RING | Static seal for hydraulic passages |
| 4651301033 | HOUSING | Rear housing for WG200 series |
| 4651203002 | SCREEN SHEET | Fine mesh filter for oil pickup |
| 4651303005 | SCREEN SHEET | Secondary filter for valve body |
| 0636101032 | CAP SCREW | Fastener for housing assembly |
| 0630361028 | SEALING CAP | Port plug for test points |
| 4475280060 | SCREW PLUG | Drain/fill port closure |
| 0634303312 | O-RING | Seal for screw plug |
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