Overview
The ZF 0501.212.368 FRICTION DISC is a critical wear component engineered for the clutch packs within the WG110 and related heavy-duty transmissions. This OEM genuine part ensures precise torque transfer and smooth gear engagement by providing the necessary frictional surface between steel separator plates. Located inside the transmission’s rotating drum assembly, the SKU 0501.212.368 directly influences shift quality and overall drivetrain efficiency. When installed alongside a properly sealed TRANSMISSION HOUSING, this disc maintains consistent hydraulic pressure and prevents power loss during operation.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn friction disc loses its grip, causing noticeable hesitation or a jarring shift when moving from neutral to drive or reverse.
- Transmission slipping under load: As the disc’s friction material degrades, the transmission may momentarily lose power delivery, especially during uphill climbs or heavy hauling.
- Burnt clutch smell or dark fluid: Excessive heat from slippage burns the friction lining, producing a distinct acrid odor and turning transmission fluid dark or gritty.
- Erratic shifting in WG110 series: Inconsistent RPM flare-ups between gears indicate the disc can no longer hold torque, often accompanied by vibration in the driveline.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0501.212.368 |
| Outer Diameter | ~180 mm (estimated) |
| Inner Diameter | ~120 mm (estimated) |
| Thickness | ~3.5 mm (new) |
| Material | High-carbon steel core with sintered bronze friction lining |
| Weight | ~0.35 kg |
| OEM Reference | ZF 0501.212.368 |
| Torque Capacity | Designed for WG110 series clutch packs |
Compatibility
This friction disc is primarily specified for the ZF WG110 transmission series but also fits the BP 210, BP 230, WG 115, WG 130, WG 131, WG 160, and WG 171 models. It is not compatible with the WG180 or WG200 series due to different spline counts and diameter requirements. For proper installation, always verify the disc’s fitment against the clutch hub and ensure the HOUSING is free of scoring. Replacing the O-RING on the piston seal is recommended during disc replacement to prevent fluid bypass. Additionally, inspect the HOUSING for cracks that could compromise clutch pack alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Encloses the gear train and clutch assembly |
| 4651301032 | HOUSING | Supports the clutch drum and oil passages |
| 0634303928 | O-RING | Seals the piston chamber to prevent pressure loss |
| 4651301033 | HOUSING | Rear housing for clutch pack retention |
| 4651203002 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4651303005 | SCREEN SHEET | Secondary filtration for oil return line |
| 0636101032 | CAP SCREW | Secures housing halves together |
| 0630361028 | SEALING CAP | Blocks unused hydraulic ports |
| 4475280060 | SCREW PLUG | Closes oil drain or test points |
| 0634303312 | O-RING | Seals the screw plug against leaks |
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