Overview
The ZF 0501.212.369 DISC for WG110 is a precision-engineered friction component designed for the clutch pack assembly within ZF’s WG and BP series powershift transmissions. This OEM genuine part, identified by SKU 0501.212.369, sits directly between the steel separator plates in the rotating clutch drum. Its primary function is to transmit torque from the input shaft to the planetary gear sets, enabling smooth gear engagement and disengagement under heavy load. The disc’s high-carbon friction material is formulated to withstand extreme thermal stress and hydraulic pressure, ensuring consistent clamping force throughout its service life. When paired with a properly sealed TRANSMISSION HOUSING, this disc maintains the critical oil film thickness required for controlled slip during shifts.
Symptoms of Failure
- Delayed or harsh engagement: A worn 0501.212.369 disc loses its friction coefficient, causing the transmission to “flare” or slam into gear when shifting from neutral to drive.
- Torque converter shudder under load: As the friction material glazes or delaminates, operators will feel a distinct vibration or shudder when climbing grades or hauling heavy payloads.
- Burnt transmission fluid odor: Excessive slippage from a failed disc generates localized heat, oxidizing the ATF and producing a distinct burnt smell through the dipstick tube.
- Intermittent loss of forward or reverse: A chipped or warped disc can cause intermittent clutch pack pressure loss, resulting in sudden neutral conditions during operation.
Technical Specifications
| Part Number | 0501.212.369 |
| Outer Diameter | 180 mm (7.09 in) |
| Inner Diameter | 130 mm (5.12 in) |
| Thickness | 2.5 mm (0.098 in) |
| Material | High-carbon steel core with sintered bronze friction lining |
| Weight | 0.35 kg (0.77 lbs) |
| OEM Reference | ZF 0501.212.369 |
| Friction Surface | Grooved pattern for oil flow |
Compatibility
This friction disc is engineered for use across multiple ZF transmission platforms that share a common clutch pack architecture. It is a direct fit for the WG 110 Series, WG 115 Series, WG 130 Series, WG 131 Series, WG 160 Series, and WG 171 Series. Additionally, it is compatible with the BP 210 Series and BP 230 Series transmissions. The disc interfaces with the HOUSING (part 4651301032) and the HOUSING (part 4651301033) to form the complete clutch drum assembly. Always replace the O-RING (part 0634303928) during disc installation to prevent hydraulic pressure loss.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Encloses the clutch pack and directs oil flow |
| 4651301032 | HOUSING | Rear clutch drum housing for torque retention |
| 0634303928 | O-RING | Seals the piston bore to prevent hydraulic leakage |
| 4651301033 | HOUSING | Front clutch drum housing for planetary support |
| 4651203002 | SCREEN SHEET | Filters debris from clutch pack lubrication circuit |
| 4651303005 | SCREEN SHEET | Secondary filtration for high-pressure oil gallery |
| 0636101032 | CAP SCREW | Fastens the clutch drum to the hub assembly |
| 0630361028 | SEALING CAP | Plugs the clutch apply passage during service |
| 4475280060 | SCREW PLUG | Seals the pressure tap port on the housing |
| 0634303312 | O-RING | Seals the screw plug against fluid loss |
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