Overview
The ZF 4651.151.006 CLUTCH is a critical torque-transfer component engineered for the WG 100 and WG 110 transmission series. Positioned within the planetary gear set assembly, this OEM genuine part engages and disengages power flow between the input shaft and the gear train. The SKU 4651.151.006 ensures precise hydraulic actuation and friction engagement, directly influencing shift quality and load-holding capacity. Without this clutch pack, the transmission cannot modulate gear ratios, making it essential for smooth operation in heavy-duty industrial applications.
Symptoms of Failure
- Delayed or harsh shifting under load: When the clutch friction material wears, hydraulic pressure bleeds off, causing hesitation or jarring engagement during gear changes.
- Transmission slipping in forward gears: A worn 4651.151.006 clutch fails to lock the planetary carrier, resulting in RPM flare without corresponding vehicle movement.
- Burning smell or darkened transmission fluid: Overheated clutch plates generate acrid odors and contaminate the oil with carbon particles, visible as dark debris in the sump.
- Loss of torque converter lockup: Degraded clutch piston seals allow pressure loss, preventing full engagement and reducing fuel efficiency.
Technical Specifications
| Part Number | 4651.151.006 |
| OEM Reference | ZF 4651.151.006 |
| Material | Sintered bronze friction plates with steel separator discs |
| Outer Diameter | 180 mm |
| Inner Diameter | 120 mm |
| Total Thickness (pack) | 28.5 mm |
| Weight | 1.8 kg |
| Operating Pressure | 12–16 bar |
| Max Torque Capacity | 1,200 Nm |
Compatibility
This clutch assembly is primarily designed for the ZF WG 100 and ZF WG 110 transmissions. It also fits select variants of the WG 180 and WG 200 series where the clutch drum diameter matches. Always verify spline count and piston stroke before installation. The part integrates directly with the 4651101005: TRANSMISSION HOUSING and the 4651301010: HOUSING to form the clutch drum assembly. A proper seal is ensured by the 0634303928: O-RING, while the 4651301017: HOUSING provides the reaction surface for the clutch pack.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101005 | TRANSMISSION HOUSING | Encloses the clutch drum and gear set |
| 4651301010 | HOUSING | Supports clutch piston and spring assembly |
| 0634303928 | O-RING | Seals clutch piston bore against leakage |
| 4651301017 | HOUSING | Provides reaction surface for clutch pack |
| 4651203002 | SCREEN SHEET | Filters debris from clutch feed oil |
| 4651303005 | SCREEN SHEET | Secondary filtration for clutch circuit |
| 0636101032 | CAP SCREW | Secures clutch drum to hub |
| 0630361028 | SEALING CAP | Closes clutch pressure test port |
| 0636304032 | SCREW PLUG | Blocks unused clutch feed passages |
| 0634303312 | O-RING | Seals screw plug against fluid loss |
