Overview
The ZF 4644.151.414 CLUTCH is a critical torque-transfer component engineered specifically for the WG 180 and WG 200 series transmissions. This OEM genuine part sits within the main drive assembly, acting as the primary interface between the engine and the gear train. By precisely engaging and disengaging power flow, the 4644.151.414 ensures smooth gear shifts and reliable power delivery under heavy industrial loads. As a direct replacement for the original factory component, this clutch maintains the exact ZF tolerances required for long service life. The SKU 4644.151.414 is manufactured to the same specifications as the unit originally installed in your transmission, guaranteeing a seamless fit and consistent performance.
Symptoms of Failure
- Delayed or harsh gear engagement: When the clutch disc or pressure plate wears, operators often experience a noticeable lag or a jarring “clunk” when shifting from neutral into drive or reverse.
- Transmission overheating under load: A slipping 4644.151.414 generates excessive friction heat, causing the transmission fluid to overheat and potentially triggering warning lights on the dashboard.
- Oil leaks near the bell housing: Worn seals within the clutch assembly can allow transmission fluid to escape, leaving visible drips or puddles beneath the vehicle.
- Loss of power during acceleration: If the clutch fails to fully lock, engine RPMs will rise without a corresponding increase in vehicle speed, a classic sign of internal wear.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.151.414 |
| OEM Reference | ZF 4644.151.414 |
| Material | High-carbon steel hub with sintered bronze friction lining |
| Outer Diameter | 430 mm (estimated) |
| Inner Diameter | 280 mm (estimated) |
| Total Weight | 14.5 kg (32.0 lbs) |
| Torque Capacity | 2,800 Nm (estimated) |
| Operating Temperature Range | -20°C to +120°C |
Compatibility
This clutch is precision-engineered for the ZF WG 180 and WG 200 transmission families. It is a direct fit for all WG 200 Series variants, including the WG 200, WG 200-6, and WG 200-8 models. The 4644.151.414 also serves as a compatible replacement for earlier WG 180 units that share the same spline count and pressure plate bolt pattern. For proper installation, this clutch must be used in conjunction with the 4644105424 DISCONNECTION mechanism and the 4644303538 OUTPUT FLANGE. Always verify that the 0636021036 HEXAGON SCREW set is included in your rebuild kit, and ensure the 4644101224 TRANSMISSION HOUSING is free of cracks before assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105424 | Disconnection | Engages/disengages clutch from shift linkage |
| 4644303538 | Output Flange | Transfers torque from clutch to driveshaft |
| 0636021036 | Hexagon Screw | Secures clutch assembly to flywheel |
| 4644101224 | Transmission Housing | Encloses clutch and gear train |
| 4644301346 | Transmission Housing | Alternate housing variant for WG 200 |
| 0730365067 | Type Plate | Identification label for transmission model |
| 4644106300 | Shift System | Controls clutch engagement via hydraulic pressure |
| 4644306500 | Cover Plate | Protects clutch access opening |
| 4644159311 | Shift System | Secondary shift mechanism for dual-clutch setups |
| 4644306563 | Valve Block | Regulates hydraulic fluid to clutch piston |
