Overview
The ZF 4644.152.412 CLUTCH is a critical internal component engineered specifically for the WG 180 and WG 200 series transmissions. This OEM genuine part functions as the primary torque-transfer interface, engaging and disengaging the driveline to facilitate smooth gear changes under heavy load conditions. Positioned within the clutch pack assembly, this SKU (4644.152.412) ensures precise hydraulic actuation and consistent power delivery. When paired with a robust TRANSMISSION HOUSING, the clutch maintains structural alignment, while the HOUSING provides the necessary containment for hydraulic pressure. The TYPE PLATE and GROOVED STUD are also integral to the assembly, ensuring correct identification and secure fastening during installation.
Symptoms of Failure
When the ZF 4644.152.412 CLUTCH begins to wear, operators will notice distinct performance degradation. Delayed engagement or gear slipping under load is the most common indicator, often accompanied by a noticeable loss of torque during acceleration. Hydraulic fluid contamination from clutch plate debris can lead to erratic shifting patterns. Another frequent symptom is overheating of the transmission housing, detectable by burnt oil smell or elevated temperature gauges. Finally, audible grinding or chattering noises during gear changes typically signal that the friction material has worn beyond service limits, requiring immediate replacement of this part.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4644.152.412 |
| OEM Reference | ZF 4644.152.412 |
| Material | Sintered steel friction plates with carbon composite |
| Weight | 2.8 kg (6.2 lbs) |
| Outer Diameter | 180 mm |
| Inner Diameter | 120 mm |
| Thickness | 8.5 mm |
| Operating Pressure | 12-18 bar |
| Temperature Range | -20°C to +120°C |
Compatibility
This clutch is designed for the ZF WG 180 and WG 200 transmission families. It is directly compatible with the WG 180, WG 200, WG 200-1, and WG 200-2 models. The part also fits select variants of the WG 180-1 and WG 180-2 where the clutch pack configuration matches the 180 mm diameter specification. Always verify the transmission serial number against the TYPE PLATE to ensure correct fitment. For complete assembly, consider the SHIFT SYSTEM and SHIFT SYSTEM components, which work in tandem with this clutch.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101144 | TRANSMISSION HOUSING | Encloses and supports the clutch assembly |
| 4644301304 | HOUSING | Provides hydraulic pressure containment |
| 0730365067 | TYPE PLATE | Identifies transmission model and specs |
| 0631311009 | GROOVED STUD | Secures housing components with precise torque |
| 4644106319 | SHIFT SYSTEM | Controls clutch engagement timing |
| 4644159338 | SHIFT SYSTEM | Alternate shift control module |
| 4644306577 | PISTON | Applies hydraulic force to clutch pack |
| 4644306540 | PLUG | Seals hydraulic passages |
| 4644306536 | GASKET | Prevents fluid leaks between mating surfaces |
| 4475280036 | SCREW-IN SLEEVE | Provides threaded mounting point for sensors |
