Overview
The ZF 4644.152.112 COUPLING is a critical driveline component engineered specifically for the WG 180 and WG 200 transmission series. This OEM genuine part serves as the mechanical link between the engine output and the transmission input shaft, ensuring precise torque transfer and dampening torsional vibrations. Located within the bell housing assembly, the 4644.152.112 coupling directly interfaces with the TRANSMISSION HOUSING to maintain axial alignment and rotational stability. As a wear-sensitive element, this coupling directly influences shift quality and overall transmission longevity. The SKU 4644.152.112 is manufactured to ZF’s original equipment specifications, guaranteeing a direct fit without modification.
Symptoms of Failure
- Transmission shudder during acceleration: A worn 4644.152.112 coupling often produces a pronounced vibration or shudder when the vehicle is under load, particularly between 1,200 and 1,800 RPM.
- Oil seepage from bell housing area: Degradation of the coupling’s sealing surface can allow transmission fluid to escape, often mistaken for a failing SCREW PLUG or gasket.
- Metallic clicking or clunking on gear engagement: Excessive clearance in the coupling creates audible noise when shifting from Park to Drive or Reverse, indicating imminent failure.
- Irregular wear on the TRANSMISSION HOUSING mounting points: A failing coupling can cause abnormal stress patterns, leading to premature housing wear and misalignment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.152.112 |
| Outer Diameter | 152 mm |
| Inner Diameter | 112 mm |
| Material | High-tensile steel with nitrile rubber dampener |
| Weight | 1.85 kg |
| OEM Reference | ZF 4644.152.112 |
| Torque Capacity | 1,200 Nm |
| Operating Temperature | -40°C to +120°C |
Compatibility
This coupling is designed for the ZF WG 201 Series, with direct application in the WG 180 and WG 200 transmission models. It is also compatible with select variants of the WG 160 and WG 210 when used with the appropriate THREADED BUSH adapter. The 4644.152.112 coupling replaces earlier part numbers 4644.150.110 and 4644.151.111. Always verify housing compatibility, as the coupling interfaces with both the TRANSMISSION HOUSING and the TRANSMISSION HOUSING (rear section) to ensure proper spline engagement.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101172 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301390 | TRANSMISSION HOUSING | Rear housing section for output shaft support |
| 4644301189 | THREADED BUSH | Alignment insert for coupling mounting bolts |
| 0636302005 | SCREW PLUG | Seals fluid passages in housing |
| 0634306198 | O-RING | Prevents fluid leakage at coupling interface |
| 0634801098 | SEALING RING | Secondary seal for high-pressure zones |
| 0730365067 | TYPE PLATE | Identification label for transmission model |
| 0631311009 | GROOVED STUD | Locating pin for housing alignment |
| 4644301161 | COVER PLATE | Protective shield over coupling access port |
| 0636100621 | HEXAGON SCREW | Fastener for coupling-to-housing attachment |
