Overview
The ZF 4644.130.201 ENGINE CONNECTION is a critical interface component designed for the WG 201 Series transmission family. This OEM genuine part serves as the primary mechanical link between the engine flywheel housing and the transmission bell housing, ensuring precise alignment and torque transfer during operation. As a structural adapter, the 4644.130.201 absorbs torsional vibrations while maintaining a sealed environment for the torque converter assembly. This SKU is manufactured to ZF’s exacting tolerances, making it an essential replacement for maintaining driveline integrity in heavy-duty industrial applications.
Symptoms of Failure
When the ZF 4644.130.201 ENGINE CONNECTION begins to wear, operators may notice specific operational issues. Oil seepage at the engine-transmission mating surface is a common early indicator, often caused by degraded sealing surfaces. Abnormal driveline vibration during acceleration can occur if the connection loses its structural rigidity. Intermittent gear engagement difficulty may arise from misalignment, leading to premature wear on the TRANSMISSION HOUSING (4644101160). Finally, visible metal debris in transmission fluid suggests fretting corrosion at the connection interface, requiring immediate inspection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.130.201 |
| Material | High-grade cast aluminum alloy |
| Overall Diameter | 285 mm (estimated) |
| Bolt Hole Pattern | 8x M12 on 240 mm PCD |
| Weight | 3.2 kg (7.1 lbs) |
| OEM Reference | ZF WG 201 Series |
| Sealing Surface | Precision-machined with O-ring groove |
Compatibility
This ENGINE CONNECTION is specifically engineered for the ZF WG 201 Series, but it also fits select variants within the WG180 and WG200 families due to shared bell housing dimensions. It is directly compatible with the TRANSMISSION HOUSING (4644301323) and the THREADED BUSH (4644301189) used in these assemblies. For proper sealing, always pair this part with the SCREW PLUG (4475280043) during installation. Applications include municipal trucks, construction loaders, and industrial material handlers equipped with ZF WG transmissions.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 4644301189 | THREADED BUSH | Wear-resistant insert for bolt holes |
| 4475280043 | SCREW PLUG | Seals hydraulic passages |
| 0634306198 | O-RING | Prevents fluid leakage at joints |
| 0730365067 | TYPE PLATE | Identification label for transmission |
| 4644301161 | COVER PLATE | Protects internal components |
| 0636100621 | HEXAGON SCREW | Fastener for housing attachment |
| 0631610020 | SET SCREW | Adjustable locking fastener |
| 0501218540 | BREATHER | Equalizes internal pressure |
