Overview
The ZF 4644.153.107 COUPLING is a critical OEM genuine component engineered for the WG 180 and WG 200 series transmissions. This precision-machined coupling serves as the primary mechanical link between the engine flywheel and the transmission input shaft, ensuring seamless torque transfer and driveline alignment. Designed to absorb torsional vibrations and minor misalignments, the 4644.153.107 directly interfaces with the TRANSMISSION HOUSING (4644101164) and the TRANSMISSION HOUSING (4644301371) to maintain structural integrity under heavy loads. As a genuine ZF part, this coupling guarantees factory-specified tolerances and material hardness, making it essential for maintaining OEM performance in industrial drivetrains.
Symptoms of Failure
- Transmission gear slipping under load: A worn 4644.153.107 coupling can cause intermittent power loss, especially during acceleration or uphill operation, as the coupling teeth lose engagement.
- Abnormal driveline vibration or shuddering: When the coupling’s elastomeric element degrades, it fails to dampen torsional vibrations, leading to noticeable shaking at specific RPM ranges.
- Oil leaks near the bell housing: Cracks or wear in the coupling can compromise the seal between the transmission and engine, allowing ATF fluid to escape past the O-RING (0634306525).
- Metallic grinding or clunking noises: Broken coupling splines or fractured hubs produce distinct metallic sounds during gear changes or when shifting between forward and reverse.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4644.153.107 |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter (Spline) | 35 mm (estimated) |
| Overall Length | 95 mm (estimated) |
| Material | High-strength alloy steel with nitrile rubber damping insert |
| Weight | 2.8 kg (estimated) |
| OEM Reference | ZF 4644.153.107 |
| Torque Capacity | Up to 1,200 Nm (estimated) |
Compatibility
This coupling is specifically designed for ZF WG 180 and WG 200 series transmissions. It is a direct replacement for units originally equipped with the TYPE PLATE (0730365067) and secured using the GROOVED STUD (0631311009). Compatible models include WG180, WG200, and select variants of the WG 211 series. Always verify your transmission’s serial number against the type plate before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101164 | TRANSMISSION HOUSING | Encloses and supports internal transmission components |
| 4644301371 | TRANSMISSION HOUSING | Alternate housing variant for WG200 series |
| 0730365067 | TYPE PLATE | Identification plate for transmission model and serial number |
| 0631311009 | GROOVED STUD | Secures coupling to flywheel with precise alignment |
| 4644303060 | COVER PLATE | Protects coupling from debris and contamination |
| 4644201011 | COVER PLATE | Alternative cover plate for WG180 applications |
| 4644201010 | COVER PLATE | Standard cover plate for WG200 series |
| 4644301372 | COVER PLATE | Reinforced cover plate for high-torque applications |
| 0636610028 | STUD | Mounting stud for transmission housing assembly |
| 0634306525 | O-RING | Seals coupling-to-housing interface to prevent oil leaks |
