Overview
The ZF 4642.153.201 COUPLING is a precision-engineered component designed specifically for the WG 150 Series transmission. This OEM genuine part serves as the critical interface between the torque converter and the transmission input shaft, ensuring smooth power transfer and torsional vibration dampening. The SKU 4642.153.201 sits within the driveline assembly, directly connecting to the TRANSMISSION HOUSING (4642101109) to maintain proper alignment and load distribution. Without this coupling, the transmission cannot effectively transmit engine torque to the gear train, making it essential for operational reliability in heavy-duty industrial applications.
Symptoms of Failure
- Torque converter shudder during acceleration – A worn 4642.153.201 coupling causes noticeable vibration when shifting from neutral to drive, often mistaken for transmission fluid issues.
- Metallic grinding noise from bell housing – As the coupling splines wear, you will hear a distinct scraping sound, particularly at low RPMs, indicating imminent failure.
- Intermittent power loss under load – When the coupling begins to slip, the transmission may momentarily lose drive engagement, especially when climbing grades or carrying heavy loads.
- Fluid contamination from coupling debris – Worn coupling fragments can circulate through the system, clogging the SCREEN SHEET (4642301168) and reducing hydraulic pressure.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4642.153.201 |
| Material | High-strength alloy steel with nitrided surface |
| Outer Diameter | 153 mm |
| Inner Spline Diameter | 42 mm |
| Overall Length | 85 mm |
| Weight | 1.45 kg |
| Torque Capacity | 1,200 Nm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This ZF 4642.153.201 COUPLING is primarily designed for the WG 150 Series, but it also fits select models in the WG 180 and WG 200 families when used with the correct TRANSMISSION HOUSING (4642301205). Compatible transmissions include the WG 150-3, WG 150-4, WG 180-2, and WG 200-1. Always verify your transmission serial number against the TYPE PLATE (0730365125) before installation. The coupling also requires the GROOVED STUD (0631311009) for proper axial retention.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Encloses and supports the coupling assembly |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing for WG 180/200 series |
| 0730365125 | TYPE PLATE | Identification plate for transmission model verification |
| 0631311009 | GROOVED STUD | Retains coupling on input shaft |
| 4642301168 | SCREEN SHEET | Filters debris from coupling wear |
| 4642301169 | SCREEN SHEET | Fine-mesh filter for hydraulic circuit |
| 0636100621 | HEXAGON SCREW | Fastener for coupling-to-hub attachment |
| 4642301186 | SCREEN SHEET | Secondary filter for oil return line |
| 4644106231 | SHIFT SYSTEM | Controls gear engagement synchronized with coupling |
| 4644306470 | GASKET | Seals housing-to-coupling interface |
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