Overview
The ZF 4642.151.485 COUPLING is a critical torque-transfer component engineered specifically for the WG 150 Series transmission. Positioned between the engine output and the transmission input shaft, this OEM genuine part ensures smooth power delivery and dampens torsional vibrations. The SKU 4642.151.485 is manufactured to ZF’s exacting tolerances, guaranteeing a precise fit within the WG 150 assembly. When installed alongside the 4642101114 TRANSMISSION HOUSING or the 4642301213 TRANSMISSION HOUSING, this coupling maintains driveline integrity under heavy industrial loads.
Symptoms of Failure
- Torque fluctuation under load: A worn coupling causes jerky acceleration or hesitation, especially during gear changes.
- Metallic grinding or clunking noises: Degraded internal splines or elastomeric elements produce audible distress from the bell housing area.
- Oil seepage near the input shaft: A failing coupling can compromise the seal interface, leading to fluid loss and potential contamination.
- Vibration at specific RPM ranges: Imbalance from a fatigued coupling transfers through the drivetrain, felt in the chassis or shift lever.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4642.151.485 |
| Material | High-tensile steel with nitrile rubber damping element |
| Outer Diameter | 185 mm |
| Inner Spline Diameter | 45 mm |
| Overall Length | 95 mm |
| Weight | 2.4 kg |
| OEM Reference | ZF 4642.151.485 |
| Torque Capacity | 1,200 Nm |
Compatibility
This coupling is primarily designed for the ZF WG 150 series, but it also fits select variants of the WG 180 and WG 200 transmissions when used with the correct housing. For proper installation, verify that the 0730365125 TYPE PLATE matches your transmission model. The coupling interfaces directly with the 0631311009 GROOVED STUD to secure alignment. Always consult your transmission’s serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101114 | TRANSMISSION HOUSING | Encloses and supports gear train assembly |
| 4642301213 | TRANSMISSION HOUSING | Alternate housing for WG 150 variants |
| 0730365125 | TYPE PLATE | Identifies transmission model and specs |
| 0631311009 | GROOVED STUD | Secures coupling to input shaft |
| 4642301168 | SCREEN SHEET | Filters debris from hydraulic circuit |
| 4642301169 | SCREEN SHEET | Fine mesh filter for oil return line |
| 0636100621 | HEXAGON SCREW | Fastens housing components |
| 4642301186 | SCREEN SHEET | Secondary filtration element |
| 4644106300 | SHIFT SYSTEM | Controls gear selection mechanism |
| 4644306500 | COVER PLATE | Seals transmission access opening |
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