Overview
The ZF 4616.298.011 COUPLING is a precision-engineered component designed specifically for the WG 65 Series transmission. This OEM genuine part serves as the critical link between the torque converter output and the transmission input shaft, ensuring smooth power transfer and torsional vibration dampening. Positioned within the driveline assembly, the SKU 4616.298.011 directly interfaces with the TRANSMISSION HOUSING (4616101101) and is secured using the HEXAGON SCREW (0636011118) to maintain precise alignment. This coupling is manufactured to ZF’s exacting tolerances, making it essential for maintaining the integrity of the WG 65 gear train under heavy-duty industrial loads.
Symptoms of Failure
- Torque converter shudder or vibration during acceleration — A worn 4616.298.011 coupling can cause noticeable driveline shudder, especially when shifting from neutral to drive under load.
- Transmission fluid contamination with metallic debris — As the coupling splines wear, fine metal particles enter the hydraulic circuit, leading to premature wear of valves and clutches.
- Intermittent gear engagement delay or slipping — Degraded coupling splines prevent proper torque transfer, resulting in delayed engagement or a “slipping” sensation during gear changes.
- Abnormal noise from the bell housing area — A loose or cracked coupling produces a distinct rattling or knocking sound, particularly at low RPMs or during deceleration.
Technical Specifications
| Part Number | 4616.298.011 |
| Material | High-strength alloy steel, induction-hardened |
| Outer Diameter | 168 mm |
| Inner Diameter (Spline) | 42 mm |
| Overall Length | 95 mm |
| Weight | 2.3 kg |
| OEM Reference | ZF 4616.298.011 |
| Torque Capacity | 2,800 Nm (estimated) |
| Surface Treatment | Phosphate coating for corrosion resistance |
Compatibility
This coupling is engineered for the ZF WG 65 Series, but its spline geometry and torque rating also make it suitable for several other ZF transmission models. The 4616.298.011 is directly compatible with the WG 65, WG 80, and WG 100 series. It also fits select WG 120 and WG 150 variants where the input shaft diameter matches. For proper installation, always pair this coupling with the correct HOUSING (4616301304) or HOUSING (4616301309) to ensure concentric alignment. Verify your transmission’s serial number against ZF’s compatibility chart before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101101 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011118 | HEXAGON SCREW | Fastener for coupling-to-housing attachment |
| 4616301304 | HOUSING | Intermediate housing for clutch pack |
| 4616301309 | HOUSING | Rear housing for output shaft support |
| 0630361069 | SEALING CAP | Prevents fluid leakage from housing ports |
| 0636011038 | HEXAGON SCREW | Mounting screw for housing flanges |
| 0636016015 | HEXAGON SCREW | High-tensile bolt for bell housing |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0634313118 | O-RING | Seal between coupling and shaft |
| 0636304019 | SCREW PLUG | Closes hydraulic test ports |
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