Overview
The ZF 4616.298.012 COUPLING is a critical driveline component engineered specifically for the WG 65 series transmission. This OEM genuine part, identified by SKU 4616.298.012, functions as the primary torque-transfer interface between the engine output shaft and the transmission input assembly. It absorbs torsional vibrations and ensures smooth power delivery under heavy-duty industrial loads. When paired with the 4616101101: TRANSMISSION HOUSING, this coupling maintains precise alignment and reduces mechanical stress on adjacent gear sets.
Symptoms of Failure
- Torque fluctuation under load: Worn splines or elastomeric elements cause erratic power transmission, especially during acceleration or hill climbs.
- Metallic grinding noise: Deteriorated coupling material produces a distinct scraping sound from the bell housing area, often misdiagnosed as gear wear.
- Vibration at specific RPM ranges: Imbalanced coupling creates resonant vibrations between 1200-1800 RPM, felt through the chassis and shift lever.
- Oil seepage near the input shaft: Failed coupling seals allow transmission fluid to migrate into the bell housing, leaving visible drips after operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Outer Diameter | 198 mm |
| Inner Spline Diameter | 42 mm |
| Overall Length | 112 mm |
| Material | High-tensile steel with nitrile rubber element |
| Weight | 2.8 kg |
| OEM Reference | ZF 4616.298.012 |
| Torque Capacity | 850 Nm |
Compatibility
This coupling is engineered for ZF WG series transmissions, specifically the WG 65, WG 80, and WG 100 models used in municipal trucks, fire apparatus, and construction equipment. It directly replaces OEM part 4616.298.012 in all WG 65 variants. For proper installation, ensure the 0636011118: HEXAGON SCREW is torqued to specification, and verify alignment with the 4616301304: HOUSING or 4616301309: HOUSING depending on your transmission variant. The coupling is not backward-compatible with pre-2005 WG 50 series units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101101 | TRANSMISSION HOUSING | Encloses and supports the gear train |
| 0636011118 | HEXAGON SCREW | Secures coupling to input shaft |
| 4616301304 | HOUSING | Front bearing support housing |
| 4616301309 | HOUSING | Rear bearing support housing |
| 0630361069 | SEALING CAP | Prevents debris ingress into coupling cavity |
| 0636011038 | HEXAGON SCREW | Mounting bolt for housing assembly |
| 0636016015 | HEXAGON SCREW | High-strength bolt for flange connection |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for coupling centering |
| 0634313118 | O-RING | Seals coupling-to-housing interface |
| 0636304019 | SCREW PLUG | Closes oil drain port in housing |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
