Overview
The ZF 4646.153.457 COUPLING is a critical torque-transfer component engineered for the WG 250, WG 260, and WG 310 series transmissions. This OEM genuine part sits directly between the transmission housing and the output shaft assembly, ensuring precise rotational alignment and dampening torsional vibrations during heavy-duty operation. As a direct-fit replacement, the SKU 4646.153.457 maintains the original ZF load-bearing specifications, preventing premature wear on adjacent drivetrain elements. When paired with a properly sealed TRANSMISSION HOUSING, this coupling guarantees consistent power delivery under high-torque conditions.
Symptoms of Failure
- Transmission oil leaks near the coupling housing – Worn seals on the 4646.153.457 coupling allow fluid to escape, often visible as drips around the WG 260 series bell housing.
- Gear slipping under load in WG 310 models – A degraded coupling loses its clamping force, causing intermittent power loss during acceleration or hill climbs.
- Abnormal driveline clunking on gear engagement – Excessive play in the coupling produces a metallic knock when shifting from neutral to drive in WG 258 series transmissions.
- Vibration at highway speeds in WG 308 series – Unbalanced coupling wear creates harmonic vibrations that intensify above 45 mph, often misdiagnosed as wheel imbalance.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4646.153.457 |
| Outer Diameter | 185 mm |
| Inner Diameter | 65 mm |
| Thickness | 42 mm |
| Material | Hardened alloy steel with nitrile rubber dampener |
| Weight | 2.8 kg |
| OEM Reference | ZF 4646.153.457 |
| Torque Capacity | 1,200 Nm |
| Operating Temperature | -40°C to +120°C |
Compatibility
This coupling is specifically designed for ZF WG-series transmissions with a 6-bolt output flange pattern. Verified compatible models include the WG 258, WG 260, WG 261, WG 308, WG 310, and WG 311 series. It also retrofits into earlier WG 180 and WG 200 variants when used with the correct HOUSING adapter. For proper installation, always replace the 螺栓 (bolts) and verify the TYPE PLATE matches your transmission’s serial number to avoid misapplication.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101162 | TRANSMISSION HOUSING | Encloses gear train and supports coupling alignment |
| 4646301334 | HOUSING | Rear adapter housing for output shaft interface |
| 0636115293 | 螺栓 | M12 flange bolts for coupling-to-housing fastening |
| 0730365125 | TYPE PLATE | Identification plate for transmission model verification |
| 4646201003 | POT | Torque converter oil pot for hydraulic circuit |
| 4646106024 | SHIFT SYSTEM | Hydraulic shift actuator assembly |
| 4646306071 | GASKET | Sealing gasket between coupling and housing |
| 4646306072 | ADAPTER PLATE | Mounting plate for coupling-to-transmission interface |
| 4646306073 | GASKET | Secondary sealing gasket for adapter plate |
| 0636102065 | CAP SCREW | M10 cap screws for adapter plate retention |
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