ZF 0501.221.398 VIBR.ABSORBER for WG260/WG310 | OEM Genuine Part

Overview

The ZF 0501.221.398 VIBR.ABSORBER is a critical damping component engineered specifically for the WG260 and WG310 series transmissions. This OEM genuine part functions as a torsional vibration damper, strategically positioned within the drivetrain assembly to neutralize harmonic oscillations generated during gear shifts and load changes. By absorbing destructive vibrations before they propagate through the gearbox, the 0501.221.398 protects planetary gear sets and shaft bearings from premature fatigue. This SKU 0501.221.398 is manufactured to ZF’s original specifications, ensuring precise mass and damping characteristics that aftermarket copies cannot replicate.

Symptoms of Failure

• Transmission housing vibration at idle: When the 0501.221.398 loses its damping capacity, operators will feel excessive shaking through the chassis when the vehicle is stationary in gear, often misdiagnosed as engine mount failure.
• Gear engagement clunking: A worn vibration absorber allows driveline lash to transmit as audible metallic impacts during forward-to-reverse shifts, particularly under light throttle.
• Oil contamination with rubber particles: Deterioration of the elastomeric damping element sheds debris into the transmission fluid, visible as black specks on the dipstick or during oil changes.
• Premature bearing noise: Unchecked vibrations accelerate wear on input shaft bearings, producing a whining sound that increases with engine RPM.

Technical Specifications

Compatibility

This vibration absorber is primarily specified for the ZF WG260 and ZF WG310 series transmissions found in medium-duty commercial vehicles and construction equipment. Based on its damping characteristics, it may also be compatible with the WG180 and WG200 series when used in applications with similar torque converter resonance profiles. Always verify the existing part number before ordering, as the WG250 series uses a different absorber profile. For complete assembly integrity, this part should be installed alongside the 0636115293 螺栓 and 0736300232 螺栓 that secure the damper hub to the input shaft. The 4475280208 SCREW PLUG must be torqued correctly to seal the hydraulic circuit, and a new 0634316523 O-RING is mandatory to prevent fluid bypass around the absorber assembly.

Related Components

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