Cummins 6B 3924435 Damper PAI 202013CROSS REFERENCE: 3924435 APPLICATION: Cummins 6B 5. 9 Multiple Use Application. DETAILS: Vibration Damper With Serpentine 8 Grooves Pulley 9. 25in Od With 2 Timing Notches On The Outer Damper For The Timing Sensor To Read. BRAND: PAI 202013 Cummins 6B 3924435 Damper PAI 202013. Heavy duty parts and diesel truck parts. Maintains vibration stability and supports engine balance. All components are proudly manufactured in the U. S. A. by PAI Industries