Description High Velocity Dual-Flow Lube Spin-on. Venturi-Type Cone. Thread 2-1/4-12, OD 4-21/32, Length 11-13/32. Cummins Engines. Replaces: Cummins 3401544 This item is a suitable alternative for the following: BD7309, 3401544, 366700A1, 84485647, DSBD7309