V Band Clamp 3972681 is compatible with a wide range of Cummins engines, including B3.3, 6B5.9, ISC, QSC, 6C8.3, ISL, QSL, L8.9, L9, QSB6.7, QSB3.3, N14, ISZ13, and QSZ13. It provides a tight, even clamp force for exhaust and intake connections. A reliable, reusable fastening solution made to OEM specs.