The 180371 Clip is designed for compatibility with Cummins engine models 4B3.9, 6B5.9, B3.3, 6C8.3, ISC, ISX, ISM, K19, K38, K50, QSK, M11, N14, NH, NT855, QST30, QSL9, V28, and V903, ensuring reliable performance and secure fitting.