The 3902451 Hexagon Flange Head Cap Screw is engineered for durability and precise fitment on Cummins engines, including ISB, QSB, 4B3.9, 6B5.9, 6C8.3, B3.3, B4.5, F2.8, F3.8, ISC, L9, N14, NH, NT855, and ISX11.9/12 models.

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