The Cummins 3929537 is a genuine OEM exhaust manifold bolt designed for secure fastening of the exhaust manifold. This high-quality bolt features M10 x 1.50 threading and a length of 38mm (1.5 inches), ensuring a precise fit and reliable performance. It is compatible with a wide range of Cummins engines, including 4B, 6B, 4BT, 6BT, 6CT, 6L, ISB, ISC, ISL, ISM, ISX, QSB, QSC, QSL, QSM, and QSX series, making it an essential component for engine maintenance and repair.