Part 3973422 is an exhaust manifold designed for Cummins ISB6.7, QSB6.7, QSB7, and NT743 engines. It resists thermal cracking and keeps exhaust flow consistent. Built to OEM standards for reliable operation and durability.

similar parts

    • Fast Delivery

      Fast shipping. Global reach.

    • 30 days return policy

      Order without worry

    • Professional support

      Expert support for every part you need.