The Cummins 4BT3.9 engine gasket set contains various essential components for the maintenance and repair of the engine. The box includes:

• Cylinder gaskets (4 pieces) with yellow protection
• Sealing gaskets made of various materials and shapes
• Seal ring sets
• Various washers and metal gaskets
• Cover gasket and other necessary components for assembly

This complete set is ideal for ensuring a proper and efficient seal for the Cummins 4BT3.9 engine, providing all the necessary parts for a quality repair.