Exhaust Manifold Set Dodge Cummins 5.9L

The Exhaust Manifold Set Dodge Cummins 5.9L is a precision-engineered gasket assembly designed to seal the critical joint between your engine's exhaust manifold and cylinder head. Built by MAHLE ORIGINAL/CLEVITE—OEM-trusted suppliers for heavy-duty diesel engines—this six-piece set addresses one of the most common leak points in Cummins powerplants. Whether you're rebuilding after manifold repair, replacing worn factory gaskets, or preventing exhaust leaks on high-mileage equipment, this set ensures a reliable, long-lasting seal on your 5.9L Cummins application.

Each gasket in this multi-layer steel design combines the durability and thermal resistance required for diesel exhaust conditions, where temperatures and pressure cycling demand superior material properties. The stock-port configuration matches OEM manifold dimensions precisely, eliminating fitment guesswork and ensuring a factory-spec seal without port mismatch or edge gasket blow-out. Multi-layer steel construction allows controlled compression and recovery, maintaining port alignment under thermal cycling while resisting the corrosive byproducts of diesel combustion. The set of six gaskets covers all runner ports on the manifold, so you have spares for complete replacement or future service intervals.

Dodge Cummins 5.9L owners—from light-duty pickups to commercial haulers—benefit most from preventive gasket replacement during manifold service, head gasket work, or turbo servicing. Leaking manifold gaskets allow unburned fuel and exhaust gases to escape externally, reducing efficiency and creating rough idle or black smoke symptoms. Installation requires removing the exhaust manifold, cleaning port surfaces, and seating gaskets with proper torque sequence. This set represents a cost-effective insurance policy against repeat manifold removal and the downtime associated with external exhaust leaks.