Cummins 1003020FA060 Exhaust Manifold Gasket

The Cummins 1003020FA060 exhaust manifold gasket is engineered to seal the joint between the exhaust manifold and cylinder head on M11, ISM11, and QSM11 series diesel engines. Constructed from multi-layer steel (MLS) with high-temperature coating, it withstands extreme thermal cycling and exhaust gas pressure up to 1,200°C peak temperatures. This gasket corresponds to Cummins service part number 5486657 per the M11/ISM/QSM11 parts catalog. It features precision-stamped bolt holes and embossed sealing beads to maintain clamp load retention under heavy-duty operating cycles. Designed for direct replacement without modification, it restores factory exhaust sealing performance and prevents exhaust leaks that degrade turbocharger efficiency and increase emissions.