Cylinder head for Nissan M9R

The cylinder head, part number 771368682, serves as the upper closure for the engine block in Nissan M9R and M9T series engines. It is engineered to seal the cylinders, creating the combustion chamber where fuel ignition occurs. This component integrates the intake and exhaust ports, valve seats, and valve guides, while also providing the necessary mounting points for fuel injectors and glow plugs. The assembly ensures the proper containment of combustion gases and facilitates the flow of coolant and oil through dedicated channels to manage thermal loads during operation.

This component is compatible with Nissan M9R, M9R LEVAS/WITH, and M9T engine configurations. It maintains the structural interface required for a precise seal against the engine block when installed with a cylinder head gasket. By housing the valve train and managing gas exchange, the cylinder head is central to the engine's compression and overall mechanical efficiency. Proper installation is required to prevent pressure loss and fluid cross-contamination between the lubrication and cooling systems.