Exhaust Manifold Inlet Flange. The manifold inlet flange is manufactured through a casting process, is non-ductile, and contains a carbon content of 0.03% and a manganese content of 0.25%. The manifold inlet flange is a component of an exhaust manifold that will be attached to a Chevrolet Corvette C8 LT2 mid-engine. Specifically, the manifold inlet flange will be used on the hot side of a car’s gasoline engine. The manifold will be positioned between the car’s engine cylinder head and catalytic converter. Functionally, the manifold will guide the hot exhaust gas from the engine into the catalytic converter. The manifold inlet flange is specifically designed to be used with the Chevrolet Corvette C8 LT2 mid-engine.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N320711