OMC Evinrude Johnson Valve Seat

The part number 321226, in the context of OMC Evinrude and Johnson outboard engines, refers to a valve seat. Valve seats are the hardened surfaces in the cylinder head where the intake and exhaust valves seal, ensuring proper combustion and compression within the engine. They are typically made from a durable material like hard cast iron or pressed into the cylinder head for optimal sealing.