The complete inlet valve, coded K 27500, is a fundamental component of the air intake system in the ZV40/48 diesel engine. This valve governs the flow of fresh air into the combustion chamber, opening at precisely timed intervals to ensure optimal fuel-air mixture and efficient combustion. Built to endure extreme thermal and mechanical stress, the complete assembly includes the valve spindle, guide, springs, and seating surfaces. Its flawless operation is key to maintaining engine power, fuel efficiency, and smooth running under both marine and industrial load conditions.