The complete fuel injection valve K 27200 is a precision assembly at the heart of the Sulzer ZV40/48 fuel system, responsible for delivering correctly timed, metered fuel into the combustion chamber. Built as a matched unit (body, needle/seat, springs, seals and mounting hardware), it’s engineered to withstand high pressure, rapid thermal cycling and aggressive fuels while producing an accurate spray pattern for efficient combustion. Because injection valves directly affect power output, emissions and fuel consumption, routine inspection, cleaning and replacement of worn seals or needles are vital — installing a factory-matched K 27200 assembly helps restore original performance and reduces troubleshooting time.