307442 OMC ARM

OMC high-speed valve arm part number 307442 for Johnson/Evinrude carburetors. This is the needle valve lever that controls fuel mixture at high engine speeds. Found in 3 HP and 33-40 HP outboard models from the 1960s-1970s, including Evinrude Lightwin 3532A. Brass or steel construction; operates with carburetor linkage to regulate fuel flow. OEM replacement part for vintage engine rebuilds and carburetor overhauls.