Genuine, OEM Kohler Replacement Part Kohler replacement valve, exhaust, part number 12 016 01-S Genuine Original Equipment Manufacturer (Oem) Parts! This Exhaust Valve (Part Number 12-016-01-S) Is For Lawn And Garden Equipment Engines. Exhaust Valve 12-016-01-S Opens During The Exhaust Stroke To Let Out Spent Fuel From The Cylinder. Let The Engine Cool Before Installing This Part. Wear Work Gloves To Protect Your Hands.