Kohler 2541820-S Oxygen Sensor Assembly

The Kohler 2541820-S is a heated zirconia oxygen sensor designed for closed-loop fuel control on Kohler Electronic Fuel Injection (EFI) engines. It features an M12 x 1.25 mounting thread and a dedicated connector for direct OEM fitment. The sensor provides real-time exhaust gas oxygen concentration feedback to the engine control unit (ECU), enabling precise air-fuel ratio management for emissions compliance and optimal performance. This part supersedes Kohler 2541815-S and cross-references Briggs & Stratton 593870. It is engineered for high-temperature durability and rapid light-off response in commercial turf and utility equipment operating cycles. Construction includes a stainless steel housing, ceramic sensing element, and high-temperature lead wire assembly.