This Four Seasons 36557 Engine Cooling Fan Switch replaces ACDelco 155955, ACDelco 1711411, ACDelco 212812, ACDelco 5097, ACDelco 801966, ACDelco MT0546, ACDelco SW8522, ACDelco TU188, Global Parts Distributors LLC 1711411, Santech MT0546, UAC SW8522, Ranshu 212812, Gilmore Products 801966, Ready-Aire 5097, Wells TU188, OEM parts and is perfect for replacement or a performance upgrade. .