The John Deere TCA20554 is a genuine OEM interlock switch designed to ensure the safe operation of John Deere lawn and garden equipment. This critical safety component prevents unintended machine functions by requiring specific conditions to be met before operation. It is compatible with a range of John Deere models, including the X300, X304, X305R, X310, X320, X324, X330, X340, X350, X350R, X354, X370, X380, X384, X390, X394, X500, X520, X530, X540, X570, X580, X584, X590, Z335E, Z345M, Z345R, Z355E, Z355R, Z375R, Z525E, Z535M, Z535R, Z540M, Z540R, Z545R, Z550R, Z560R, Z570R, Z580R, Z590R, Z710A, Z720A, Z730M, Z730R, Z740R, Z760R, Z910A, Z915B, Z920A, Z920M, Z920R, Z925A, Z925M, Z930A, Z930M, Z930R, Z950A, Z950M, Z950R, Z960A, Z960M, Z960R, Z970A, Z970R, and Z997R. This OEM part guarantees optimal fit and performance, maintaining the integrity of your equipment's safety systems.