1Fitment: Manufactured according to the original standard specifications, perfect replacement for Marine 89?818997A1 89?818997A2 89?818997T1 89?818998A1 89?818998A2 89?850187A1 89?850187T1, replacement for 65W?81941?00?00 65W?81941?01?00. 2Oem: The OEMs of our electromagnetic relay are 89?850187A1, 89?850187T1, 89?818998A1 for reference, please check the part number of your item before purchasing. 3Practical Function: The starter relay will provide high cranking power and reduce startup switch electric current, it functions as a transistor, but uses electromagnetic solenoids instead of semiconductors to perform switching. 4More Durability: The starter relay solenoid switch is made from firm Abs and metal, so its outer shell is both robust and anti rust, which can provide a lasting use. 5Convenient Installation: Manufactured to precisely meet all the specifications, the size of the socket or interface of the relay is exactly matched and can be installed directly without any adjustment.