1、Fitment: 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. 2、OEM: 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. 3、Practical 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. 4、More 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. 5、Convenient 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.