1、Applicable Model: Brush holder is fit for 40hp outboard engine starter motor, please confirm whether your model is applicable before buying. 2、OE Number: The part number of starter motor brush holder for reference is 66T 81840 00, please confirm whether it is consistent with the OE you need. 3、Lasting Durability: Marine brush holders are designed to withstand the harsh marine environment. They are made from metal alloy and pure copper coil, ensuring longevity and minimal maintenance. 4、Improved Performance: They assure efficient performance of the electric motors in your boat, enhancing the conductivity and ensuring a stable connection between brushes and commutator. 5、Easy Installation: Outboard starter brush holder is easy to install, direct replacement, reducing the time and effort of replacement and installation.