Humminbird 7400931 MHX XNT Transom Mounting Hardware Kit Transom mount transducer hardware For replacement purposes For use with XNT 9 20 T, 9 QB 90 T, 9 SI 180 T, 9 QB 90, 9 20 transducers. Includes hardware for mounting XNT transducers and product manual Works with XNT 9 20, XNT 9 20 T, XNT 9 QB 90 T, XNT 9 QB 90, XNT 9 SI 180 T One year limited warranty 68 year limited warranty