Malibu BW-5 Bronze Coupler - 5" x 1-1/8" Tapered BoreUpgrade or replace critical drivetrain hardware with the Malibu BW 5 bronze coupler, built for dependable fit and performance in demanding marine environments. Designed for underwater and inboard applications, this coupler features a corrosion resistant bronze construction and a precision tapered bore to help ensure secure alignment and power transfer between shaft and driveline components. Model: Malibu BW 5 Material: Bronze (marine grade corrosion