Mercury - Shift Linkage Kit MerCruiser Bravo Series Precision Marine Hardware 8M0185784. Overview. There's a certain rhythm to boating that you learn over time-the slow glide into the marina, the gentle bump of the throttle as you ease into gear, the trust you place in every control point between you and the water. When that rhythm feels right, everything else on board just seems to follow. The Mercury 8M0185784 Shift Linkage Kit is one of those behind-the-scenes parts that quietly keeps your da