Yamaha - Shift Rod Lever Shift Linkage System 6DV-44121-00-00. Overview. When shifting starts to feel off, this is one of the parts I check early. The shift rod lever handles the connection between your controls and the gearcase, so even a little wear can throw things out of sync. I've seen boats that won't fully engage gear just because this piece had play in it. Getting it back to spec makes shifting feel solid and predictable again.. Key Features. Precise Shift Movement Transfer - Converts control input into accurate gear engagement.. Heavy-Duty Metal Build - Designed to withstand repeated shifting and engine vibration.. Improves Shift Feel - Helps restore firm, clean transitions between gears.. OEM Exact Fit - Matches factory specifications for proper alignment and installation.. Engine & Boat Compatibility. Designed for Yamaha outboard engines with mechanical shift linkage systems. Commonly used on small to mid-range horsepower motors found on skiffs, center consoles, and fishing