Yamaha Lower Unit Assembly - F115 - 68V-45300-13-8D - See Description for Applicable Models MerCruiser-5-7L-TKS-MIE--Towsports-2009 or multi-level routing

or multi-level routing

Most boat owners can replace this filter in minutes with simple hand tools and their owner’s manual

Mechanical (Non-DTS) Compatible – Designed specifically for Mercury mechanical throttle and shift systems

Q4: Anything to avoid while routing it

Yamaha Lower Unit Assembly - F115 - 68V-45300-13-8D - See Description for Applicable Models MerCruiser-5-7L-TKS-MIE--Towsports-2009 or multi-level routingYamaha Lower Unit Assembly Gearcase & Drive System F115 68V 45300 13 8D Overview On a midrange engine like the Yamaha F115, the lower unit is doing the heavy work every time youre on the throttle. This assembly is built to restore smooth, reliable power transfer from the engine to the prop, helping your motor perform the way it should. If your current unit is worn or damaged, replacing it brings back steady operation, clean shifting, and dependable