Yamaha - Lower unit Assembly - F115 - 68V-45300-34-8D - See Description For Applicable Models Mercury OEM Phantom Black Paint • Maintains Proper Water Pump

• Maintains Proper Water Pump Operation – Supports stable positioning of cartridge components

and proven to keep engines and metal gear looking their best

or inconsistent running—this is often where the issue lives

FAQQ1: How do I know I need this cap

and fatigue under heat and load

Yamaha - Lower unit Assembly - F115 - 68V-45300-34-8D - See Description For Applicable Models Mercury OEM Phantom Black Paint • Maintains Proper Water PumpYamaha Lower Unit Assembly Gearcase & Drive System F115 68V 45300 34 8D Overview On early Yamaha F115 models, the lower unit is what keeps your power consistent and your ride smooth. This assembly is designed to restore proper power transfer from the engine to the prop, helping your outboard perform reliably on the water. If your current unit is worn, noisy, or not shifting cleanly, replacing it brings back that steady, dependable operation you expect