Yamaha - Lower unit assembly - F100 - 6D9-45300-15-8D - See Description For Applicable Model Mercury-300HP-4-6L-V8-Racing-2021 Compatible with Mercury Gen II

Compatible with Mercury Gen II SAE mechanical installations requiring a 20-foot Platinum Plus throttle and shift cable

Heavy-gauge PVC bladder with heavy-duty full nylon cover

5-Way Junction Box Required – Sold separately for proper SmartCraft network connection

6F5-81830-11-00 - FRONT COVER ASS'Y

Helm-tilt dual50c

Yamaha - Lower unit assembly - F100 - 6D9-45300-15-8D - See Description For Applicable Model Mercury-300HP-4-6L-V8-Racing-2021 Compatible with Mercury Gen IIYamaha Lower Unit Assembly Gearcase Component F100 6D9 45300 15 8D Overview The Yamaha Lower Unit Assembly 6D9 45300 15 8D is what keeps your engines power translating into smooth, reliable movement on the water. When a lower unit starts to wear or fail, youll feel it immediatelygrinding noise, vibration, or reduced performance. This assembly handles the full transfer of power from the engine to the propeller, so everything depends on it being solid