Yamaha - Lower Unit Assembly - Gearcase Component - F300 4.2L V6 - F250 - F225 - LF300 - 6CE-45300-05-8D

Overview

The Yamaha Lower Unit Assembly | 6CE-45300-05-8D is built to deliver strong, consistent power transfer and reliable performance for high-horsepower Yamaha outboards. This assembly is what converts engine output into smooth propulsion, so when it starts to wear, you’ll feel it immediately—vibration, noise, or reduced efficiency. Designed for demanding marine conditions, it restores performance and keeps your engine running at its best.

Key Features

• High-Performance Power Transfer – Ensures smooth propulsion and responsive handling.

• OEM Fit Precision – Engineered to Yamaha specifications for seamless installation and alignment.

• Complete Gearcase Assembly – Pre-assembled for dependable operation and easier replacement.

• Corrosion-Resistant Construction – Built to withstand harsh saltwater and freshwater environments.

Engine & Boat Compatibility

• F250DET1X 2010
• F250XCA 2010-Current
• F225XCA 2010-Current
• F225NCA 2014-Current
• F225NCA2 Current
• F300XCA 2010-Current
• FL300BETX Current
• F300BETU Current
• F300BETX Current

FAQs

Q1: What are signs the lower unit is failing?
A: Grinding noise, vibration, water in gear oil, or reduced propulsion.

Q2: Can I repair instead of replacing the lower unit?
A: Minor issues can be repaired, but full replacement is often more reliable.

Q3: Does this come ready to install?
A: Yes, it’s a complete assembly designed for direct replacement.

Q4: Is this suitable for saltwater use?
A: Yes, it’s built with corrosion-resistant materials for marine environments.

Q5: Is installation difficult?
A: It’s manageable with experience, but proper alignment is critical.