LF250-LF300 (2010-2021) Yamaha Counter Rotation Lower Unit with 30″ Driveshaft – Replaces OEM 6CF-45300-16-8D

The SEI Marine SE430 Counter Rotation Lower Unit is specifically designed as a direct aftermarket replacement for Yamaha LF250 and LF300 outboard motors manufactured between 2010 and 2021. Precisely matching the original Yamaha OEM part number 6CF-45300-16-8D, this unit ensures compatibility and easy installation with a 30-inch driveshaft length and a gear ratio of 1.75:1.

✅ Key Features:

• ⚙️ Exact OEM Fit: Compatible with Yamaha LF250UCA and LF300UCA (2010-2021).
• Counter Rotation: Perfect for twin-engine configurations, enhancing boat stability.
• ️ Reliable Construction: Built using marine-grade materials to endure harsh saltwater environments.
• Gear Ratio: 1.75:1 ensures efficient performance matching original Yamaha specifications.
• Driveshaft Length: 30 inches – ideal for standard transom height configurations.
• ️ Industry-Leading Warranty: 3-Year Fault-Free Warranty covering even accidental damage, including impact, fishing line entanglement, oil issues, and more.

✅ Compatibility:

✅ Important Notes:

• ❌ Not suitable for engines with two-piece driveshaft configurations.
• ❌ Not compatible with engines featuring Yamaha’s Thrust Enhancing Reverse Exhaust (TERE).

✅ Technical Specifications (Rich Snippets Ready):

• Brand: SEI Marine
• Part Number: SE430
• OEM Part Number: 6CF-45300-16-8D
• Product Type: Counter Rotation Lower Unit
• Gear Ratio: 1.75:1
• Driveshaft Length: 30-inch
• Rotation Type: Counter Rotation (Left-Hand Rotation)
• Warranty: 3-Year Fault-Free Warranty
• Material: Corrosion-resistant marine-grade aluminum

✅ Frequently Asked Questions (FAQs):

Q1: Is this lower unit compatible with all Yamaha LF250 and LF300 models? A: It is specifically designed for LF250UCA and LF300UCA models (2010–2021). Check your specific model and year for exact compatibility.

Q2: What is included with this lower unit? A: The SE430 includes the lower unit casing, internal gears, and 30-inch driveshaft. Propeller and installation hardware are not included.

Q3: Does installation require professional assistance? A: Professional installation is highly recommended to ensure optimal performance and to validate the warranty.

Q4: How does the SEI warranty compare to OEM warranties? A: SEI offers an industry-leading 3-Year Fault-Free Warranty that even covers damage from accidental impacts, offering superior coverage compared to typical OEM warranties.

Q5: Can this lower unit handle saltwater conditions? A: Yes, the SE430 is manufactured with corrosion-resistant materials ideal for harsh saltwater conditions, ensuring durability and reliability.

Q6: What maintenance does this lower unit require? A: Routine maintenance includes regular gear oil changes, checking seals, and inspection for fishing line entanglement or propeller damage.

Q7: Can I use my existing propeller with this lower unit? A: Yes, it is compatible with OEM-standard Yamaha propellers designed for LF250-LF300 models (2010-2021).

✅ What’s Next:

Order the SEI Marine SE430 Lower Unit today and experience dependable performance backed by an exceptional 3-Year Warranty. Upgrade your Yamaha outboard confidently.