Description

Premium Features & Upgrades

• Upgraded Forged Crankshaft Assembly – Improved oil flow and built for long-lasting durability.
• Brand-New Cylinder Assembly – OEM-level precision for dependable performance.
• Forged Nitride Valves – Engineered for high-RPM strength with reduced wear.
• Manganese Bronze Valve Guides – Outlast standard steel guides for longer service life.
• Re-machined Cylinder Head – Decked, shimmed, and leak-down tested to ensure a perfect seal.
• Heat-Resistant Valve Stem Seals – Withstand extreme heat without hardening or leaking.
• Factory-Spec Camshafts – Keep timing accurate for smooth operation and power.
• Upgraded Main & Balance Shaft Bearings – Deliver strength and reliability under heavy loads.
• Heavy-Duty Timing & Oil Pump Chains – Reinforced for maximum durability where it counts.
• Complete Oil Pump Assembly & Chain Tensioner – Maintain consistent oil pressure for long-term reliability.
• Precision-Machined Engine Cases – Thoroughly inspected and tested for cracks, wear, and strength.

Compatibility

Yamaha 242 LTD 1800 Jet Boat Engine – 2016 model year.

Warranty Coverage

All REV6 engines include our 1-Year Premium Warranty as standard protection. For maximum peace of mind, you can choose our 2-Year No-Fault Warranty for extended coverage. We stand behind every build with the best warranty in the industry.

Rebuilt the Right Way

Each Yamaha 242 LTD engine is hand-assembled by a master technician and verified by another to ensure accuracy. With over 50 years of combined powersports expertise, the REV6 crew builds engines that outperform factory standards in both strength and reliability.

Build Core Engine – What to Expect

This is a Build Core Engine. A solid, rebuildable core is required to start the process. Your core will be stripped, machined, and rebuilt with premium upgraded parts for superior performance and long life.

Have questions about your core? Visit our Help Center or get in touch with our team before ordering.

Take Action

Restore your Yamaha 242 LTD 1800 with confidence. Check our FAQ or use our Engine Rebuild Kit Guide for more information on available options. All engines ship nationwide for your convenience.

Thank you for choosing REV6 to handle your rebuild — we’re proud to earn your trust and deliver a stronger, longer-lasting engine.