Description

Performance-driven. Expertly rebuilt. Ready for the water.

The Yamaha 275SDX 1800 Jet Boat deserves an engine that matches its reputation. At REV6, every build core is remanufactured with upgraded internals and careful machining, giving you power and dependability far beyond factory stock. Our engines are not only inspected but also precision tested to guarantee top-level performance.

Key Features & Upgrades

• Forged Crankshaft Assembly – Designed for stronger oil flow and long-lasting durability.
• Brand-New Cylinder Assembly – Built for OEM compatibility and smoother operation on the water.
• Forged Nitride Valves – Higher resistance to wear and improved strength at high RPMs.
• Manganese Bronze Valve Guides – Extended service life with reduced oil consumption.
• Fully Machined Cylinder Head – Decked, shimmed, and leak-down tested to ensure a perfect seal.
• Heat-Resistant Valve Stem Seals – Protect against extreme temperatures without hardening.
• Factory-Spec Camshafts – Maintains proper timing and efficiency.
• Heavy-Duty Bearings & Chains – Main, balance shaft, and timing/oil pump chains reinforced for reliability.
• Complete Oil Pump Assembly & Chain Tensioner – Keeps lubrication steady under demanding conditions.
• Inspected Engine Cases – Machined and tested to eliminate cracks or structural weakness.

Every kit includes the gaskets and seals needed for installation.

Compatibility

Built specifically for the Yamaha 275SDX 1800 Jet Boat, model year 2023.

Warranty Confidence

• 1-Year Warranty – Standard protection with every REV6 engine.
• Optional 2-Year No-Fault Warranty ($450) – Complete coverage with no questions asked.

Why Choose REV6?

Each engine goes through a two-step check system—assembled by one technician, then verified by another. With more than 50 years of combined experience, our team ensures that every engine is ready to deliver reliable horsepower when you need it most.

Build Core Engine Notice

This listing is for a Build Core Engine, not a ready-to-install unit. A clean, rebuildable core is required as the foundation for remanufacturing.

During the rebuild process, the engine is fully disassembled, inspected, machined, and reassembled with new or reconditioned components. To guarantee performance, your core must be complete, free of cracks, and without excessive wear. If you have questions about what qualifies, contact our team or visit our Help Center for details.

Take the Next Step

Upgrade your Yamaha 275SDX with a proven REV6 build. Review our warranty terms, check the FAQ section, or reach out today. Not sure where to begin? Our Engine Rebuild Kit Guide can help you make the right choice.