Description

Yamaha 242 LTD S 1800 Engine | Built for 2013–2015 Jet Boats

Give your jet boat a serious performance boost with a REV6 remanufactured engine that’s precision-built to outlast and outperform. Designed specifically for the 2013–2015 Yamaha 242 LTD S, this Build Core Engine undergoes a full remanufacturing process using upgraded internals and expert craftsmanship.

We don’t just rebuild—we engineer for maximum strength, efficiency, and long-term reliability on the water.

Engine Features & Component Upgrades

Every Yamaha 1800 engine we build includes precision-fit parts, upgraded materials, and strict quality control:

• Upgraded forged crankshaft assembly for stronger oil flow and higher durability
• Brand-new cylinder assembly designed for seamless OEM integration
• High-strength forged nitride valves for excellent wear resistance at high RPMs
• Manganese bronze valve guides for extended valve life and oil control
• Fully machined cylinder head, pressure tested for perfect seal and compression
• Heat-resistant valve stem seals that hold up under extreme conditions
• Factory-spec camshafts optimized for balance and efficiency
• Heavy-duty main and balance shaft bearings built for longevity
• Reinforced timing and oil pump chains for smoother engine operation
• Complete oil pump assembly and upgraded chain tensioner included
• Engine cases machined, cleaned, and inspected for cracks and fatigue
• Includes all required gaskets and seals for installation

Warranty Coverage You Can Count On

• 1-Year Standard Warranty – Every engine is backed for one year against failure
• 2-Year No-Fault Warranty Upgrade – For $450, get full engine replacement coverage, no questions asked

Want more details? Visit our Warranty Policy page.

Specialty Core Engine Requirements

This listing is for a Build Core Engine only. That means we use your supplied core as the foundation for the rebuild. We require that the core be in good, rebuildable condition—no missing components, cracks, or excessive wear.

To ensure a smooth process, review our shipping and core procedures.

Tested, Trusted, Proven

• Assembled by a certified technician, then rechecked by a second expert
• 50+ years of combined experience in high-performance engine building
• Real-world tested for marine conditions—freshwater and saltwater
• Nationwide shipping available right to your marina, shop, or garage

Next Steps

• Not sure if this fits your boat? Contact our team for fitment confirmation
• Need more guidance? Check our Engine Rebuild Kit Guide