Description

When it’s time to breathe new life into your Yamaha SX 190, you need an engine that’s built tough and proven to last. REV6 delivers just that with our SX 190 1800 Jet Boat engine build core for 2013–2015 models. Every unit is precision remanufactured by skilled technicians, ensuring strength, reliability, and long-term performance.

Premium Features & Upgrades

Each engine build core goes through a complete teardown, machining, and upgrade process. Your engine includes:

• Upgraded Forged Crankshaft Assembly – Improved oil flow, strength, and durability
• Brand-New Cylinder Assembly – OEM-compatible for smooth operation
• High-Strength Forged Nitride Valves – Built to handle high RPM without wearing down
• Manganese Bronze Valve Guides – Longer life and reduced oil use
• Fully Rebuilt & Machined Cylinder Head – Decked, shimmed, and leak-tested
• Heat-Resistant Valve Stem Seals – Withstand extreme heat without hardening
• Factory-Spec Camshafts – Maintain timing and efficiency
• Upgraded Main & Balance Shaft Bearings – Engineered for reliability
• Heavy-Duty Timing & Oil Pump Chains – Stronger and longer-lasting
• Complete Oil Pump Assembly & Chain Tensioner – Keeps oil moving where it should
• Inspected & Machined Engine Cases – Checked for cracks and wear

Build Core Engine – What This Means for You

This listing is for a Build Core Engine. That means it’s not an off-the-shelf ready-to-install motor. Instead, we take your good, rebuildable core and remanufacture it into a better-than-new engine. Your core must be free of excessive wear, cracks, or missing parts for us to process it correctly.

Returning your core is essential to keeping this process moving. For details on what qualifies, you can review our Help Center.

Warranty You Can Count On

Every engine is backed with confidence:

• 🛠 1-Year Warranty Included – Standard with every build.
• 🛠 2-Year No-Fault Warranty Option – For $450, get total coverage; we’ll replace your engine no questions asked.

For full coverage details, check out our warranty terms.

Built by Experts, Tested for Reliability

At REV6, we combine decades of hands-on experience with strict quality standards. Each engine is assembled by one master technician and inspected by another before leaving our facility. That’s how we guarantee every jet boat engine we ship nationwide meets or exceeds OEM expectations.

Need guidance on fitment or rebuild kit choices? Visit our Engine Rebuild Kit Guide for help.

Still have questions? Head over to our FAQ section or reach out directly — our team is here to make sure your build goes smoothly.