Description

Yamaha GP-R HO 1800 WaveRunner Engine 2020–2023 | Built to Last

Take your WaveRunner to the next level with the Yamaha GP-R HO 1800 engine, designed for riders who demand power and reliability. At REV6, every build is carefully remanufactured to meet OEM standards and keep you on the water longer. With expert assembly, precision machining, and a one-year warranty, this engine delivers confidence with every throttle hit.

Engine Rebuild Features

• Standard No-Fault 1-year warranty with an optional 2-year No-Fault Warranty upgrade.
• We restore and reuse as many OEM parts as possible. We inspect and refurbish all OEM parts to guarantee high quality internals that keep your machine running reliably.
• All components are cleaned, dismantled, inspected and repaired as needed.
• Cylinder head inspected, cleaned, sandblasted, decked, rebuilt to manufacturer spec and undergoes a quality inspection.
• Valve guides inspected and replaced as needed.
• Valves and valve seats are recut/refaced to ensure tight seal, verified with vacuum test.
• Camshafts lobes and journals cleaned and polished, replaced as needed.
• Refurbished crankshaft.
• Cylinder block is inspected for damage. If the bore is worn or damaged, requiring replating or sleeving, there will be additional fees incurred.
• Pistons replaced with a new pistons and rings.
• Timing chain inspected for stretch and wear, replaced as needed.
• Fully inspected engine cases, tested for cracks, holes, or excessive wear.
• All gaskets and seals replaced.
• Engine assembled and torqued to manufacturer specifications.

Once your engine passes our quality control inspection, we will ship your new Rev6 rebuilt engine back to you!

Note: This is a generalized list and may include more or less, depending on the needs for your specific model or core.

Build Core Notice:

NOTE: THIS IS A BUILD CORE ONLY ENGINE.

This listing is for a build core engine, which means we require your old, rebuildable core to serve as the foundation for your new engine. A build core is a used engine that undergoes a complete remanufacturing process, including disassembly, inspection, machining, and rebuilding with new or refurbished components. The quality of the core directly impacts the final engine’s performance and reliability. To ensure a successful rebuild, we need a complete, undamaged core with no excessive wear, cracks, or missing components.

Why Choose REV6?

With over 35 years of engine expertise, REV6 goes beyond simple rebuilds. We remanufacture each engine with new and reconditioned components, expert assembly, and rigorous quality control. You’ll also benefit from fast, nationwide shipping and the option to extend your coverage with our Platinum “No Fault” warranty. Learn more in our FAQ section or reach out through our contact page.

Take Action

Ready to restore your Yamaha GP-R HO 1800 WaveRunner to peak performance? Get started with REV6 today. For more guidance, check out our Engine Rebuild Kit Guide or call our team for custom solutions. Thank you for trusting us to keep your machine running at its best—we take pride in every build we ship out.