Description

This Yamaha SX240 1800 HO +.50mm engine rebuild kit fits 2013–2015 jet boat engines that need oversize pistons to correct cylinder wear. Instead of mixing parts, this kit groups the correct components for a +.50mm bore rebuild.

Because bore wear varies from engine to engine, oversize pistons become necessary once standard sizing no longer works. Therefore, this kit focuses on proper piston sizing, sealing, and timing components needed during reassembly.

This Kit Includes

• Cam chain – 94591-66152-00
• Cam chain damper guide – 6BH-12251-00-00
• Cam chain tension guide – 6BH-12252-00-00
• Cam chain upper guide – 6BH-12241-00-00
• Complete gasket kit – 6CR-W0001-01-00, 6CS-W0001-01-00, 6HM-W0001-00-00, 6HM-W0001-01-00
• Oversize +.50mm piston kits – 6BH-11631-00-B0
• Connecting rod bearings (black) – 6S5-11656-50-00
• Crankshaft bearings (green) – 6S5-11416-40-00

In addition, every component ships backed by a 1-year REV6 parts warranty. For coverage details, review our warranty policy. If questions come up during your rebuild, our FAQ page and Help Center explain common fitment and install topics.

If you want deeper rebuild tips, the REV6 blog covers common Yamaha 1.8L wear patterns and rebuild planning. However, if you prefer direct support, contact our team and we’ll help confirm sizing before you order.

People also search:

Yamaha SX240 1800 HO Jet Boat Complete Engine Rebuild Kit +.50mm 2013–2015

TAKE ACTION
If your SX240 1800 HO engine shows moderate to heavy cylinder wear, this +.50mm rebuild kit supplies the matched parts needed for proper bore correction. Order now and rebuild with confidence using parts designed to work together.

REV6 proudly supports veterans and active service members. Ask about available discounts.