Yamaha Replacement Reman 4Str Short Block F115Xa-Up

Replacement Powerhead for Yamaha® Outboards

Restore performance and reliability with this premium replacement powerhead, engineered to meet or exceed OEM specifications for Yamaha® outboard engines. Designed for smooth starts, crisp throttle response, and dependable long service life.

• OEM-fit replacement – direct bolt-on fit for select Yamaha® outboards*
• Quality-controlled assembly – precision-machined components and rigorous testing ensure durability
• Ready to install – fully assembled for quick, no-hassle installation

Core Charge & Easy Return

Important: On some powerheads, a refundable core charge applies in addition to the purchase price. Each product page clearly states whether a core is required. If required, the charge will be refunded once your used core is received and passes inspection. For full details, see our Core Policy under About Us.

• Included Return Label (if required): A prepaid shipping label is provided in the box for core returns. Simply reuse the packaging.
• Ship Your Core: Place your used, like-for-like Yamaha® core in the box, attach the label, and drop it off with the carrier.
• Refund: After inspection, your core charge is refunded and credited back to your original payment method.

*Fitment varies by model and year. Please confirm your exact Yamaha® outboard model and serial number for compatibility. Cores must be complete and rebuildable (no cracked blocks or severe damage) to qualify for refund. See our Core Policy for complete terms.