Product Description

2026 Mercury Racing 520 CC/DTS Engine Only – 520 HP High-Performance Sterndrive Power

The 2026 Mercury Racing 520 CC/DTS is a naturally aspirated, 8.6L V8 sterndrive engine that brings racing-inspired performance to recreational boaters at a more affordable price point. Positioned perfectly between the MerCruiser 8.2L MAG HO and the Mercury Racing 525 EFI, the 520 delivers 520 horsepower, enhanced torque, and smooth acceleration for an unmatched on-water experience.

Mercury Racing engineered the 520 using a precision CNC-machined cylinder block, a premium forged crankshaft, and Mercury Racing cylinder heads for maximum durability and reliability. Its multiport fuel injection system and electronic throttle body optimize fuel delivery and performance, while the closed-cooling system ensures longevity and reduced maintenance.

The Digital Throttle & Shift (DTS) system provides instant, precise, and smooth control, making every ride effortless. Built to run on 87 octane fuel while meeting EPA and CARB emissions standards, the Mercury Racing 520 combines high performance, fuel efficiency, and compliance in one powerhouse package.

🔹 Key Features & Benefits :

1. 520 HP Naturally Aspirated V8 – Big power with smooth, reliable performance.
2. 8.6L Displacement (523 CID) – Enhanced torque and acceleration for all RPM ranges.
3. Digital Throttle & Shift (DTS) – Instant response and precise handling.
4. Closed-Cooling System – 5-year coolant life with superior corrosion resistance.
5. Forged Micro Alloy Crankshaft & CNC Block – Built for strength and balance.
6. Engine Guardian Monitoring System – Protects against potential damage.
7. EPA & CARB Compliant – Meets U.S. emissions standards.
8. 2-Year Factory Warranty – Peace of mind with Mercury Racing quality.

🔹 Technical Specifications :

🔹 Why Choose the Mercury Racing 520 CC/DTS?

If you want high-performance boating without the premium cost of top-tier racing engines, the Mercury Racing 520 is your answer. With its broad torque band, improved bore design, and precision engineering, this engine delivers explosive hole shots, strong midrange punch, and consistent power across all RPMs.

Whether powering a performance cruiser, offshore boat, or racing-inspired setup, the Mercury Racing 520 provides the perfect balance of value, reliability, and raw power. Backed by a two-year factory warranty, it’s a sterndrive built to keep you on the water longer, faster, and with confidence.