Mercury 300CXXL 300HP – Verado Four Stroke Counter Rotation 30-Inch

Mercury 300CXXL Verado 300HP V8

The Mercury 300CXXL Verado is an 300HP FourStroke V8 outboard engineered for maximum offshore refinement and precision on ultra-high transom vessels in the United States. Built on a 4.6L 32-valve DOHC architecture and weighing 612 lbs, this engine features the Advanced MidSection (AMS) and integrated electro-hydraulic power steering. This 30-inch ultra-long shaft model is configured for counter-rotation, making it the premier port-side choice for triple or quad-engine offshore center consoles. Our dependable outboard propulsion systems is designed to support the vibration-free performance and digital authority required for long-range coastal navigation.

Operational peak performance for the Mercury 300HP Verado is aggressively maintained between 5200 and 6000 RPM. The 1.75:1 gear ratio, combined with the Advanced MidSection cradle mount, translates the V8 torque into incredibly smooth and silent acceleration. Manufactured in the USA, this corrosion-resistant marine engine incorporates SmartCraft DTS technology to helps support a silky-smooth, cable-free shifting experience across turbulent offshore swells.

Technical Specifications of Mercury 300CXXL Verado

- The 4.6L V8 32-valve DOHC architecture delivers unparalleled displacement and strong low-end torque for heavy offshore loads.
- Advanced MidSection (AMS) provides a specialized cradle-mount system that eliminates 60% of engine vibration and noise.
- Counter rotation left-hand drive helps support perfectly balanced steering and tracking in multi-engine boat configurations.
- Integrated Electro-hydraulic power steering offers hyper-responsive, automotive-like control even in rough coastal conditions.
- A 115 Amp alternator delivers 1449 Watts of charging power, the highest in its class for complex marine navigation suites.
- SmartCraft Digital Throttle & Shift (DTS) provides instantaneous helm responsiveness without mechanical cable friction.

Advanced MidSection (AMS) Engineering

The Verado series is defined by the Advanced MidSection, which isolates the powerhead from the transom using specialized mounts. This provides a significant reduction in noise and vibration, ensuring that offshore anglers and cruisers enjoy a whisper-quiet ride during long transits through the American saltwater environment.

Ultra-Long 30-Inch Propulsion

The 30-inch ultra-long shaft is purposefully designed for offshore high-transom vessels requiring maximum propeller depth. This configuration prevents cavitation in large offshore swells and helps support consistent forward thrust on the heaviest deep-V hulls navigating unpredictable coastal waters.

Integrated Power Steering

Unlike conventional outboards, the 300HP Verado features integrated electro-hydraulic power steering. This system eliminates external steering rams and provides hyper-responsive, precision control, which is vital when maneuvering vessels in tight marinas or navigating high-speed coastal runs.

115A High-Output Charging

Equipped with a 115 Amp alternator, the Verado provides class-leading charging power. This robust output is essential for modern offshore boats equipped with multiple high-definition displays, radar, and gyrostabilizers, ensuring your battery bank remains healthy throughout the day.

Mercury 3-Year Protection

Every Mercury 300HP Verado outboard is backed by a comprehensive 3-Year Limited Warranty for American owners. This factory-level protection helps support long-term peace of mind and grants access to genuine parts through a vast nationwide marine dealer network.

High-Transom Multi-Engine Match

This 30-inch counter-rotation Verado is a practical port-side power solution for ultra-high transom offshore boats and large walkarounds. It provides the sustained high-end thrust needed for navigating difficult coastal tidal flows while offering digital maneuverability and silent operation.

Maintenance & Longevity

Maintaining clean oil in the 7.0L integrated wet sump system is vital for preserving tight engine tolerances over time. Always flush the cooling system with fresh water after every saltwater outing.Maintenance note: Follow the manufacturer’s service procedures and lubrication specifications for the engine and gearcase.