All new MerCruiser sterndrive

Engineered with innovative new features and state-of-the-art technology, the new Mercury MerCruiser 4.5L 250hp sterndrive was designed and is manufactured at Mercury Marine’s world headquarters in Fond du Lac, Wisconsin.

"We are proud to introduce the next generation of sterndrive technology with this ground-breaking new engine," said Mercury Marine President John Pfeifer. "This is a great power source that provides features, benefits and technology that make boating more enjoyable and worry-free. This engine was purpose-built for marine use and it delivers Mercury’s proven performance, durability and ease of service."

Mercury says the MerCruiser 4.5L establishes new standards for acceleration and overall performance, thanks to design innovations such as a long runner scrolled intake manifold and high displacement, which produces an outstanding power-to-weight ratio. This V-6 engine weighs nearly 60kg less than a 5.0L V-8 small block, yet provides similar performance.

The MerCruiser 4.5L is the first V-6 sterndrive that’s compatible with SmartCraft Digital Throttle & Shift (DTS) for immediate throttle response and smooth shifting throughout the rev range. An option for the 4.5L V-6 with DTS is Joystick Piloting, providing the ultimate in docking experience and manoeuvrability.

The 4.5L V-6 also offers Adaptive Speed Control (ASC), which automatically maintains the set rpm point regardless of load or condition changes, such as tight turns, tow sports and lower speeds on plane. The result is increased throttle response and a 'sportier' feel for the driver, who no longer has to make continual throttle-control adjustments.

Mercury Marine built the ultimate anti-corrosion protection system into the 4.5L V-6, using durable cast-iron componentry wherever the engine encounters seawater, and corrosion-resistant aluminum and composites everywhere else. Digital rather than analog sensors are used throughout. As with all MerCruiser engines, the 4.5L sterndrive comes with a standard three-year corrosion warranty, plus Mercury’s limited manufacturer’s warranty of up to two years.

Mercury paid particular attention to ease of maintenance when designing the MerCruiser 4.5L V-6, eliminating the need for the traditional 20-hour service. This unit features a maintenance center near the top-front section of the engine, ensuring that consumer touch-points – including oil filter and fill – are easily identifiable and accessible. Additionally, the valve train is maintenance-free for the life of the engine, and a QR code on the engine’s service label allows smartphone users to access 'how-to' videos online. The 4.5L V-6 also boasts a “season-extending” drain system that can keep you boating during the transition times between seasons.

The 4.5L is available in single or twin installations and is compatible with Mercury’s full series of Alpha and Bravo Drives.

(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src="//connect.facebook.net/en_GB/all.js#xfbml=1"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk'));