Mercury went out on their own in 2004 to become the only company with a range of production model supercharged outboards. They have been reliable and efficient engines with the 350 and 400hp versions at the head of the pack.

The main engineering differences of the Mercury 400 over the Verado 350 are the Sportmaster gearcase with forward-angled leading edge and cooling water intakes under the torpedo nose in addition to the normal intakes above the torpedo, plus an engine oil cooler inside the sump.

That's got the mounts that reduce vibration. And sound you're gonna get the digital throttle. You're gonna get the digital. Steering.

Brunswick Corporation Mercury Marine is a marine engine division of Brunswick Corporation headquartered in Fond du Lac, Wisconsin. The main product line is outboard engines. It also produces the MerCruiser line of sterndrives and inboard engines.

Supercharged power from the 350 and 400hp L6 Verado outboards delivers instant throttle response. Superior Fuel Economy: Advanced Range Optimization on V8 Verado outboards improves cruise-speed fuel efficiency by automatically adjusting fuel delivery so seamlessly the operator won't feel or hear it.

Refined Power: Supercharged power from the 350HP L6 Verado outboards delivers instant throttle response.

And the 350. And 400 inline. Six now some of you may asking well if the 350.

Furthering the legacy of the Verado® engine family, Mercury reimagined outboard performance to deliver the ultimate luxury boating experience. With the unwavering strength of a V12 powerhead, the 600hp Verado outboard delivers extraordinary range and performance to take your boating adventures to new destinations.

There are many other differences, as well. For example, the 350 Verado has a 70-amp alternator and the new 300 V8 has a 115-amp unit, the 350 needs 89 octane fuel, and the new 300 runs on 87 octane gas, the old 350 is 2-Star CARB rated for emissions, and the new 300 is 3-Star. Interestingly, the new V8 weighs 600 lbs.

six-cylinder The inherently balanced in-line six-cylinder Mercury Verado engine and Advanced Mid Section (AMS) design with perimeter mounts virtually eliminate vibration in the boat. The result is industry leading calm and smooth confident power.

350