Mercury Marine Outboard Motors Mercruiser Inboard Engine Mercruiser Diesel Engine Propellers Precision Parts Gauges & Controls Outboard Motors Built tough for reliable, long-lasting performance. From 2.5 to 350 horsepower. MerCruiser Inboard Engine Power-honed engines that drive boating excursions. From 135 to 430 horsepower. MerCruiser Diesel Engine Handles the hardest days with strength, durability, and speed. From 115 to 550 horsepower. Propellers Maximize your engine's performance. Put a Mercury propeller behind it. Precision Parts Precision Parts and Lubricants keep your engine running at peek performance. Gauges & Controls More information and data on more board and engine functions than any other system in the boating industry.