LY Series 6LY2AM-STP (440HP/370kW)
Producing 440HP (370kW) at 3,300 rpm, this durable, reliable in-line-six is built to outperform. Turbocharged, aftercooled and with direct fuel injection. Supplied without marine gear.

History of the Engine:
The release of the 6LY2-STP increases the horsepower available in Yanmar’s 6LY series, providing a formidable lineup of engines that have already achieved victory in international powerboat races. The high power-to weight ratio, the low slung configuration, the virtually square end profile of 708 x 708mm (28 x 28 in) for maximum compactness, and the intercooler turbo are all here.

Mounting:
The mountability is excellent due to its flat top narrow profile. Repowering a gasoline engine boat is now a pleasure, for this engine has more muscle and endurance to match virtually whatever was previously being used.

Features:
• Race proven performance making a fast boat faster. Powerto-weight ratio is even more startling. Endurance and fuel economy are at a level that only a diesel could achieve.
• It follows current user trends, the demand for more power and more speed. And because it is a diesel, smaller fuel tanks can be used saving hundreds of lbs/kgs of weight. A speed increase becomes immediately possible.

• Direct injection using ultra-high-pressure fine mist
injectors makes for excellent economy together with superb performance, yet there is savings, precious energy savings, and an increase in safety accompany the change to a diesel.

And the 6LY2 clears the strict IMO exhaust regulations.

• All service points are conveniently placed high on the engine. Renowned Yanmar reliability and service support, completes the package.

An engine that will dramatically lift the performance of virtually ANY hull, and likely put you in the winners circle too, if you so desire.

272–324kW (370–440HP)
Race-proven performance with startling power-to-weight capability and low-slung configuration. Extremely popular for repowering petrol-driven engines because of the flat-top, narrow profile of these diesels. The engines benefit further from outstanding fuel economy.