Recreational Marine Engines

Yanmar is the first name in 14-440 HP Recreational Marine diesel power. Longitude Marine is a leading Mid-West supplier of Yanmar marine diesel engines, parts and service. Find out what it means to experience the power of the market’s preferred diesel, supported by one of the most established and reliable diesel supply partners around.

Longitude Marine only uses Genuine Yanmar OEM Parts!

Only suppies Yanmar Genuine Parts are the only parts manufactured to YANMAR’s strict, industry-leading standards in quality and durability. Each Genuine part is manufactured under the ISO9001 standard, a process that ensures that every Yanmar Genuine Part is the best part for the job. 

Yanmar Engine Model Series

Engine Model HP Notes Engine Year
6LY2A-UTP 365 HP @ 3300 RPM 6 Cyl, Turbocharged with seawater-to fresh water cooling 2001 to present
6LY3-ETP 436 HP @ 3198 RPM Turbocharged 2001 to present
6LY3-STC 430 Electronic Gov. & Timer Summer 2008 - Present
6LY3-STP 369 -400 HP @ 3198 rpm 6 Cylinder, vertical, 4 cycle water-cooled turbocharged diesel engine. 2001 to present
6LY3-UTC 370 Electronic Gov. & Timer Summer 2008 - Present
6LY3-UTP 340 ~ 342 HP @ 3150 RPM 6 Cyl, Turbocharged with seawater-to fresh water cooling 2001 to present
6LY3A-ETP 480 Electronic Gov. & Timer Fall 2005 - Present
6LY3A-STP 440 Electronic Gov. & Timer Winter 2005 - Present
6LY3A-UTP 380 Electronic Gov. & Timer January 2006 - Present
6LYA-STE 350 US Built January 1997 - May 2001
6LYA-STP 370 Higher HP June 2001 - December 2006
6LYA-UTE 315 US Built January 1997 - December 2001
6SY-655 655 Electronic Unit Injector 2006 - Present
6SY-STP 720 Electronic Unit Injector 2005 - Present
8SY-STP 900 Electronic Unit Injector 2005 - Present

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