Yamaha - Water Seal - Cooling System Sealing Component - 6E5-44365-01-00

When you work around Yamaha outboards long enough, you learn pretty quickly that cooling system seals are not the kind of parts you skip over. The Yamaha 6E5-44365-01-00 Water Seal helps keep cooling water moving where it is supposed to without leaking past critical areas. It is a small part, but on everything from older two strokes to later high horsepower models, a worn seal can cause bigger cooling issues in a hurry. Replacing it during water pump or lower unit service is one of those jobs that helps keep the motor dependable when it matters.

This updated part supersedes Yamaha 6E5-44365-00-00, so it is the correct replacement when servicing applicable engines. It is the kind of part experienced Yamaha techs replace while the assembly is already apart, because that is the right time to do it once and do it right. For motors that live in saltwater or see heavy use, staying ahead of seal wear goes a long way toward protecting the cooling system.

Key Features

• Genuine Yamaha OEM Construction – Built to Yamaha factory specifications for dependable fit and sealing performance.
• Cooling System Water Control – Helps keep cooling water contained in the proper passages during engine operation.
• Updated Replacement Part – Supersedes Yamaha part number 6E5-44365-00-00 for continued service compatibility.
• Smart During Service Work – Commonly replaced during water pump repairs, cooling system maintenance, or lower unit service.

Engine & Boat Compatibility

• 115 - 1984-2005
• 130 - 1988-2004
• 150 - 1984-Current
• 175 - 1984-Current
• 200 - 1984-Current
• 225 - 1990-Current
• 250 - 1990-Current
• B115 - 1998-1999
• C115 - 1991-2000
• C150 - 1996-1999
• D150 - 1997-1999
• DX150 - 1999-2005
• F115 - 2000-Current
• F150 - 2004-Current
• F175 - 2014-Current
• F200 - 2002-Current
• F225 - 2002-Current
• F250 - 2005-Current
• L130 - 1993-2001
• L150 - 1992-1999
• L200 - 1992-1999
• L225 - 1994-1999
• L250 - 1990-1999
• LF115 - 2000-Current
• LF150 - 2004-Current
• LF200 - 2002-Current
• LF225 - 2002-2010
• LF250 - 2005-Current
• LX150 - 1999-2001
• LX200 - 1999-2001
• LX225 - 2000-2003
• LX250 - 2000-2003
• LZ150 - 2000-2005
• LZ200 - 2000-2012
• LZ250 - 2003-2005
• LZ300 - 2004-2006
• P115 - 1993-1996
• P150 - 1991-1999
• P175 - 1994-1999
• P200 - 1991-1999
• PROV150 - 1986-1990
• PX150 - 1999
• S115 - 1996-1999
• S130 - 1996-1999
• S150 - 1996-1999
• S175 - 1996-1999
• S200 - 1996-1999
• S225 - 1996-1999
• S250 - 1996-1999
• SX150 - 1999-2004
• SX200 - 1999-2005
• SX225 - 2000-2003
• SX250 - 2000-2003
• V150 - 2000-2008
• V175 - 2000
• V200 - 1998-1999
• V225 - 1998-1999
• V6EXCEL - 1987-1989
• V6SPECIAL - 1984-1986
• VF115 - 2015
• VF150 - 2013-Current
• VF175 - 2015-Current
• VF200 - 2009-Current
• VF225 - 2009-Current
• VF250 - 2009-Current
• VX150 - 2000-2004
• VX200 - 2000-2005
• VX225 - 2000-2004
• VX250 - 2002-2004
• VZ150 - 2000-2014
• VZ175 - 2001-2012
• VZ200 - 2001-2009
• VZ225 - 2003-2009
• VZ250 - 2003-2009
• VZ300 - 2004-2009
• Z150 - 2000-2005
• Z175 - 2001-2005
• Z200 - 2000-2012
• Z250 - 2003-2005
• Z300 - 2004-2006

Frequently Asked Questions

Q: What does this water seal do on a Yamaha outboard?
A: It helps keep cooling water contained in the proper passages so the cooling system can maintain correct flow and pressure.

Q: When should this water seal be replaced?
A: It is usually replaced during water pump service, lower unit work, or anytime the existing seal shows wear or damage.

Q: How can I tell if a water seal is worn out?
A: Common signs include visible wear during inspection, water leakage in the serviced area, or cooling system issues after disassembly.

Q: Does saltwater use make seal replacement more important?
A: Yes. Salt, heat, and regular use can shorten seal life, so saltwater motors benefit from closer inspection during service.

Q: Does this part replace an older Yamaha part number?
A: Yes. Yamaha 6E5-44365-01-00 supersedes part number 6E5-44365-00-00.

• Engine Application
  • 115 - 1984-2005
  • 130 - 1988-2004
  • 150 - 1984-Current
  • 175 - 1984-Current
  • 200 - 1984-Current
  • 225 - 1990-Current
  • 250 - 1990-Current
  • B115 - 1998-1999
  • C115 - 1991-2000
  • C150 - 1996-1999
  • D150 - 1997-1999
  • DX150 - 1999-2005
  • F115 - 2000-Current
  • F150 - 2004-Current
  • F175 - 2014-Current
  • F200 - 2002-Current
  • F225 - 2002-Current
  • F250 - 2005-Current
  • L130 - 1993-2001
  • L150 - 1992-1999
  • L200 - 1992-1999
  • L225 - 1994-1999
  • L250 - 1990-1999
  • LF115 - 2000-Current
  • LF150 - 2004-Current
  • LF200 - 2002-Current
  • LF225 - 2002-2010
  • LF250 - 2005-Current
  • LX150 - 1999-2001
  • LX200 - 1999-2001
  • LX225 - 2000-2003
  • LX250 - 2000-2003
  • LZ150 - 2000-2005
  • LZ200 - 2000-2012
  • LZ250 - 2003-2005
  • LZ300 - 2004-2006
  • P115 - 1993-1996
  • P150 - 1991-1999
  • P175 - 1994-1999
  • P200 - 1991-1999
  • PROV150 - 1986-1990
  • PX150 - 1999
  • S115 - 1996-1999
  • S130 - 1996-1999
  • S150 - 1996-1999
  • S175 - 1996-1999
  • S200 - 1996-1999
  • S225 - 1996-1999
  • S250 - 1996-1999
  • SX150 - 1999-2004
  • SX200 - 1999-2005
  • SX225 - 2000-2003
  • SX250 - 2000-2003
  • V150 - 2000-2008
  • V175 - 2000
  • V200 - 1998-1999
  • V225 - 1998-1999
  • V6EXCEL - 1987-1989
  • V6SPECIAL - 1984-1986
  • VF115 - 2015
  • VF150 - 2013-Current
  • VF175 - 2015-Current
  • VF200 - 2009-Current
  • VF225 - 2009-Current
  • VF250 - 2009-Current
  • VX150 - 2000-2004
  • VX200 - 2000-2005
  • VX225 - 2000-2004
  • VX250 - 2002-2004
  • VZ150 - 2000-2014
  • VZ175 - 2001-2012
  • VZ200 - 2001-2009
  • VZ225 - 2003-2009
  • VZ250 - 2003-2009
  • VZ300 - 2004-2009
  • Z150 - 2000-2005
  • Z175 - 2001-2005
  • Z200 - 2000-2012
  • Z250 - 2003-2005
  • Z300 - 2004-2006