Yamaha - Cylinder Crankcase Cover Gasket - Engine Sealing Component - 688-12414-A1-00

Overview

When you're working on Yamaha two-stroke V-6 motors, you learn pretty quick that the small sealing pieces matter just as much as the big parts. This cylinder crankcase cover gasket is one of those pieces that keeps the engine sealed tight and running the way it should. It sits between the crankcase and cover, preventing leaks that can cause serious performance issues over time. When you're refreshing an older Yamaha or resealing the powerhead, this is one of those parts you never skip.

Key Features

• Precise Engine Seal – Creates a tight barrier between the crankcase and cover to prevent air or oil leaks.
• Exact Yamaha Fitment – Designed to match factory tolerances for proper alignment and reliable sealing.
• Durable Gasket Material – Built to withstand engine heat, vibration, and long hours on the water.
• Essential During Engine Service – Commonly replaced during crankcase work, resealing, or powerhead rebuilds.

Engine & Boat Compatibility

75 - 1994-2000
80 - 1997
85 - 1989-1996
90 - 1984-2005
115 - 1984-2009
130 - 1988-2004
150 - 1984-2009
175 - 1984-2012
200 - 1984-2012
225 - 1990-1997
B90 - 1997-1999
B115 - 1998-1999
C75 - 1994-1999
C80 - 1997
C85 - 1991-1996
C90 - 1997-2001
C115 - 1991-2000
C150 - 1996-1999
CV85 - 1989-1990
DX150 - 1999-2005
E75 - 1995-2000
L130 - 1989-2001
L150 - 1986-1999
L200 - 1986-1999
LX150 - 1999-2001
LX200 - 1999-2001
LZ150 - 2000-2005
LZ200 - 2000-2012
P75 - 1996-1999
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
SX150 - 1999-2004
SX200 - 1999-2005
V150 - 2000-2008
V175 - 2000
V6EXCEL - 1987-1989
V6SPECIAL - 1984-1986
VX150 - 2000-2004
VZ150 - 2000-2014
VZ175 - 2001-2012
VZ200 - 2001-2004
Z150 - 2000-2005
Z175 - 2001-2005
Z200 - 2000-2012

Frequently Asked Questions

Q: What are the signs that this gasket needs to be replaced?
A: Oil residue around the crankcase seam, loss of compression, or visible gasket deterioration during engine service are common signs it's time for replacement.

Q: Should this gasket be replaced during a crankcase service?
A: Yes. Anytime the crankcase cover is removed, it is best practice to install a new gasket to ensure a proper seal when reassembling the engine.

Q: Can an old gasket be reused if it looks good?
A: It is not recommended. Even if it looks intact, once compressed it may not reseal properly and could cause leaks after reassembly.

Q: Is sealant required with this gasket?
A: Follow Yamaha service manual guidance. In many cases the gasket is designed to seal on its own, though some technicians apply light sealant depending on the repair.

Q: Is this gasket suitable for saltwater engines?
A: Yes. It is designed for Yamaha outboards used in both freshwater and saltwater environments when installed correctly.

• Supersessions
  688-12414-00-00
• Engine Application
  • 75 - 1994-2000
  • 80 - 1997
  • 85 - 1989-1996
  • 90 - 1984-2005
  • 115 - 1984-2009
  • 130 - 1988-2004
  • 150 - 1984-2009
  • 175 - 1984-2012
  • 200 - 1984-2012
  • 225 - 1990-1997
  • B90 - 1997-1999
  • B115 - 1998-1999
  • C75 - 1994-1999
  • C80 - 1997
  • C85 - 1991-1996
  • C90 - 1997-2001
  • C115 - 1991-2000
  • C150 - 1996-1999
  • CV85 - 1989-1990
  • DX150 - 1999-2005
  • E75 - 1995-2000
  • L130 - 1989-2001
  • L150 - 1986-1999
  • L200 - 1986-1999
  • LX150 - 1999-2001
  • LX200 - 1999-2001
  • LZ150 - 2000-2005
  • LZ200 - 2000-2012
  • P75 - 1996-1999
  • 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
  • SX150 - 1999-2004
  • SX200 - 1999-2005
  • V150 - 2000-2008
  • V175 - 2000
  • V6EXCEL - 1987-1989
  • V6SPECIAL - 1984-1986
  • VX150 - 2000-2004
  • VZ150 - 2000-2014
  • VZ175 - 2001-2012
  • VZ200 - 2001-2004
  • Z150 - 2000-2005
  • Z175 - 2001-2005
  • Z200 - 2000-2012