Cylinder Head Gasket - Yamaha

Y-Pipe E Cover Plate

This cover plate is used when you remove the Y-pipe assembly and need to cover the exhaust port that has been left exposed. These are stainless steel cover plates, not aluminum units. Designed to last a lifetime.

Interchanges/Replaces

Mallory

• 9-63955

Yamaha Outboard

• 63V-11181-A0-00
• 63V-11181-A1-00
• 63V-11181-A2-00

Interchanges/Replaces

Mallory

• 9-63963

Yamaha Outboard

• 68F-11181-00

Interchanges/Replaces

GLM

• 34920

Mallory

• 9-63965

Yamaha Outboard

• 6J8-11181-00-00
• 6J8-11181-A0-00
• 6J8-11181-A1-00
• 6J8-11181-A2-00

Interchanges/Replaces

Mallory

• 9-63956

Yamaha Outboard

• 676-11181-03-00
• 676-11181-A0-00
• 676-11181-A1-00
• 676-11181-A2-00

Interchanges/Replaces

GLM

• 34950

Mallory

• 9-63958

Yamaha Outboard

• 688-11181-01-00
• 688-11181-02-00
• 688-11181-A0-00
• 688-11181-A1-00
• 688-11181-A2-00

Interchanges/Replaces

GLM

• 34960

Mallory

• 9-63959

Yamaha Outboard

• 6E5-11181-01-00
• 6E5-11181-02-00
• 6E5-11181-A0-00
• 6E5-11181-A1-00
• 6E5-11181-A2-00

Interchanges/Replaces

Mallory

• 9-63961

Yamaha Outboard

• 697-11181-00-00
• 697-11181-01-00
• 697-11181-A0-00
• 697-11181-A1-00
• 697-11181-A2-00

Interchanges/Replaces

Mallory

• 9-63950

Yamaha Outboard

• 61A-11181-00-00
• 61A-11181-A0-00
• 61A-11181-A1-00
• 61A-11181-A2-00
• 69L-11181-00-00
• 69L-11181-01-00

Interchanges/Replaces

Mallory

• 9-63951

Yamaha Outboard

• 6G5-11181-00-00
• 6G5-11181-01-00
• 6G5-11181-A0-00
• 6G5-11181-A1-00
• 6G5-11181-A2-00
• 6G5-11181-A3-00

Interchanges/Replaces

GLM

• 34940

Mallory

• 9-63952

Yamaha Outboard

• 6H3-11181-00-00
• 6H3-11181-01-00
• 6H3-11181-A0-00
• 6H3-11181-A1-00
• 6H3-11181-A2-00

Interchanges/Replaces

GLM

• 34930

Mallory

• 9-63953

Yamaha Outboard

• 6H3-11181-00-00
• 6H3-11181-A0-00
• 6H3-11181-A1-00
• 6H3-11181-A2-00

Mercruiser Y-Pipe Insert Caps

These caps are commonly used when switching to a thru-hull exhaust system when the y-pipe is no longer needed to route the exhaust. Instead of pulling the engine to remove the y-pipe you can now easily slip these in and clamp them down, easy as that. Oval Shaped for Mercruiser applications. Made of stainless steel these caps will be good for years to come. Sold in pairs.