6H3-45113-A0 Yamaha Gasket Upper Casing | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Upper Casing to Powerhead Gasket - Part Number: 6H3-45113-A0

A genuine Yamaha upper-casing gasket for selected 50HP, 60HP and 70HP two-stroke outboards.

The gasket seals the powerhead or exhaust-guide assembly to the upper casing, containing exhaust gases and cooling water at the mounting joint.

⚙️ Key Features

• Genuine Yamaha OEM upper-casing gasket
• Correct Yamaha part number 6H3-45113-A0
• Used between the powerhead or exhaust guide and upper casing
• Important replacement whenever the powerhead is removed
• Asaki and direct aftermarket replacements available

🚤 Compatibility

Commonly used on

• Yamaha three-cylinder two-stroke upper-casing and powerhead joints

Typically suits

• Engine models:
• Yamaha 50G
• Yamaha C60
• Yamaha E60
• Yamaha P60
• Yamaha 60F and 60FETO
• Yamaha 60TLR
• Yamaha 70B
• Yamaha C70
• Yamaha 70TLR and 70TRP
• Yamaha P60TLHP 1991
• Yamaha 60TLRNC 2004
• HP Range: 50HP - 70HP
• Engine Type: Yamaha three-cylinder carburetted two-stroke outboard
• Year Range: Approximately 1990s - 2000s, dependent on upper-casing design

🔌 Function

The gasket seals exhaust and cooling-water passages between the powerhead or exhaust guide and the upper casing.

⚠️ Common Signs of Failure

• Exhaust staining around the powerhead base
• Water leakage into the upper casing
• Salt deposits around the mounting joint
• Exhaust noise from the midsection
• Replacement required after powerhead removal

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 6H3-45113-A1 later related service reference
• 6H3-45113-A0 → Supersedes 6H3-45113-00
• 6H3-45113-00 earlier Yamaha upper-casing gasket reference

OEM / Related Numbers

• 6H3-45113-A0
• 6H3-45113-A0-00
• 6H345113A000
• 6H3-45113-A1
• 6H3-45113-00
• 6H3-W0001-series related powerhead gasket kit
• Related exhaust-guide and upper-casing gasket references

Aftermarket / Verified Equivalents

• Asaki: 6H3-45113-A0
• Yamarine: 6H3-45113-A0
• Copkingo Marine: 6H3-45113-A0 replacement gasket
• Direct aftermarket two-piece gasket set: 6H3-45113-A0

📦 Condition

• Genuine Yamaha part
• Brand new
• Supplied in original or equivalent packaging