682-12414-A1 Yamaha Gasket | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Thermostat Cover Gasket - Part Number: 682-12414-A1

A genuine Yamaha thermostat cover gasket for selected 9.9HP and 15HP two-stroke outboards.

The gasket seals the thermostat cover to the cylinder or crankcase cooling passage, preventing cooling-water leakage and maintaining the correct flow through the thermostat housing.

⚙️ Key Features

• Genuine Yamaha OEM thermostat gasket

• Correct Yamaha part number 682-12414-A1

• Used on Yamaha 9.9HP and 15HP two-stroke cooling systems

• Suitable for thermostat inspection and replacement service

• Cross-references with Sierra and aftermarket gasket numbers

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 682-12414-A1 → Supersedes 682-12414-A0

• 682-12414-A0 → Supersedes 682-12414-00

• 682-12414-00 earlier Yamaha thermostat gasket reference

OEM / Related Numbers:

• 682-12414-A1

• 682-12414-A1-00

• 68212414A100

• 682-12414-A0

• 682-12414-00

• 6E5-12411-series related thermostat

Aftermarket / Verified Equivalents:

• Sierra: 18-0836

• Recmar: REC682-12414-A1

• Direct-replacement thermostat cover gasket: 682-12414-A1

🚤 Compatibility

Commonly used on:

• Yamaha 9.9HP and 15HP two-stroke thermostat covers

Typically suits:

• Engine models:

• Yamaha 9.9A

• Yamaha 9.9B

• Yamaha 9.9C

• Yamaha 9.9D

• Yamaha 15A

• Yamaha 15C

• Yamaha 15D

• Yamaha 15LH 1987

• Yamaha 9.9LD 1990

• HP Range: 9.9HP - 15HP

• Engine Type: Yamaha carburetted two-stroke outboard

• Year Range: Approximately 1987 - 2000s, dependent on cylinder design

🔌 Function

The gasket seals the thermostat cover so cooling water remains contained within the cylinder cooling passages.

Common signs of failure:

• Water leaking around the thermostat cover

• Salt deposits or staining around the gasket joint

• Engine overheats because the cover will not seal correctly

• Gasket tears during thermostat removal

• Cover remains wet after cooling-system servicing

📦 Condition

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging