688-12413-00-1S Yamaha Z200 Thermostat Cover | Genuine Used Part

🔧 Product Description

Genuine Yamaha Z200 HPDI Thermostat Cover - Part Number: 688-12413-00-1S

A genuine Yamaha thermostat cover for selected Z150, Z175 and Z200 HPDI outboards and compatible Yamaha two-stroke cooling systems.

Two thermostat covers are fitted to many applicable V6 engines, with one controlling the cooling passage for each cylinder bank.

⚙️ Key Features

• Genuine Yamaha thermostat cover
• Correct part number 688-12413-00-1S
• Used on selected HPDI V6 engines
• Corrosion-resistant factory alloy construction
• Secures the thermostat and gasket to the cylinder block

🚤 Compatibility

Commonly used on

• Yamaha V6 HPDI thermostat assemblies
• Yamaha carburetted V6 cylinder-block cooling systems

Typically suits

• Engine models:
• Yamaha Z150 / VZ150 HPDI
• Yamaha LZ150 HPDI
• Yamaha Z175 / VZ175 HPDI
• Yamaha Z200 / VZ200 HPDI
• Yamaha LZ200 HPDI
• Yamaha 150HP, 175HP and 200HP carburetted V6 applications where 688-12413-00-1S is specified
• Yamaha Z200PETO and Z200NETO engine families
• HP Range: 150HP - 200HP
• Engine Type: Yamaha V6 carburetted or HPDI direct-injection two-stroke outboard
• Year Range: Approximately 1998-2012, dependent on model code

🔌 Function

The thermostat cover retains and seals the thermostat within the cylinder block. The thermostat regulates cooling-water circulation so the engine reaches and maintains its designed operating temperature.

⚠️ Common Signs of Failure

• Water leaks from the thermostat housing
• White corrosion deposits appear around the cover
• Cover is warped and will not seal
• Mounting holes or threads are damaged
• Thermostat is loose or incorrectly retained

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 688-12413-00-1S current OEM service reference

OEM / Related Numbers

• 688-12413-00-1S
• 68812413001S
• 688-12414-A1 thermostat-cover gasket
• 6E5-12411-01 thermostat
• Related thermostat seal and mounting bolts

Aftermarket / Verified Equivalents

• Recmar: REC688-12413-00-1S
• No aftermarket equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated