19317-ZW9-000 Honda Marine Thermostat Seal | Genuine OEM Outboard Part

🔧 Product Description

Genuine Honda Thermostat Cover Seal - Part Number: 19317-ZW9-000

A genuine Honda thermostat-cover sealing ring used on several portable and mid-range Honda outboard cooling systems. It seals the thermostat housing/cover so regulated cooling water remains contained.

⚙️ Key Features

• Genuine Honda moulded thermostat seal

• Heat- and coolant-resistant material

• Correct profile for the ZW9 thermostat cover family

• Recommended replacement during thermostat inspection or replacement

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 19317-ZW9-000 - current verified service reference; no later direct supersession confirmed

OEM / Related Numbers:

• 19317-ZW9-000

• 19317ZW9000

Aftermarket / Verified Equivalents:

• No verified direct aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Honda BF8D/BFP8D

• Honda BF9.9D/BFP9.9D

• Honda BF15D/BFP15D and BF20D/BFP20D

• Honda BF60A/BFP60A

• Honda BF75D/BF90D/BF100A where the thermostat diagram lists 19317-ZW9-000

Typically suits:

• HP Range: 8-100 HP across verified applications

• Engine Type: Portable or mid-range four-stroke outboard

• Year Range: Approximately 2001 onward, model dependent

• Serial / Identification Range: Confirm the thermostat-cover diagram; nearby thermostat and water-jacket seals can have similar dimensions.

🔌 Function

Seals the thermostat cover to prevent coolant loss and air entry while the thermostat controls engine temperature.

Common signs replacement or service is required:

• Cooling-water seepage at the thermostat cover

• Salt deposits or corrosion around the housing

• Seal is flattened, brittle, swollen or cut

• Leak begins after thermostat servicing

📦 Condition

• Genuine Honda Marine OEM part

• Brand new

• Supplied in genuine Honda or equivalent protective packaging