19291-ZW9-000 Honda Flash Valve & Spring | Genuine Used Part

🔧 Product Description

Genuine Honda Cooling-System Flush Valve - Part Number: 19291-ZW9-000

A genuine Honda flush valve supplied with the associated spring where fitted.

The OEM component is a flush valve, although some catalogue listings incorrectly display the description as "flash valve." The separate matching spring is part number 19279-ZW9-010.

⚙️ Key Features

• Genuine Honda cooling-system valve
• Correct valve part number 19291-ZW9-000
• Matching spring part number 19279-ZW9-010
• One-way flushing and cooling-water control
• Used across selected Honda outboard cooling systems

🚤 Compatibility

Commonly used on

• Honda thermostat and freshwater-flushing assemblies
• Selected mount-case cooling-water systems

Typically suits

• Engine models:
• Honda BF8D
• Honda BF9.9D / BFP9.9D
• Honda BF15D
• Honda BF20D
• Honda BF200A
• Honda BF225A
• Additional Honda engines where 19291-ZW9-000 is shown in the cooling diagram
• HP Range: Approximately 8HP - 225HP, dependent on cooling-system configuration
• Engine Type: Honda carburetted or EFI four-stroke outboard
• Year Range: Approximately 2001 onward

🔌 Function

The valve seals the flushing passage during normal operation and opens under the required pressure during freshwater flushing. The spring returns the valve to its seated position.

⚠️ Common Signs of Failure

• Cooling water leaks from the flush-port area
• Flush water does not enter the cooling system correctly
• Valve remains stuck open or closed
• Spring is corroded, weak or missing
• Damaged gasket causes reduced cooling-system pressure

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 19291-ZW9-000 current flush-valve reference

OEM / Related Numbers

• 19291-ZW9-000 flush valve
• 19279-ZW9-010 flush-valve spring
• 19297-ZW9-000 flush-valve gasket
• 19317-ZW9-000 related O-ring
• 19371-ZW9-000 related thermostat gasket

Aftermarket / Verified Equivalents

• Aftermarket flush-port O-ring and gasket kits
• Complete cooling-system service kits containing compatible seals
• No direct complete aftermarket valve equivalent

📦 Condition

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