19291-ZW1-000 Honda Marine Relief Valve | Genuine OEM Outboard Part

🔧 Product Description

Genuine Honda Marine Cooling-System Relief Valve - Part Number: 19291-ZW1-000

A genuine Honda valve element used in the ZW1 flush/relief-valve chamber. It seats against the associated gasket and responds to spring and water pressure within the cooling circuit.

⚙️ Key Features

• Factory moulded valve profile
• Correct sealing diameter for ZW1 chambers
• Works with spring 19279-ZW1-000
• Used with gaskets 19296-ZW1-000 and 19297-ZW1-000
• Direct OEM replacement

🚤 Compatibility

Commonly used on

• Honda Marine four-stroke outboard cooling-system applications

Typically suits

• Engine models:
• BF75A
• BF90A
• BF115A
• BF130A
• HP Range: 75HP-130HP
• Engine Type: Inline four-cylinder four-stroke outboard
• Year Range: Approximately 1999-2007

🔌 Function

Controls pressure-relief and flushing-water movement through the external cooling-system chamber.

⚠️ Common Signs of Failure

• Valve sticks from salt or scale
• Cooling-water leak continues after shutdown
• Overheating from restricted bypass flow
• Valve face becomes grooved or hardened
• Spring cannot seat the valve correctly

🔄 Supersession & Cross Reference

OEM Supersession Chain

• No supersession; current Honda OEM reference

OEM / Related Numbers

• Honda: 19291-ZW1-000

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine Honda Marine OEM part
• Brand new
• Supplied in original or equivalent packaging