19371-ZW9-000 Honda Marine Water Jacket Packing | Genuine OEM Outboard Part

🔧 Product Description

Genuine Honda BF15D / BF20D Water Jacket Cover Gasket - Part Number: 19371-ZW9-000

A genuine Honda water-jacket cover packing for BF15D and BF20D four-stroke outboards. It seals the removable water-jacket cover to the cylinder-block cooling passage, helping contain cooling water and maintain the designed circulation path around the powerhead.

⚙️ Key Features

• Genuine Honda formed water-jacket cover gasket
• Correct ZW9 passage, fastener and sealing profile
• Heat-, coolant- and corrosion-resistant service material
• Single-use gasket recommended whenever the water-jacket cover is removed

🚤 Compatibility

Commonly used on

• Honda BF15D model families
• Honda BF20D model families
• Includes BF15D3 and BF20D3 applications whose water-jacket diagram specifies 19371-ZW9-000

Typically suits

• HP Range: 15-20 HP
• Engine Type: Inline two-cylinder four-stroke outboard
• Year Range: Approximately 2003 onward, model and market dependent
• Serial / Identification Range: Example BF15D3 coverage includes BALJ-series frames beginning at BALJ-1000001. Confirm the complete model suffix and frame serial because later cylinder-block revisions can use different cover components.

🔌 Function

Seals the water-jacket cover so cooling water remains inside the cylinder-block passages and is directed around the combustion chambers before returning to the discharge circuit.

⚠️ Common Signs of Failure

• Cooling-water seepage around the water-jacket cover
• Salt deposits or corrosion at the cover joint
• Gasket is torn, compressed, hardened or delaminated
• Engine has been dismantled and the original gasket cannot be reused

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 19371-ZW9-000 - current verified Honda service reference
• No later direct Honda supersession confirmed

OEM / Related Numbers

• 19371-ZW9-000
• 19371ZW9000

Aftermarket / Verified Equivalents

• No verified direct aftermarket equivalent

📦 Condition

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