19319-ZY6-010 Honda Marine Seal | Genuine OEM Outboard Part

🔧 Product Description

Genuine Honda Marine Thermostat Spacer Gasket - Part Number: 19319-ZY6-010

A genuine Honda gasket fitted between the thermostat spacer and chain-case/thermostat housing on selected BF115D, BF135 and BF150 engines.

⚙️ Key Features

• Factory Honda spacer-gasket profile
• Correct coolant-port alignment
• Single-use marine gasket
• Used in dual-thermostat inline-four systems
• Direct OEM replacement

🚤 Compatibility

Commonly used on

• Honda Marine four-stroke outboard cooling-system applications

Typically suits

• Engine models:
• BF115D and BF115DK1 where the ZY6 thermostat spacer is fitted
• BF135A/D
• BF150A/D
• HP Range: 115HP-150HP
• Engine Type: Inline four-cylinder EFI four-stroke outboard
• Year Range: Approximately 2004 onward

🔌 Function

Seals the thermostat spacer so coolant is directed through the intended thermostat and bypass passages.

⚠️ Common Signs of Failure

• Cooling-water leakage or salt staining at the joint
• Reduced pump efficiency or unstable cooling-water flow
• Overheating after the assembly has been disturbed
• Visible tearing, compression damage or corrosion around the sealing face
• Persistent leakage after reusing the old gasket

🔄 Supersession & Cross Reference

OEM Supersession Chain

• No supersession; current Honda OEM reference

OEM / Related Numbers

• Honda: 19319-ZY6-010

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

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