18125-ZY3-003 Honda Marine Gasket | Genuine OEM Outboard Part

🔧 Product Description

Genuine Honda Left Exhaust Manifold Gasket - Part Number: 18125-ZY3-003

New genuine Honda left-bank exhaust-manifold gasket for V6 BF175, BF200, BF225 and BF250 outboards. It is not interchangeable with the right-side 18115-ZY3-003 gasket.

⚙️ Key Features

• Genuine Honda left-bank exhaust-manifold gasket
• Position-specific left-side port layout
• Heat- and cooling-water-resistant material
• Seals exhaust and water-jacket passages
• Renew whenever the left manifold is removed

🚤 Compatibility

Commonly used on

• Honda Marine four-stroke outboard engines

Typically suits

• Engine models:
• BF175A/BF175D
• BF200A/BF200D
• BF225A/BF225D
• BF250A/BF250D where the ZY3 left-side gasket is specified
• HP Range: 175HP - 250HP
• Engine Type: Honda V6 four-stroke outboard
• Year Range: Engine-family and manifold revision dependent

🔌 Function

This precision-formed gasket seals the mating surfaces identified in the compatibility section. It prevents combustion gas, intake air, exhaust gas, cooling water, engine oil or fuel vapour from escaping or crossing between adjoining passages.

⚠️ Common Signs of Failure

• Exhaust soot, salt or cooling-water staining at the left manifold joint
• Exhaust noise or fumes increase inside the cowling
• Cooling water leaks around the manifold
• Left manifold is removed for corrosion inspection
• Gasket is burnt, eroded or delaminated

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 18125-ZY3-003 (Honda OEM left-side reference)

OEM / Related Numbers

• 18125-ZY3-003
• 18115-ZY3-003 right-side companion gasket

Aftermarket / Verified Equivalents

• Recmar: REC18125-ZY3-003
• Aftermarket left-side Honda V6 exhaust-manifold gasket equivalents

📦 Condition

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