91301-ZY3-003 Honda Marine O-Ring | Genuine OEM Outboard Part

🔧 Product Description

Genuine Honda V6 Exhaust / Water Passage O-Ring 66.4 × 3.1 mm - Part Number: 91301-ZY3-003

A genuine Honda 66.4 × 3.1 mm O-ring used at the exhaust-manifold and adjoining water-passage interfaces on large V6 four-stroke outboards. Two O-rings are included in specified major gasket kits and may be required per engine.

⚙️ Key Features

• Genuine Honda large-section sealing O-ring
• Nominal dimensions: 66.4 × 3.1 mm
• Heat-, coolant- and oil-resistant elastomer
• Used in specified exhaust-manifold/engine sealing joints

🚤 Compatibility

Commonly used on

• Honda BF175A and BF175D
• Honda BF200A and BF200D
• Honda BF225A and BF225D
• Honda BF250A and BF250D
• Only engine/exhaust-manifold revisions whose diagram specifies 91301-ZY3-003

Typically suits

• HP Range: 175-250 HP
• Engine Type: V6 EFI four-stroke outboard
• Year Range: Approximately 2002 onward, model dependent
• Serial / Identification Range: Confirm the complete frame serial and exact exhaust-manifold or gasket-kit diagram. Quantity is installation dependent.

🔌 Function

Seals the specified large circular exhaust/cooling-water interface against fluid and gas leakage.

⚠️ Common Signs of Failure

• Cooling-water seepage at the exhaust-manifold joint
• Exhaust staining or gas leakage
• O-ring is flattened, hardened, swollen or cut
• Joint has been dismantled and the compressed O-ring cannot be reused

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 91301-ZY3-003 - current verified Honda service reference
• No later direct Honda supersession confirmed

OEM / Related Numbers

• 91301-ZY3-003
• 91301ZY3003
• 06115-ZVL-010 - gasket kit containing two of these O-rings

Aftermarket / Verified Equivalents

• No verified direct aftermarket equivalent with confirmed Honda material specification

📦 Condition

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