91356-ZV5-000 Honda Marine Water Pump O-Ring | Genuine OEM Outboard Part

🔧 Product Description

Genuine Honda Marine Water-Pump O-Ring - Part Number: 91356-ZV5-000

Genuine Honda water-pump housing O-ring for selected BF20 through BF50 four-stroke outboards. It seals the pump cover and lower-unit cooling-water passage to maintain reliable water flow through the engine.

⚙️ Key Features

• Genuine Honda water-pump seal
• Direct-fit moulded O-ring
• Used between water-pump housing components
• Suitable for fresh-water and saltwater service
• Recommended replacement during every complete pump overhaul

🚤 Compatibility

Commonly used on

• Honda mid-range four-stroke water-pump assemblies

Typically suits

• Engine models:
• BF20A
• BF25, BF25A, BF25D and BF25DK
• BF30, BF30A, BF30D and BF30DK
• BF35A
• BF40, BF40A, BF40B, BF40D and BF40DK
• BF45A
• BF50, BF50A, BF50D and BF50DK
• HP Range: 20HP-50HP
• Engine Type: Two-, three- and four-cylinder four-stroke outboards
• Year Range: Approximately 1991 onward, depending on model family
• Serial Note: Confirm against the complete model and frame serial because later pump housings can use revised seals.

🔌 Function

The O-ring seals the water-pump housing so the impeller can draw and discharge cooling water without internal leakage.

⚠️ Common Signs of Failure

• Weak or intermittent tell-tale stream
• Overheating at idle or low speed
• Water leakage around the pump housing
• Reduced pump priming after launch
• Flattened, cut or salt-encrusted seal

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 91356-ZV5-000 (current documented Honda reference)

OEM / Related Numbers

• 91356ZV5000

Aftermarket / Verified Equivalents

• RECMAR: REC91356-ZV5-000

📦 Condition

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