0354759 Evinrude Johnson O-Ring | Genuine OEM BRP Outboard Part

🔧 Product Description

Genuine BRP Evinrude Johnson Water Pressure Relief Valve Housing O-Ring - Part Number: 0354759

A genuine BRP O-ring used to seal the cover of the water-pressure relief or blow-off valve on selected 115HP and larger Evinrude outboards.

The O-ring prevents cooling water from leaking around the valve-housing cover and maintains the pressure required for the relief-valve diaphragm and plunger to operate correctly.

⚙️ Key Features

• Genuine BRP Evinrude Johnson OEM valve O-ring
• Correct BRP part number 0354759
• Seals the water-pressure relief valve housing cover
• Used on selected large E-TEC and direct-injection engines
• Suitable for pressure-relief and blow-off valve assemblies

🚤 Compatibility

Documented applications include

• Evinrude E-TEC 115HP
• Evinrude E-TEC 130HP and 135HP
• Evinrude E-TEC 150HP
• Evinrude E-TEC 175HP and 200HP
• Evinrude E-TEC 225HP and 250HP
• Selected 275HP and 300HP engines using the same relief-valve housing
• Standard and H.O. applications where 0354759 is shown
• HP Range: Commonly 115HP - 300HP
• Engine Type: Evinrude direct-injection and E-TEC two-stroke outboard
• Application: Cooling-system water-pressure relief valve

🔌 Function

The O-ring seals the pressure-relief valve housing so the diaphragm, spring and plunger can regulate cooling-water pressure without external leakage.

⚠️ Common Signs of Failure

• Cooling water leaks around the valve cover
• Salt deposits form around the relief-valve housing
• Cooling-water pressure becomes unstable
• Engine overheats or runs too cool
• O-ring becomes flattened, cut or hardened
• Valve cover will not reseal after diaphragm service

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 0354759 current BRP pressure-relief valve O-ring reference

OEM / Related Numbers

• 0354759
• 354759
• 5006147 related pressure-relief valve assembly
• 5007970 related pressure-relief valve assembly
• 5008108 related blow-off valve assembly
• 0347244 related diaphragm
• 0347245 related plunger seal
• 0347240 related housing plate

Aftermarket / Verified Equivalents

• Direct replacement valve O-ring: 354759
• Included in compatible water-pressure relief valve repair assemblies

📦 Condition

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