0335523 Evinrude Johnson O-ring | Genuine OEM BRP Outboard Part

🔧 Product Description

Genuine BRP Evinrude Johnson Cylinder Head Cooling-Jacket O-Ring - Part Number: 0335523

A genuine BRP large rubber O-ring used to seal the cylinder head or cylinder-head cooling cover on selected Evinrude and Johnson outboards.

The O-ring seals the cooling-water jacket around the cylinder head and prevents water from leaking externally or bypassing between cooling passages.

⚙️ Key Features

• Genuine BRP Evinrude Johnson OEM cylinder-head O-ring
• Correct BRP part number 0335523
• Used on conventional V4, V6 and E-TEC cylinder heads
• Large moulded cooling-jacket seal
• Sierra, GLM and direct aftermarket replacements available

🚤 Compatibility

Commonly used on

• Evinrude Johnson V4 and V6 cylinder-head cooling jackets
• Evinrude E-TEC cylinder-head and water-cover assemblies

Typically suits

• Engine models:
• Evinrude and Johnson 90HP
• Evinrude and Johnson 100HP
• Evinrude and Johnson 105HP
• Evinrude and Johnson 115HP
• Evinrude and Johnson 130HP and 135HP
• Evinrude and Johnson 150HP
• Evinrude and Johnson 175HP
• Evinrude and Johnson 200HP
• Evinrude E-TEC 40HP through 90HP
• Evinrude E-TEC 115HP through 200HP where the 335523 head seal is specified
• HP Range: 90HP - 200HP conventional two-stroke; approximately 40HP - 200HP E-TEC
• Engine Type: Evinrude Johnson two-stroke and E-TEC direct-injection outboard
• Year Range: Approximately 1991 - 2004 for conventional engines and 2004 onward for compatible E-TEC applications

🔌 Function

The O-ring seals the cylinder-head cooling-water jacket and keeps water within the intended cooling passages.

⚠️ Common Signs of Failure

• Water leaks around the cylinder-head cover
• Salt deposits appear around the head perimeter
• Engine overheats because cooling water bypasses
• O-ring becomes flattened, cracked or hardened
• Cylinder-head cover will not reseal after removal

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 0335523 current BRP service reference
• 0765554 related BRP replacement and service-pack reference

OEM / Related Numbers

• 0335523
• 335523
• 0765554
• 765554
• Related cylinder-head cover, thermostat and water-jacket components

Aftermarket / Verified Equivalents

• Sierra: 18-7110
• Sierra: 18-7110-9 multipack
• Sierra: 18-0490 related gasket-set application
• GLM direct replacement: 335523
• Direct aftermarket cylinder-head O-ring: 0335523

📦 Condition

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