0331188 Evinrude Johnson O-Ring | Genuine OEM BRP Outboard Part

🔧 Product Description

Genuine BRP Evinrude Johnson Thermostat Cover O-Ring - Part Number: 0331188

A genuine BRP rubber O-ring used to seal the thermostat cover or cooling-water cover on selected Evinrude and Johnson two-stroke outboards.

The O-ring prevents cooling water from leaking around the thermostat-cover joint and maintains the pressure required to circulate water through the cylinder-head cooling passages.

⚙️ Key Features

• Genuine BRP Evinrude Johnson OEM thermostat O-ring
• Correct BRP part number 0331188
• Seals the thermostat cover to the cylinder head or cooling cover
• Used on conventional two-stroke and E-TEC outboards
• Recmar replacement O-ring available

🚤 Compatibility

Commonly used on

• Evinrude and Johnson cylinder-head thermostat covers
• Evinrude E-TEC cooling-system assemblies

Typically suits

• Engine models:
• Evinrude E-TEC 40HP
• Evinrude E-TEC 50HP
• Evinrude E-TEC 55HP commercial
• Evinrude E-TEC 60HP
• Evinrude E-TEC 75HP and 90HP
• Evinrude E-TEC 115HP and 130HP
• Evinrude E-TEC 135HP, 150HP and 175HP
• Selected late-production Evinrude and Johnson 9.9HP and 15HP two-strokes using the 331188 thermostat-cover seal
• Selected V4 and V6 thermostat-cover assemblies using 0331188 or 0765563
• HP Range: Commonly 40HP - 175HP E-TEC, plus selected small conventional two-strokes
• Engine Type: Evinrude Johnson two-stroke and direct-injection E-TEC outboard
• Year Range: Approximately 2004 - 2017 for documented E-TEC applications

🔌 Function

The O-ring seals the thermostat cover so cooling water is directed through the thermostat and cylinder-head passages without external leakage.

⚠️ Common Signs of Failure

• Cooling water leaks around the thermostat cover
• Salt deposits form at the cover joint
• O-ring becomes flattened, cracked or hardened
• Engine loses cooling-water pressure
• Cover will not reseal after thermostat servicing

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 0331188 current BRP service reference
• 0765563 related BRP thermostat O-ring reference

OEM / Related Numbers

• 0331188
• 331188
• 0765563
• 765563
• Related thermostat, thermostat cover and pressure-relief valve components

Aftermarket / Verified Equivalents

• Recmar: REC331188
• Outboard Parts: REC331188 thermostat-cover O-ring
• Direct replacement O-ring: 331188

📦 Condition

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