339044 Evinrude Johnson Thermostat gasket | Genuine OEM BRP Outboard Part

🔧 Product Description

Genuine BRP Evinrude Johnson Thermostat-to-Cylinder-Head Gasket - Part Number: 0339044

A genuine BRP thermostat gasket used on selected Evinrude and Johnson two-stroke outboards.

The commonly listed six-digit reference is 339044. The full OEM number is 0339044.

The gasket seals the thermostat housing or cover against the cylinder-head cooling passage, preventing water loss and cross-leakage around the thermostat.

⚙️ Key Features

• Genuine BRP OEM thermostat gasket
• Correct full OEM number 0339044
• Common unprefixed number 339044
• Thermostat-to-cylinder-head sealing application
• Precision die-cut gasket profile
• Used on selected direct-injection and conventional two-stroke engines
• Recmar replacement available

🚤 Compatibility

Verified catalogue examples include

• 2000 Evinrude 150HP FFI / FICHT engines
• 2010 Evinrude 150HP E-TEC engines
• Additional V6 direct-injection and E-TEC cylinder-head assemblies whose diagrams list 0339044

Important fitment note

• Confirm the gasket outline and bolt-hole arrangement.
• Thermostat covers and cylinder heads changed between FICHT, E-TEC and carburetted engine families.
• Do not reuse a compressed thermostat gasket.

🔌 Function

The gasket seals the thermostat cooling-water passage.

Installation considerations

• Remove all old gasket material
• Clean the cover and cylinder-head surface
• Inspect for corrosion and warping
• Install the gasket dry unless the service manual specifies sealant
• Tighten the cover in the correct sequence
• Replace the thermostat and seals where required
• Check for water leakage after starting
• Compare cylinder-bank operating temperatures

⚠️ Common Signs of Failure

• Water leaks from the thermostat cover
• Salt deposits appear around the joint
• Cooling pressure falls
• Air enters the cooling passage
• Gasket is torn or compressed unevenly
• Cylinder-head sealing surface is corroded
• Engine temperature differs between cylinder banks

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 0339044
• 339044
• OEM Description: Thermostat Gasket
• Alternate Description: Thermostat-to-Cylinder-Head Gasket
• Thermostat, cover and pressure-control components vary by engine model

Aftermarket / Verified Equivalents

• Recmar: REC339044
• Generic thermostat gasket replacing 0339044
• Aftermarket engine-gasket sets may include the same thermostat gasket

📦 Condition

• Genuine BRP Evinrude Johnson OEM part
• Brand new
• Supplied in genuine or equivalent protective packaging