0343141 Evinrude Johnson Thermostat Cover | Genuine OEM BRP Outboard Part

🔧 Product Description

Genuine BRP Evinrude Johnson Thermostat Cover - Part Number: 0343141

A genuine BRP thermostat cover for selected 40HP-140HP Evinrude and Johnson two-stroke outboards.

The cover retains the thermostat, spring and pressure-control components against the cylinder-head or crankcase cooling passage.

Part number 0343141 replaces earlier thermostat-cover reference 0339207 on applicable engines.

⚙️ Key Features

• Genuine BRP OEM thermostat cover
• Correct OEM part number 0343141
• Common unprefixed number 343141
• Used on selected midrange and V4 engines
• Moulded marine cooling-system component
• Accepts the applicable thermostat and pressure-control spring
• GLM direct replacement available

🚤 Compatibility

Commonly used on selected

• 40HP-70HP two-stroke outboards
• 90-degree V4 engines
• 90HP-140HP outboards using the applicable thermostat arrangement
• Verified 1994 Johnson 140HP applications
• Verified 1995-1996 Evinrude and Johnson 130HP applications
• Engines whose cooling-system diagram lists 0339207 or 0343141

Important fitment note

• Some engines use two thermostat covers—one for each cylinder bank.
• Confirm the required quantity and cover orientation.
• Spring, thermostat, gasket and fasteners are not necessarily included.
• Similar covers may use different internal depths or hose connections.

🔌 Function

The cover retains the thermostat and directs cooling-water flow through the thermostat and pressure-relief passages.

Installation considerations

• Inspect the sealing face
• Clean all salt and gasket residue
• Confirm the thermostat and spring orientation
• Install a new gasket
• Replace damaged bolts
• Tighten evenly to avoid cracking the cover
• Do not overtighten plastic components
• Check carefully for cooling-water leaks

⚠️ Common Signs of Failure

• Cover is cracked
• Mounting ears are broken
• Sealing face is warped
• Bolt holes are damaged
• Salt corrosion affects the internal cavity
• Water leaks around the cover
• Spring seat is worn
• Thermostat components no longer remain correctly positioned

🔄 Supersession & Cross Reference

OEM Supersession / Related Chain

• 0339207
• 339207
• 0343141
• 343141
• 0769795
• 769795

Aftermarket / Verified Equivalents

• GLM: 13240
• Pro Marine: 13240
• Aftermarket thermostat cover replacing 0339207 / 0343141 / 0769795

Related Components

• V4 spring: 0343020
• Selected 40HP-70HP spring: 0343977
• Thermostat and gasket references vary by engine family

📦 Condition

• Genuine BRP Evinrude Johnson OEM part
• Brand new
• Thermostat, spring, gasket and hardware included only when specifically stated
• Supplied in genuine or equivalent protective packaging