# 0339044 Evinrude Johnson Gasket Thermostat | Genuine OEM BRP Outboard Part

🔧 Product Description

  

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

  

A genuine BRP cooling-system gasket installed between the thermostat assembly and cylinder-head passage on selected conventional and E-TEC outboards.

  

The gasket seals the thermostat flange to the cylinder head, preventing external water leakage and ensuring cooling water is directed through the thermostat.

  

⚙️ Key Features

  

• Genuine BRP Evinrude Johnson OEM thermostat gasket

• Correct BRP part number 0339044

• Seals the thermostat assembly to the cylinder head

• Used in multiple loop-charged and E-TEC thermostat systems

• Recmar and GLM replacements available

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 0339044 current BRP thermostat-gasket reference

  

OEM / Related Numbers:

  

• 0339044

• 339044

• 0331188 related thermostat-cover O-ring

• 0338632 related thermostat cover

• 0435491 related thermostat

• 5005440 related E-TEC thermostat

  

Aftermarket / Verified Equivalents:

  

• Recmar: REC339044

• GLM: 33070

• Direct aftermarket thermostat gasket: 339044

  

🚤 Compatibility

  

Commonly used on:

  

• Two-cylinder and three-cylinder loop-charged cooling systems

• V4 and V6 thermostat assemblies

• Evinrude E-TEC thermostat systems

  

Documented applications include:

  

• Evinrude E-TEC 40HP

• Evinrude E-TEC 50HP

• Evinrude E-TEC 55HP commercial

• Evinrude E-TEC 60HP

• Selected 90HP - 175HP engines using thermostat cover 0338632

• Evinrude 135HP 2005

• Evinrude 225HP 1997

• Additional V4 and V6 thermostat housings where 0339044 is specified

  

• Engine Type: Evinrude Johnson loop-charged two-stroke, direct-injection and E-TEC outboard

• Year Range: Engine and thermostat-housing dependent

  

🔌 Function

  

The gasket closes the joint between the thermostat assembly and cylinder head so cooling water cannot escape or bypass the thermostat.

  

Common signs of failure:

  

• Cooling water leaks around the thermostat flange

• Salt deposits form at the cylinder-head joint

• Engine runs too cold because water bypasses

• Engine overheats because the gasket is distorted

• Gasket tears during thermostat removal

• Mating surfaces will not seal after corrosion cleaning

  

📦 Condition

  

• Genuine BRP part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 4.5 AUD
- **Vendor:** BRP (Evinrude/Johnson)
- **Tags:** Evinrude Johnson Outboard Parts | BRP Marine Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4.50 AUD | In stock |

## Images

- 0339044 Evinrude Johnson Gasket Thermostat | Genuine OEM BRP Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/0339044-gasket-thermostat-brp-evinrude-johnson)
> Updated: 2026-07-12