# 0335981 Evinrude Johnson Evinrude Johnson 90-175hp Thermostat Seal | Genuine OEM BRP Outboard Part

🔧 Product Description

  

Genuine BRP Evinrude Johnson 60-Degree V4 and V6 Thermostat Seal - Part Number: 0335981

  

A genuine BRP moulded thermostat seal for selected 90HP to 175HP 60-degree V4 and V6 two-stroke outboards.

  

The seal locates the thermostat within the cylinder-head cooling passage and prevents water from bypassing around the thermostat body.

  

⚙️ Key Features

  

• Genuine BRP Evinrude Johnson OEM thermostat seal

• Correct BRP part number 0335981

• Designed for 60-degree V4 and V6 cooling systems

• Used on selected 90HP to 175HP engines

• Sierra, WSM and Outboard Spares replacements available

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 0335981 current BRP thermostat-seal reference

  

OEM / Related Numbers:

  

• 0335981

• 335981

• Related thermostat, thermostat cover and pressure-relief components

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-1507

• WSM: 550-07

• Outboard Spares: OSTS335

• Direct replacement thermostat seal: 335981

  

🚤 Compatibility

  

Commonly used on:

  

• Evinrude Johnson 60-degree V4 and V6 thermostat housings

  

Typically suits:

  

• Engine models:

• Evinrude and Johnson 90HP - approximately 1995-2006

• Evinrude and Johnson 100HP and 105HP commercial

• Evinrude and Johnson 115HP - approximately 1995-2006

• Evinrude and Johnson 135HP

• Evinrude and Johnson 150HP - approximately 1993-2006

• Evinrude and Johnson 175HP - approximately 1993-2006

• Selected 200HP and 250HP 60-degree engines where the 335981 seal is specified

• Johnson Fast Strike and Evinrude Intruder models

• Johnson OceanRunner and Evinrude Ocean Pro models

  

• HP Range: Commonly 90HP - 175HP, with selected applications through 250HP

• Engine Type: Evinrude Johnson 60-degree V4 and V6 two-stroke outboard

• Year Range: Approximately 1991 - 2006, dependent on cooling-system design

  

🔌 Function

  

The seal holds the thermostat in position and ensures cooling water passes through the thermostat rather than around its outside diameter.

  

Common signs of failure:

  

• Engine runs too cold because water bypasses the thermostat

• Engine overheats because the seal is distorted

• Cooling water leaks around the thermostat housing

• Seal becomes hardened, swollen or split

• Thermostat sits loosely in the cylinder-head passage

  

📦 Condition

  

• Genuine BRP part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 9.8 AUD
- **Vendor:** BRP (Evinrude/Johnson)
- **Tags:** Evinrude Johnson Outboard Parts | BRP Marine Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 9.80 AUD | In stock |

## Images

- 0335981 Evinrude Johnson Evinrude Johnson 90-175hp Thermostat Seal | Genuine OEM BRP Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/0335981-evinrude-johnson-90-175hp-thermostat-seal)
> Updated: 2026-07-11