# 0439077 Evinrude Johnson Kit Water Pump Assembly | Genuine OEM BRP Outboard Part

🔧 Product Description

  

Genuine BRP Evinrude Johnson Water Pump Kit with Housing and Wedge Key - Part Number: 0439077

  

A genuine BRP complete water-pump repair kit for selected commercial and heavy-duty Evinrude and Johnson gearcases.

  

The kit includes the pump housing and is supplied with alternative wedge-style impeller keys so the installer can select the correct key for the driveshaft configuration.

  

⚙️ Key Features

  

• Genuine BRP OEM water-pump assembly kit

• Correct OEM part number 0439077

• Common unprefixed number 439077

• Complete kit with pump housing

• Wedge-style impeller-key configuration

• Typically supplied with two alternative keys

• Sierra replacement kits available

  

🔄 Supersession & Cross Reference

  

OEM Supersession / Related Chain:

  

• 0391635

• 391635

• 0390770

• 390770

• 0396932

• 396932

• 0396933

• 396933

• 0439077

• 439077

• 0777808

• 777808

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-3399 - complete pump kit

• Sierra: 18-3385 - related pump-kit configuration

• Sierra: 18-3380 - related service kit without housing / pin-style application

• Aftermarket 439077 complete water-pump kits

• ROP Shop replacement kit for 0439077

  

Aftermarket kit note:

  

• Sierra 18-3380 does not have the same contents as the complete housing kit.

• Confirm housing inclusion and key style before substitution.

  

🚤 Compatibility

  

Commonly used on selected:

  

• 40HP Commercial models

• 40HP RP and RW gearcase models

• Selected 40HP-60HP commercial or heavy-duty gearcases

• Verified 40 Commercial applications from approximately 1995-2001

• Gearcases whose diagram specifies 0396932, 0396933 or 0439077

  

Important fitment note:

  

• This kit is not the same as every standard 40HP-60HP pump kit.

• Confirm the commercial-model suffix and gearcase diagram.

• Select the correct wedge key according to the supplied instructions.

  

🔌 Function

  

The pump draws cooling water through the lower-unit intakes and delivers it to the powerhead.

  

Common signs of pump failure:

  

• Weak tell-tale

• Engine overheats

• Impeller vanes are damaged

• Pump housing is distorted

• Wear plate is grooved

• Impeller key is worn

• Water-tube grommet leaks

• Pump fails to prime

  

Installation considerations:

  

• Identify the correct impeller key

• Inspect the driveshaft key area

• Remove old rubber fragments

• Replace the housing where worn

• Fit new gaskets and O-rings

• Seat the water tube correctly

• Rotate the driveshaft in the operating direction during assembly

• Verify cooling-water flow after installation

  

📦 Condition

  

• Genuine BRP Evinrude Johnson OEM part

• Brand new complete service kit

• Contents may vary according to production packaging

• Supplied in genuine or equivalent protective packaging

## Details

- **Price:** 152.96 AUD
- **Vendor:** BRP (Evinrude/Johnson)
- **Tags:** Evinrude Johnson Outboard Parts | BRP Marine Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 152.96 AUD | In stock |

## Images

- 0439077 Evinrude Johnson Kit Water Pump Assembly | Genuine OEM BRP Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/0439077-kit-water-pump-assembly)
> Updated: 2026-07-12