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