Description
Review this item in the context of the repair, installation access, nearby parts, and the result the completed job is intended to achieve.
Product Description
Marinepro | Power Beyond The Waves
Why You Need to Replace Your Johnson Evinrude Gearcase Water Pump Impeller Cooling System Regularly
You love hitting the open water with your precious Johnson Evinrude outboard engine, but you’ve probably noticed how time takes a toll on your engine’s water pump. You’re worried that one day, mid-voyage, it’ll fail, leaving you stranded or facing a hefty repair bill. That’s where our Marinepro 0394711 gearcase water pump rebuild kit comes in to save your sailing adventures.
The Benefits of changing Your Johnson Evinrude Outboard Water Pump Impeller kit
When you replace your water pump with our Marinepro 0394711 repair kit, you’re giving your Johnson Evinrude Outboard the reliability it deserves. You’ll keep your engine cool, avoid overheating disasters, and extend its life—no more stressing about breakdowns. With the our upper gear housing water pump impeller repair kit, you can sail confidently, knowing your boat’s ready for every trip.
Reasons to Believe this Marinepro 394711 outboard impeller kit
Why trust our Marinepro 394711 repair kit? Because it’s built to OEM #0394711 specs with tough, saltwater-resistant materials like a durable impeller and leak-proof seals, perfectly matched for your Johnson Evinrude cooling system. You see, your water pump’s parts—like the rubber impeller—wear out from salt, heat, and hours on the water. Replacing them regularly with the Marinepro Johnson Evinrude outboard water pump repair kit keeps your engine humming. Tested for your 8 9.9 15 HP, the impeller kit ensures you’re back to peak performance every time.
Components of this complete gearcase water pump impeller repair kit
- 1* Neoprene Water Pump Impeller 18-3050 386084
- 1* Wear Plate 18-3178 318995
- 1* Water Pump Cup 18-3179 324097
- 1* Pump Housing 18-3180 435390
- 1* Grommet 18-3329 302497; 1* Grommet 18-2392 327035
- 1* O-Ring 18-7139 319085; 1* Pin 18-3326 300771;
- 1* Oil Seal 18-2025 318972; 1* O-Ring 18-7116 303097
- 4* Screw & Bolt 18-3369 319126
About Us
Marinepro has been committed to providing standard spare parts and high quality services to the global marine industry since its establishment. With a strong technical team and professional production equipment, we strive to provide our customers with even better products and services.




Wilderness Family –
This is the right replacement impeller that mounts under a top plate on the upper stern drive. It fits my 1988 classic OMC 4.3 liter Cobra.They give you all the parts you need for a full installation. The rubber impeller/wheel is perishable so I like to keep a couple of these on hand.
Teresa Cox –
super fast delivery and what i needed
MaineReview –
I ordered this for a back up unit to keep on the boat. On the older OMC or Mercs – these impellers and or assembly’s are known to wear out annually. Not worth overheating the engine – order a spare!
MC –
Got this for my 93 OMC Cobra 4.3. Fit and finish is as nice as any other water pump kit I’ve bought, even NOS. Everything bolted on fine, started at the engine and everything checked out. Glad these pumps are still available and reasonable, I replace mine every other season.