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Sierra 18-3366 Marine Water Pump Impeller for OMC Johnson Evinrude Outboards

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3366
12 reviews
Sale Price

$14.68

In Stock (6)

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Usually delivered within 2 days

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3366 is a neoprene water pump impeller designed as a direct replacement for OMC, Johnson, and Evinrude outboard motors. Built to meet or exceed original equipment standards, this impeller keeps your engine's cooling system operating efficiently by maintaining proper water flow through the water pump.

Key Features:

  • 6-blade neoprene construction with brass hub for durability and reliable performance
  • OEM-quality replacement — manufactured to meet or exceed original equipment specifications
  • Direct replacement for OMC OEM part numbers 390286 and 777835
  • Outer diameter: approximately 2.004 inches
  • Hub/shaft size: 0.689 inch
  • Blade depth/height: 0.748 inch
  • Compatible with aftermarket cross-references: Mallory 9-45212, GLM 89990, SEI Marine 96-399-05E, CEF 500353

Regular impeller replacement is a critical part of outboard motor maintenance. A worn or damaged impeller can lead to overheating and serious engine damage. The Sierra 18-3366 makes it easy to restore full cooling system performance with a quality aftermarket part you can trust.

YOU HAD EXACTLY WHAT I NEEDED QUICKLY

Excellent pricing for the autovent shade I ordered. Quick and easy check out thru Amazon payments. Shipped out within 2 days. I would order from them again!

Awesome price! I couldn't find a better bargain anywhere, and I searched for days.

The best price I could find and it arrived in 2 days! I'll be doing business again.

The only recommendation I have is to include the position in the description for brake pads. I had to check another site to verify front vs. rear pads. It's not a major issue, especially because you have some of the best prices on these pads.

I was hesitant to order from Autoplicity due to the perception that the price was too good to be real (and not some scam). However, I read a few reviews on the internet and decided to take a chance. Once I placed my order I was sent a tracking number and received my car parts within 2 weeks. I was happy that I got the parts I ordered and the price was really low. Simple and quick.

Easy store to navigate through and had all the info.

Ordered the Auto Ventshade Ventvisor Deflector 4 pc. (Model 94856) for my 2000 Toyota Camry XLE. Was easy to install with no tools, just use the included strong double sided adhesive tape. Instructions that came with it could've been more detailed on where exactly to install the ventshade as I had to remove them tediously, realizing I had to put them a little higher. Also, there seems to be an unsightly gap between the front and back windows. Works as designed. Satisfied with product. Fast shipping by Autoplicity.

Easy to navigate and shipping cost reasonable.

So far so good

Great Service

I ordered this Weathertech cargo liner (order#: 8049) on a Tuesday and received it by Saturday. Speedy delivery and absolutely love this product. It is a perfect fit and still easy to get to the storage compartment of my Rav4.

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