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Sierra 18-3714 Brass Castle Washer for Mercury MerCruiser Propellers

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-3714
10 reviews
03/13/2036 3:42 AM
Sale Price

$9.99

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3714 is a brass castle washer that supports the prop nut and locking tabs on traditional rubber hubbed propellers. This precision-engineered marine hardware replaces Mercury MerCruiser OEM part numbers 12-31211, 12-31211A2, 12-31211A3, and 12-31211Q03.

Compatibility:

  • Fits Mercury/Mariner 135-275 HP (V6, 2-cycle) outboards
  • Compatible with MerCruiser Alpha and Bravo I stern drives without Flo-Torq II Hub
  • Designed for all traditional rubber hubbed propellers
  • Not used with newer style Flo-Torq II or Michigan Vortex style propellers

Key Features:

  • Constructed from durable brass material for corrosion resistance in harsh marine environments
  • Precision-manufactured to meet or exceed OEM specifications
  • Essential component for secure propeller installation and retention

Interchangeable With: GLM 21360, Mallory 9-73902, and various Mercury/MerCruiser part numbers. This genuine Sierra replacement part ensures reliable performance and proper fitment for your marine propulsion system.

This copany shipped my order promptly. I would do business with them again.

very good

Fast shipping, the exhaust fit perfectly and sounds great!

Good experience,east to navigate site,easy checkout,very good price!

They are excellent. They were able to send out my item as early as the next day. I am anticipating my product by early next week. Great!

Nice and quick. Well scripted to take customer info straight from paypal. That was what...4 clicks? Nice!

Very competitive low prices and great product selection. Will definitely look to this vendor when purchasing automotive parts in the future.

Great price & part in stock & was told would ship today !

Item arrived as ordered and they had the lowest price!

One of the best prices on the web for my Bilstein shocks. And super fast shipping! I ordered on a Mon night and they arrived Wed afternoon!!

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