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Sierra 18-3701 Prop Nut Kit for Mercury Mariner Outboards & MerCruiser

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-3701
14 reviews
03/14/2036 10:50 AM
Sale Price

$16.71

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Sierra 18-3701 Prop Nut Kit is an essential replacement hardware kit designed for securing propellers on Mercury and Mariner outboard motors, as well as MerCruiser sterndrive units. This OEM-quality kit ensures your propeller is properly fastened for safe and reliable operation on the water.

Key Features:

  • Complete prop nut kit with two tab washers for secure installation
  • Compatible with Mercury/Mariner 75 HP and higher outboard motors
  • Fits MerCruiser Alpha One and Bravo sterndrive units
  • Designed for single propeller applications
  • Corrosion-resistant marine-grade materials for saltwater durability
  • Direct replacement for worn or damaged propeller hardware

Compatibility Note: This kit is not compatible with Mercury 225 EFI 4-stroke outboard motors. The included tab washers provide positive locking to prevent the prop nut from loosening during operation, ensuring your propeller stays securely attached in all conditions.

Sierra Marine is a trusted name in aftermarket marine parts, offering reliable replacement components that meet or exceed OEM specifications. Regular inspection and replacement of propeller hardware is an important part of marine engine maintenance.

Products specifications

Application

Mercury/Mariner

Contents of Kit

Prop Nut 3700 (1), Prop Spacer 3200 (1)

OEM Number

11-52707Q1, 11-52707A1

Best Price on this product that I've found. Thank you Unfortunately I'm going to have to return the item since it won't fit my application.

Good comunication best prices on the web

I reciently ordered some spark plug wires from Autoplicity and I must say it was a great experience. The shipping was fast and they had the best price I could find. I will def order parts for my truck from them again.

Great shopping experience

Quick Ship. Thanks. Low Prices.

Good price

Quick easy

This is the first time I've ordered from Autoplicity. I found they had the best price on the item I was looking for and decided to try them. I ordered this item yesterday(Sunday) and was just informed that it shipped. That is quick. I am pleased with their customer service and will use them as my first source.

Great price, fast shipping. Ordered Monday afternoon and had it Wednesday morning. Their customer service is very helpful and they usually have the parts I need in stock.

Great price, fast shipping and the items was correct. A perfect transaction. Thank you!

So far great, no problems. Received order on 04/21/2015

I have used them a couple times. Always seem to be one of the lowest prices on the internet and pretty quick turnaround on shipping. If you live near Los Angeles, they have a warehouse in Cerritos, so things arrive real quick once they're shipped.

Great price on the mufflers! Hopefully, the start of a beautiful relationship.

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