Prices are melting for cool savings.
Save Now during our BIGGEST Sale of the Year!

Stainless Steel Lock Nut - 18-3720-9 - Sierra

Save 39% Off.
Stainless Steel Lock Nut - 18-3720-9 - Sierra
Meltdown Sale Price: $9.42
Save: $6.25
(39% Off $15.67)
Part # 18-3720-9 ValueShip™ Eligible
No Reviews | Write Review | Ask Question
This item is found in the following Product Families
Mariner Stainless Steel Locknuts
Mariner Stainless Steel Locknuts
Stainless Steel Locknuts for Mercruiser
Mercury Stainless Steel Locknuts
GLM 21160 replacement parts
Replaces OEM part #
  • MERCURY MARINE 11-34932
Package of 5
Thread Size 3/8"- 24
Ask a question for
Question & Answer Guidelines
This product ships in 1 business day.

Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
* Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Do you need Professional Installation? has teamed with a national network of independent installers that are ready to handle your installation needs.
Find your local Amtech dealer:
Save More Now during the Summer Price Meltdown Sale!