GLM 21240 replacement parts

Propeller Lock Nut - Sierra
Sierra 18-3704 Propeller Lock Nut
Your Price: $9.74
Save: $7.13
(42% Off $16.87)
Part # 18-3704 ValueShip™ Eligible
SHIPS TODAY!* if ordered in 2 hrs 0 mins.
Replaces OEM part #
  • MERCURY MARINE 11-69578
  • MERCURY MARINE 11-69578Q1
  • MERCURY MARINE 11-69578A1
  • MERCURY MARINE 11-69578A2

Propeller Nut for Mercury, Mariner 11-69578A1 11-69578Q1, GLM 21240 21260

Average Customer Review for Sierra 18-3704 Propeller Lock Nut
Full StarFull StarFull StarFull StarFull Star Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarGood to go
by Johnson from Millbrook, Alabama on March 01, 2015
Machine work, materials and fit were top drawer.
Was this review helpful?
Full StarFull StarFull StarFull StarFull StarGreat ser.
by Mike from Hopkinsville, Kentucky on August 16, 2013
Was this review helpful?
What is the thread size?
Sierra can only match it up by engine application. There are no specs on this.
Ask a question
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