Product Code: 0120
Availability: In Stock
Price: $25.00
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Harley JD Top Cylinder Plug Nuts and Washers.

Includes 2 nuts and 2 washers.
Fits all Harley Model J's and F's from 1909 - 1929 
1/2-18 thread. 
Nickel Plated

Made in the USA.

Made by Competition Distributing with US steel in the USA.

These are included with all of our Cylinder Plugs Part Numbers:  10A9, 17-13, `7-20, 18-10, 18-11, 18-20, 18-21, 18-25

***Cylinder Plug in pictures is for reference.  It is NOT Included.  

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Welcome to our new website

Welcome to our new web site! We are located in the heart of the Black Hills in Sturgis, South Dakota where we specialize in Harley Davidson® Pre 1936 and other models such as Indian, Flying Merkel, and other custom manufactured products.

We have been manufacturing antique motorcycle products in the USA for over 30 years. We have a customer base of collectors and restorers that spans all over the world. Our goal is Quality, Correct Products with First Class Service.

If you wish to look at the products we manufacture, click on Catalog (at the top of the page). If you wish to purchase from our catalog, you must Create an Account.

You can visit OUR SHOP to see pictures of our facility, motorcycles, parts, and machine shop.

Contact Us



3570 Mayer Ave. Ste A, Sturgis, SD 57785

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Competition Distributing 2013,
3570 Mayer Ave. Ste A, SD 57785, Ph.605-720-1903