Loading... Please wait...

Support Forum for CVP products

CV Performance
recommends AMSOIL

CV Performance recommends AMSOIL


Our Newsletter

CVP Mixture Screw Packing

Share this page with:
Retail Price:
Sale Price:
Ships within 2-3 business days of ordering.

Add this item to view in shopping cart.


Replacement packing for use with the EZ-Just mixture screw or stock mixture screw. Includes the Viton® o-ring, washer, and spring that can be lost when removing the original mixture screw. These repack parts are a CVP exclusive and not available from the factory.

Fits Harley Keihin 'Butterfly' and CV style carburetors 1981-2006.

This packing kit has also been successfully used on many CVK40, CVK36, and CVK34 carburetors.*

Note that in areas now using Ethanol as a 10% fuel additive, replacing the original rubber o-ring under the mixture screw with a Viton® o-ring can prevent possible failure. Early factory o-rings will not withstand added Ethanol or other fuel additives for extended periods. CVP was the first to offer the original mixture packing kit and also the only company to use the higher quality Viton® o-ring. Be aware that other components used in motorcycle fuel systems are not designed to be used with fuel exceeding 10% Ethanol. It is recommended to avoid using E85 fuel on carbureted Harley motorcycles.

*CV Performance has only tested the mixture packing kit on early Harley butterfly, CV40, CVK40, and select CVK36 carburetors. Successful use on other Keihin CVK models is not guaranteed in all circumstances and therefore not covered under our return policy.

Find Similar Products by Category

Write your own product review

Product Reviews

Showing reviews 1-4 of 38 | Next

  1. Saved the day

    Posted by on

    Got me back on the road since Harley doesn't sell it and I couldn't find it anywhere I came across this site after a bit because I have a Butterfly carb and CV Performance Specializes in CV carbs I'm Happy I found these guys.

  2. Adjusting made easy

    Posted by on

    Quality product. Ordered this along with the adjusting screw. Makes adjusting the mixture a snap. Recommend both.

  3. Excellent Product

    Posted by on

    Good quality, if you are rebuilding your carb don't miss replacing these parts, it could save you a lot of time and aggravation. Worth the price.

  4. rebuild

    Posted by on

    Needed to rebuild my CV, and ordered the mixture spring and o-ring. Easy rebuild when all parts are present.

Showing reviews 1-4 of 38 | Next

  Safe Shopping 100% Safe & Secure Shopping
  Free Shipping in the US FREE Shipping on
Qualified Orders

Connect with us
Follow Us on Facebook Follow Us on Instgram Support Forum Follow Us on Twitter Follow Us on YouTube