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CVP Mixture Screw Packing

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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.

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Product Reviews

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  1. Parts

    Posted by on

    All parts fit well. Thanks

  2. Perfect add on

    Posted by on

    Added to the ez-just screw qualified me for free shipping so it only ended up being a few dollars more than if I hadn't bought it and paid for shipping.

  3. 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.

  4. Adjusting made easy

    Posted by on

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

Showing reviews 1-4 of 40 | Next

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