K&N Stubstack Air Horn - 85-0400

This K&N Stubstack^® is designed to be used with Holley^® 390-850 cfm square bore carbs (4150/4160)that have had the choke horn milled off and still use an air cleaner. Eliminates the need for hand polishing and radius work. Will work with all K&N Custom Chrome Racing Air Cleaners including Tall Velocity Stack Air Cleaners. The K&N Stubstack is designed to increase the airflow of carburettors by decreasing the restriction around the choke horn.

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