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K&N Stubstack Air Horn 5.13in L x 5.13in W x 1.68in H
K&N Stubstack Air Horn 5.13in L x 5.13in W x 1.68in H
K&N Stubstack Air Horn 5.13in L x 5.13in W x 1.68in H
K&N Stubstack Air Horn 5.13in L x 5.13in W x 1.68in H

K&N Stubstack Air Horn 5.13in L x 5.13in W x 1.68in H

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  • This is a SPECIAL ORDER item and availability can vary, please contact us for an accurate timeframe of availability before purchase. Some items can take 30+ days from manufacturer to become available.***ANY SPECIAL ORDER PLACED WITHOUT CONTACTING US FIRST IS SUBJECT UP TO A 10% CANCELLATION FEE***

  • Manufacturer Part Number: 85-0400
  • WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. PROP65 INFO
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 carburetors by decreasing the restriction around the choke horn.