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Performance Products > Stubstack Air Horn

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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.

  • Fits Holley 4150/4160 carburetors with the choke horn milled off
  • Fits inside the air cleaner housing
  • Increases the airflow by reducing restriction
  • Reduces turbulence, improves metering accuracy

Available Information

Product Specifications

Height:1.69 in (43 mm)
Length:5.13 in (130 mm)
Material Used:Polyurethane
Package Quantity:1
Part Number:85-0400
Product Box Height:3.7 in (94 mm)
Product Box Length:10.4 in (264 mm)
Product Box Width:10.1 in (257 mm)
Product Style:Accessories
Weight:0.04 lb (0.02 kg)
Width:5.13 in (130 mm)