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This K&N Stubstack is designed to be used on Holley 390-850 cfm square bore carbs (4150/4160), that have had the choke horn milled off, but do not use an air cleaner. The full radius design helps to increase the airflow for drag racing. Will also hold down the base plate of a cold air scoop. Will not work with K&N Custom Chrome Racing Air Cleaners. The K&N Stubstack is designed to increase the airflow of carburetors by decreasing the restriction around the choke horn. Stubstacks fit inside the air cleaner housing and slide snugly down over the choke horn.
  • Designed For Increased Performance
  • Utilizes The Finest Quality Components
  • Reduces Restriction
  • Straightens And Speeds Up Air-Flow
  • Will Not Fit All Carburetors
  • May Have To Alter Stub stack
  • Polyurethane Material
  • Easily Filed And Sanded
Attributes
Country of Origin (Primary) US
Emission Code Legal US
Harmonized Tariff Code (Schedule B) 3921190000
Hazardous Material Code N
Height 0.56 in (14 mm)
Length 6.54 in (166 mm)
Life Cycle Status Code 2
Life Cycle Status Description Available To Order
Material Used Polyurethane
MSDS Required Flag N
NAFTA Preference Criterion Code B
Package Quantity 1
Product Style Accessories
Warranty Time 3
Weight 0.3 lb (0.1 kg)
Width 6.54 in (166 mm)

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K&N 85-0500 Stubstack Air Horn

  • Brand: K&N
  • Product Number: 85-0500
  • $35.99