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K&N 66-1401 X-Stream Top Filter

Custom Assemblies > X-Stream Top Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.8 out of 5 stars   4 Customer Reviews
  • Air filter top adds filter area
  • Replaces metal factory filter lid with a lid with a built-in air filter top
  • High air flow with excellent filtration
  • Washable and reusable
K&N XStream Air Flow Tops replace the top of your existing round filter and add a new dimension to engine breathing by feeding your engine all the air it can use. They are washable and reusable just like other K&N Air Filters.


Product Specifications

Product StyleAccessories
Air Filter ShapeRound Lid
Filter MaterialCotton Gauze
Height1 in (25 mm)
Top StyleX-Stream
Top MaterialBlack Powder Coated
Outside Diameter14 in (356 mm)
Package Contents1 X-Stream Top Lid
Package Quantity1
Weight1.7 lb (0.8 kg)
Filter Re-Oiling Amount0.92 oz (27 ml)
Product Box Height15.13 in (384 mm)
Product Box Length15.38 in (391 mm)
Product Box Width2.25 in (57 mm)

K&N 66-1401 X-Stream Top Filter Product Reviews

Sunday, April 16, 2017 - Part 66-1401
Perfect product, just didn't fit my shaker set up. Car issue, not a product issue.

Craig Morton
Orangevale, California
Monday, December 26, 2016 - Part 66-1401
I have to modify my air cleaner a little more but it fits and looks good, no pics at this time. I love and have all K&N's in my Dodge. Air filter, fuel filter, breather and oil filter. Now I have an air filter in my Jeep.

James Emmons
Liverpool, New York
Sunday, October 16, 2016 - Part 66-1401
This product has improved all breathing aspects of my Ford big block 460. No change in carburation was needed. The overall satisfaction of installing this low-cost, high gain element, is indeed, very satisfying.

Anthony Aulph
Omaha, Nebraska
Saturday, August 13, 2016 - Part 66-1401
Product works great, added a 14x3 air cleaner element, truck runs awesome now. More power, better mileage. I recommend K&N products to everyone.

Christ Hoerner
Kihei, Hawaii