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Vehicle Info NeededK&NPART NUMBER: 599-66-1401
66-1401 X-Stream Air Flow Top - Black 14 in.
$7599
Ships on 09/08/2026
Lowest Price GuaranteeX-Stream Air Flow Tops
- X-Stream Air Flow Top - Black
- 14''
Testing conducted on an 14' x 3' air cleaner showed:
Without X-Stream Top = 800 cfm With X-Stream Top = 1030 cfmTesting conducted on an 14' x 4' air cleaner showed:
Without X-Stream Top = 1195 cfm With X-Stream Top = 1378 cfmTesting conducted on an 14' x 4.5' air cleaner showed:
Without X-Stream Top = 1390 cfm With X-Stream Top = 1612 cfm
- K&N unlocks the power with the new X-Stream Air Flow Top.
- Most surface area possible for restricted clearances
- Sizes include 9", 11" and 14" diameters
- Color rings include black, red, blue, and polished
Not only does the K&N X-Stream add filter area, it actually redirects airflow inside the filter to pull in more air through the side pleats for even greater performance efficiency. Cleanable and reusable, the X-Stream Air Flow filter delivers the best protection available for your engine, and comes in a wide range of sizes and colors. Features:
Part TypeAir Cleaner Top
Product LineK&N X-Stream Air Flow Filter Assemblies, Tops and Elements
BrandK&N
Package Height1 in (25 mm)
Package WidthN/A
Package Length16.6
Weight2.06 PG
Weight1.7 lb (0.8 kg)
Part CategoryPerformance Parts
Top MaterialBlack Powder Coated
Diameter InsideN/A
ShapeRound Lid
Air Cleaner Size (In.)14 diameter
Air Cleaner Top DesignX-Stream airflow
Air Cleaner ShapeRound
Top StyleX-Stream
Air Cleaner Top MaterialAluminum
Filter StyleDry
Cap Outside DiameterN/A
Frame DesignRigid
FlangesNone
QuantitySold individually
Overall LengthN/A
Filter MaterialCotton Gauze
Air Filter ShapeRound Lid
Wing Nut IncludedNo
Oil IncludedYes
Filter Re-Oiling Amount0.92 oz (27 ml)
Air Cleaner Top FinishBlack powdercoated
Part FitmentUniversal
Outside Diameter14 in (356 mm)
WashableYes
Diameter Outside14 in (355.6 mm)
Vendor Part Number66-1401
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations
