K&N XStream® Air Flow Assemblies, Filters, and Filter Tops

 

XStream Air Flow Tops
Replaces the metal top of your existing round filter.

 

K&N gives you the power you've been looking for with the new XStream® Air Flow Top. 

Cleanable and reusable, the XStream® Air Flow Top filter delivers outstanding engine protection and comes in a wide range of applications. Sizes include 9, 11, 14 and 16-inch diameters. The 14-inch tops are available in anodized black, red, blue or chrome trim ring.

K&N XStream Air Flow Top
 

XStream Air Flow Tops

Dia. Part #  Color
9"   66-0901 Black
11"  66-1101 Black
14"  66-1401 Black
16"  66-1601 Black

Dia. Part #    Color
14"  66-1401XB Blue
14"  66-1401XP Chrome
14"  66-1401XR Red
 
 

XStream Assemblies

Total Height = minimum clearance required above carburetor flange.
 

K&N 11" Assemblies

 11 " ASSEMBLIES

Neck    Element  Part #   Part #          Total 
Flange  Height   Element  Complete Assy.  Height     Color  
5-1/8"  2-3/16"  E-1200   66-3110         3-1/2"     Black
5-1/8"  3-1/2"   E-1250   66-3120         4-3/4"     Black
5-1/8"  5"       E-3680   66-3130         6-1/4"     Black
7-5/16" 3-1/2"   E-1250   66-3140         4-1/2"     Black

9 " ASSEMBLIES
Neck    Element  Part #   Part #          Total  
Flange  Height   Element  Complete Assy.  Height     Color  
5-1/8"  2-3/4"   E-3530   66-3150         4-3/8"     Black
5-1/8"  2-3/4"   E-3530   66-3160         8-1/4"*    Black

14" ASSEMBLIES
Neck    Element  Part #   Part #          Total
Flange  Height   Element  Complete Assy.  Height     Color  
STANDARD 9/16" RAISED BASE
5-1/8"  2-5/16"  E-3740   66-3000         3-7/8"     Black
5-1/8"  3"       E-1650   66-3010         4-5/8      Black
5-1/8"  4"       E-3750   66-3020         5-7/8"     Black
5-1/8"  5"       E-3760   66-3030         6-7/8"     Black

1-1/4" DROP BASE
5-1/8"  3"       E-1650   66-3040         2-3/4"     Black
5-1/8"  4"       E-3750   66-3060         3-3/4"     Black
5-1/8"  5"       E-3760   66-3070         4-3/4"     Black

7/8" DROP BASE
5-1/8"  3"       E-1650   66-3050         3-1/8"     Black

DOMINATOR
7 5/16" 4"       E-3750   66-3080         5-1/2"     Black
7-5/16" 5"       E-3760   66-3090         6-1/2"     Black
7-5/16" 6"       E-3770   66-3100         7-1/2"     Black
 
 

XStream Pre-Wrap

XStream® Top PreCharger Wraps

Extends your Filtercharger's service interval in dusty conditions.
 
 

XStream® Chevy & GMC Replacement Lid

XStream® Chevy & GMC Replacement Lid
 
 

XStream® Universal Air Filters - Designed for Serious Racers

XStream Universal Clamp-on Filter Diagram  K&N XStream Clamp-On Air Filters  K&N XStream Universal Air Filters
 
To find an XStream universal air filter for your need go to our universal air filter search page, select a style (round tapered, etc.) then choose "Top Style" as one of your search attributes along with "X-Stream".  The result will only display X-Stream top filters for the filter type selected.
 

These filters are legal ONLY for racing vehicles.  Not applicable, nor intended for use on emission controlled street or highway vehicles.