Standard Round Air Filters
Part Number
Outside Dia. (A)
Height (H)
Wire Mesh
E-3490
7-3/4"
3"
None
E-3500
9"
3"
None
E-3690
11"
6"
None
E-1420
12"
5-1/2"
None
KNN-E1650
14"
3"
None
KNN-E3745
14"
3-1/2"
Inside
KNN-E3750
14"
4"
Inside
KNN-E3732
14"
4-1/2"
None
KNN-E3760
14"
5"
Inside
KNN-E3770
14"
6"
Inside
KNN-E3806R
16"
4"
None
KNN-E3814
17"
4"
Inside
KNN-E3815
17"
5"
Inside
KNN-E3816
17"
6"
Inside
         

         

Heavy Duty Off Road Round Air Filters

These heavy duty off road racing filters are specially designed for our line of billet air intake assemblies. They are thicker to increase the total surface area and an external mesh for increase strength. Due to the extra thickness, these filters will not fit the standard K&N assemblies.

Click Here browse the intake assemblies that these filters are designed for.

Part Number
Outside Dia. (A)
Height (H)
Wire Mesh
KNN-E3979XD
14"
4"
Outside
KNN-E3978XD
14"
5"
Outside
KNN-E3977XD
16"
4"
Outside
KNN-E3976XD
16"
5"
Outside