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K&N Filters

K&N Universal Air Filters with Custom Caps

K&N Universal Air Filter with Composite Top Composite Top

With advance composite technology, carbon fiber provides the ultimate in strength with minimal weight. Carbon fiber provide 1/3 less weight than conventional filter top construction material. Smooth, glass like finish provides the ultimate in finish, fit, function and performance only available from K&N.

Mounting Flange
Inside Diameter
Base
Diameter
Top
Diameter
Filter
Length
Flange
Length
Flange
Type
Part #
Inch mm Inch mm Inch mm Inch mm Inch mm
3 76 6 152 5 127 6 152 1-3/4 44 Centered RF-1047
3* 76 6 152 5 127 6 152 1-3/4 44 Centered RP-5044
3-1/2* 89 12x6 305 9-15/16 252 6 152 15/16 24 Centered RF-1038
3-7/8* 98 12x6 305 9-15/16x 252 7 178 15/16 24 Centered RP-5103
3-7/8* 98 12x6 305x152 9-15/16x 252x100 6 152 15/16 24 Centered RP-5070
4 102 5-3/8 136 4 102 5-1/2 140 5/8 16 Centered RP-4660
4 102 5-3/8 136 4 102 5-1/16 129 5/8 16 Centered RP-4930
4 102 5-3/8 136 4 102 7 178 5/8 16 Centered RP-4970
4 102 5-3/8 136 4 102 6-1/2 165 5/8 16 Centered RP-4980
4-1/2 114 5-7/8 149 4-1/2 114 6 152 5/8 16 Centered RP-4740
4-1/2 114 5-7/8 149 4 102 6 152 5/8 16 Centered RP-5105
6x2* 152x51 12 305 11 279 5-3/4 146 7/8 22 Centered RF-1050
6 152 7-1/2 190 4-1/2 115 4 102 1 25 Centered RP-4600

K&N Titanium Top Filter Titanium Top

When it comes to exotic race materials, titanium is well known for it’s lightweight and increased strength to weight ratio. Offering lighter weights than conventional filter tops and more rigidity. K&N titanium top filters are the next generation in filter design.

Mounting Flange
Inside Diameter
Base
Diameter
Top
Diameter
Filter
Length
Flange
Length
Flange
Type
Part #
Inch mm Inch mm Inch mm Inch mm Inch mm
6 152 7-1/2 190 4-1/2 114 5 127 1 25 Centered RT-4590
6 152 7-1/2 190 4-1/2 114 4 102 1 25 Centered RT-4600
4-1/2 114 5-7/8 149 4-1/2 114 5 127 5/8 16 Centered RT-4610

K&N Universal Air Filter with Inverted Top Inverted Top

A unique approach to filter design and concept. With a filtering top that actually inverts, dropping into the cylinder of the filter. Surface area is greatly increased providing more filtration and air flow. With three colors options, you can now customize your intake to match the rest of your car.

Mounting Flange
Inside Diameter
Base
Diameter
Top
Diameter
Filter
Length
Flange
Length
Flange
Type
Part #
Inch mm Inch mm Inch mm Inch mm Inch mm
2-3/4 70 5-7/8 149 5-1/4 133 5 127 3/4 19 Centered RR-2801 (Red)
2-3/4 70 5-7/8 149 5-1/4 133 5 127 3/4 19 Centered RR-2802 (Blue)
2-3/4 70 5-7/8 149 5-1/4 133 5 127 3/4 19 Centered RR-2803 (Polished)
3 76 6 152 5-1/4 133 5 127 1-3/4 44 Centered RR-3001 (Red)
3 76 6 152 5-1/4 133 5 127 1-3/4 44 Centered RR-3002 (Blue)
3 76 6 152 5-1/4 133 5 127 1-3/4 44 Centered RR-3003 (Polished)

Not legal for use in California, or other states with similar emissions control regulations. See product applications for specifications regarding emissions standards and CARB regulations.

 
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