K&N Universal Air Filters with Custom Caps

Carbon Fiber Top K&N Air Filters

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  Base            Top           Filter       Flange         
Inside Diameter  Diameter        Diameter      Length       Length        Flange
Inch     mm      Inch     mm     Inch    mm    Inch    mm   Inch    MM    Type          Part #  
3*       76      6        152    5       127   6       152  1       25    Centered **   RP-5044
3        76      6        152    5       127   6       152  1-3/4   44    Centered **   RF-1047
 3-1/2*   89      12x6     305    9-15/16    252   6       152  15/16   24    Centered      RF-1038
                           X        X        X
                          152    3-15/16    100
3-7/8*   98      12x6     305    9-15/16x   252  7       178  15/16   24    Centered **   RP-5103
                           X        X        X
                          152    3-15/16    100
3- 7/8*  98      12x6     305x152  9-15/16x   252x100  6       152  15/16   24    Centered      RP-5070
                           X        X        X
                          152    3-15/16    100
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-5101
6x2*   152x51    12       305    11      279   5-3/4   146  7/8     22    Centered      RF-1050
                  X        X      X       X
                 3-1/2     89    2-1/2    64
6       152      7 1/2    190    4-1/2   115   4       102  1       25    Centered      RP-4600

* - Flange Dimension is outside diameter
** - Filter has molded-in velocity stack
 
 

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   Base         Top           Filter       Flange         
Inside Diameter   Diameter     Diameter      Length       Length        Flange
Inch     mm       Inch    mm   Inch    mm    Inch    mm   Inch    MM    Type        Part #  
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

 
 

Inverted Top Universal Air Filters

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  Base         Top          Filter       Flange         
Inside Diameter  Diameter     Diameter     Length       Length        Flange
Inch     mm      Inch    mm   Inch    mm   Inch    mm   Inch    MM    Type         Part #        
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)

** - Filter has molded-in velocity stack

 

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