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K&N Engineering

K & N Engineering, Inc., "manufacturer of the world's best air filters", has been the innovative leader in air filter technology since 1963, serving the needs of the automotive, motorcycle, marine , industrial and military markets. Located in Riverside California, K & N also has another manufacturing facility in the United Kingdom.

K & N first developed air filters specifically for the motorcycle racing market. With the success K & N experienced in the motorcycle market, the Company decided to branch out to the automotive Motorsports market. K & N quickly grew to be the world's most widely used performance air filter in both the automotive and motorcycle markets.

Today, K & N equips about 80% of all off-road racing vehicles and wins in every major off-road event in the world, including Pikes Peak, the Baja 500 & 1000 and the grueling Paris to Dakar race. K & N also dominates the world's most prestigious and technical racing association with nine of twelve Formula One Teams using K & N air filters.

To keep on the cutting edge of technology, K & N has its own technical facilities that are devoted to product development and testing. The facilities have in-the-floor-chassis dynamometers, to ensure that all K & N air filters are technically designed for the highest increase in horsepower. Air restriction testing and development has yielded products such as our Generation II Fuel Injection Performance Kits, which lead the industry in horsepower gains!

K & N has capitalized on their superior racing heritage along with its superior air flow, increased dirt filtration, environmental friendliness and exclusive ten year, million mile limited warranty to catapult itself to the front of the performance air filtration industry. K & N has garnered numerous awards from SEMA, including "Manufacturer of the Year, 1994, 1996, 1997, and 2000".

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K&N Engineering - Replacement Air Filter

Part # : PL1005   |  Line: KAN
  • 1 year limited warranty
  • Flange Inside Diameter: 2.5 in (64 mm)
  • Base Outside Diameter: 4.438 in (113 mm)
  • Top Outside Diameter: 4.313 in (110 mm)
  • Length: 4.625 in (117 mm)
  • Top Style: Rubber
  • Flange Length: 0.625 in (16 mm)
  • Flange Angle: 0 degrees
  • Flange Offset: 0 in (0 mm)
  • Base Outside Diameter (In): 4.438 Inch
  • Base Outside Diameter (mm): 113mm
  • Filter Re-Oiling Amount (ml): 18ml
  • Filter Re-Oiling Amount (Oz): 0.63 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Replacement Air Filter

Part # : PL5006   |  Line: KAN
  • 1 year limited warranty
  • Flange Inside Diameter: 2.375 in (60 mm)
  • Base Outside Diameter: 4 in (102 mm)
  • Top Outside Diameter: 3.875 in (98 mm)
  • Length: 5.688 in (144 mm)
  • Top Style: Metal
  • Flange Length: 0.5 in (13 mm)
  • Flange Angle: 0 degrees
  • Flange Offset: 0 in (0 mm)
  • Base Outside Diameter (In): 4 Inch
  • Base Outside Diameter (mm): 102mm
  • CFM Rating: 125
  • Filter Re-Oiling Amount (ml): 21ml
  • Filter Re-Oiling Amount (Oz): 0.71 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : R1380   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 5.5 in (140 mm) x 4.5 in (114 mm) x 4 in (102 mm)
  • Base Outside Diameter (In): 5.500 Inch
  • Base Outside Diameter (mm): 140mm
  • Filter Re-Oiling Amount (ml): 21ml
  • Filter Re-Oiling Amount (Oz): 0.73 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RC4160   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 5.125 in (130 mm) x 3.5 in (89 mm) x 6 in (152 mm)
  • Base Outside Diameter (In): 5.125 Inch
  • Base Outside Diameter (mm): 130mm
  • Filter Re-Oiling Amount (ml): 31ml
  • Filter Re-Oiling Amount (Oz): 1.06 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RC4670   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5.5 in (140 mm) x 4.5 in (114 mm) x 6 in (152 mm)
  • Base Outside Diameter (In): 5.500 Inch
  • Base Outside Diameter (mm): 140mm
  • Filter Re-Oiling Amount (ml): 40ml
  • Filter Re-Oiling Amount (Oz): 1.36 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RC5049   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.48 in (63 mm) x 6.85 in (174 mm) x 5.846 in (148 mm) x 2.559 in (65 mm)
  • Base Outside Diameter (In): 6.844 Inch
  • Base Outside Diameter (mm): 174mm
  • Filter Re-Oiling Amount (ml): 17ml
  • Filter Re-Oiling Amount (Oz): 0.59 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Chrome Air Filter

Part # : RC9420   |  Line: KAN
  • 1 year limited warranty
  • Universal Filter
  • Base Outside Diameter (In): 5.250 Inch
  • Base Outside Diameter (mm): 133mm
  • Filter Re-Oiling Amount (ml): 15ml
  • Filter Re-Oiling Amount (Oz): 0.49 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RC9630   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 4.5 in (114 mm) x 3.5 in (89 mm) x 5 in (127 mm)
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 21ml
  • Filter Re-Oiling Amount (Oz): 0.70 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RC9700   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5.125 in (130 mm) x 3.425 in (87 mm) x 3.75 in (95 mm)
  • Base Outside Diameter (In): 5.125 Inch
  • Base Outside Diameter (mm): 130mm
  • Filter Re-Oiling Amount (ml): 14ml
  • Filter Re-Oiling Amount (Oz): 0.46 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RE0380   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5 in (127 mm) x 5.5 in (140 mm) x 2.75 in (70 mm)
  • Base Outside Diameter (In): 5 Inch
  • Base Outside Diameter (mm): 127mm
  • Filter Re-Oiling Amount (ml): 15ml
  • Filter Re-Oiling Amount (Oz): 0.52 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RU4860   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 6 in (152 mm) x 5 in (127 mm) x 6.5 in (165 mm)
  • Base Outside Diameter (mm): 152mm
  • Filter Re-Oiling Amount (ml): 37ml
  • Filter Re-Oiling Amount (Oz): 1.24 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RU4950   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 6 in (152 mm) x 5 in (127 mm) x 5.5 in (140 mm)
  • Base Outside Diameter (mm): 152mm
  • Filter Re-Oiling Amount (ml): 31ml
  • Filter Re-Oiling Amount (Oz): 1.06 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RU5005   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5.25 in (133 mm) x 2.5 in (64 mm) x 5.75 in (146 mm)
  • Base Outside Diameter (In): 5.250 Inch
  • Base Outside Diameter (mm): 133mm
  • Filter Re-Oiling Amount (ml): 16ml
  • Filter Re-Oiling Amount (Oz): 0.55 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RU5006   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5.25 in (133 mm) x 2.5 in (64 mm) x 5.75 in (146 mm)
  • Base Outside Diameter (In): 5.250 Inch
  • Base Outside Diameter (mm): 133mm
  • Filter Re-Oiling Amount (ml): 16ml
  • Filter Re-Oiling Amount (Oz): 0.55 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RU5174   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 6 in (152 mm) x 5 in (127 mm) x 5 in (127 mm)
  • Base Outside Diameter (mm): 152mm
  • CFM Rating: 134 cfm
  • Filter Re-Oiling Amount (ml): 28ml
  • Filter Re-Oiling Amount (Oz): 0.96 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RX3770   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 6 in (152 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 21ml
  • Filter Re-Oiling Amount (Oz): 0.73 Ounce

For Pricing
& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RX3800   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 4 in (102 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 18ml
  • Filter Re-Oiling Amount (Oz): 0.62 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RX38101   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 6 in (152 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 33ml
  • Filter Re-Oiling Amount (Oz): 1.11 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RX3810XD   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 6 in (152 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 44ml
  • Filter Re-Oiling Amount (Oz): 1.50 Ounce

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& Availability, enter your zip code.

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K&N Engineering - Air Filter

Part # : RX3820-1   |  Line: KAN
  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 4 in (102 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 24ml
  • Filter Re-Oiling Amount (Oz): 0.82 Ounce

For Pricing
& Availability, enter your zip code.

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  • 1 year limited warranty
  • Flange Inside Diameter: 2.5 in (64 mm)
  • Base Outside Diameter: 4.438 in (113 mm)
  • Top Outside Diameter: 4.313 in (110 mm)
  • Length: 4.625 in (117 mm)
  • Top Style: Rubber
  • Flange Length: 0.625 in (16 mm)
  • Flange Angle: 0 degrees
  • Flange Offset: 0 in (0 mm)
  • Base Outside Diameter (In): 4.438 Inch
  • Base Outside Diameter (mm): 113mm
  • Filter Re-Oiling Amount (ml): 18ml
  • Filter Re-Oiling Amount (Oz): 0.63 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : PL1005   |  Line: KAN

  • 1 year limited warranty
  • Flange Inside Diameter: 2.375 in (60 mm)
  • Base Outside Diameter: 4 in (102 mm)
  • Top Outside Diameter: 3.875 in (98 mm)
  • Length: 5.688 in (144 mm)
  • Top Style: Metal
  • Flange Length: 0.5 in (13 mm)
  • Flange Angle: 0 degrees
  • Flange Offset: 0 in (0 mm)
  • Base Outside Diameter (In): 4 Inch
  • Base Outside Diameter (mm): 102mm
  • CFM Rating: 125
  • Filter Re-Oiling Amount (ml): 21ml
  • Filter Re-Oiling Amount (Oz): 0.71 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : PL5006   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 5.5 in (140 mm) x 4.5 in (114 mm) x 4 in (102 mm)
  • Base Outside Diameter (In): 5.500 Inch
  • Base Outside Diameter (mm): 140mm
  • Filter Re-Oiling Amount (ml): 21ml
  • Filter Re-Oiling Amount (Oz): 0.73 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : R1380   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 5.125 in (130 mm) x 3.5 in (89 mm) x 6 in (152 mm)
  • Base Outside Diameter (In): 5.125 Inch
  • Base Outside Diameter (mm): 130mm
  • Filter Re-Oiling Amount (ml): 31ml
  • Filter Re-Oiling Amount (Oz): 1.06 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RC4160   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5.5 in (140 mm) x 4.5 in (114 mm) x 6 in (152 mm)
  • Base Outside Diameter (In): 5.500 Inch
  • Base Outside Diameter (mm): 140mm
  • Filter Re-Oiling Amount (ml): 40ml
  • Filter Re-Oiling Amount (Oz): 1.36 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RC4670   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.48 in (63 mm) x 6.85 in (174 mm) x 5.846 in (148 mm) x 2.559 in (65 mm)
  • Base Outside Diameter (In): 6.844 Inch
  • Base Outside Diameter (mm): 174mm
  • Filter Re-Oiling Amount (ml): 17ml
  • Filter Re-Oiling Amount (Oz): 0.59 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RC5049   |  Line: KAN

  • 1 year limited warranty
  • Universal Filter
  • Base Outside Diameter (In): 5.250 Inch
  • Base Outside Diameter (mm): 133mm
  • Filter Re-Oiling Amount (ml): 15ml
  • Filter Re-Oiling Amount (Oz): 0.49 Ounce

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& Availability, enter your zip code.

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Part # : RC9420   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 4.5 in (114 mm) x 3.5 in (89 mm) x 5 in (127 mm)
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 21ml
  • Filter Re-Oiling Amount (Oz): 0.70 Ounce

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& Availability, enter your zip code.

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Part # : RC9630   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5.125 in (130 mm) x 3.425 in (87 mm) x 3.75 in (95 mm)
  • Base Outside Diameter (In): 5.125 Inch
  • Base Outside Diameter (mm): 130mm
  • Filter Re-Oiling Amount (ml): 14ml
  • Filter Re-Oiling Amount (Oz): 0.46 Ounce

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& Availability, enter your zip code.

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Part # : RC9700   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5 in (127 mm) x 5.5 in (140 mm) x 2.75 in (70 mm)
  • Base Outside Diameter (In): 5 Inch
  • Base Outside Diameter (mm): 127mm
  • Filter Re-Oiling Amount (ml): 15ml
  • Filter Re-Oiling Amount (Oz): 0.52 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RE0380   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 6 in (152 mm) x 5 in (127 mm) x 6.5 in (165 mm)
  • Base Outside Diameter (mm): 152mm
  • Filter Re-Oiling Amount (ml): 37ml
  • Filter Re-Oiling Amount (Oz): 1.24 Ounce

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& Availability, enter your zip code.

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Part # : RU4860   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 6 in (152 mm) x 5 in (127 mm) x 5.5 in (140 mm)
  • Base Outside Diameter (mm): 152mm
  • Filter Re-Oiling Amount (ml): 31ml
  • Filter Re-Oiling Amount (Oz): 1.06 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RU4950   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5.25 in (133 mm) x 2.5 in (64 mm) x 5.75 in (146 mm)
  • Base Outside Diameter (In): 5.250 Inch
  • Base Outside Diameter (mm): 133mm
  • Filter Re-Oiling Amount (ml): 16ml
  • Filter Re-Oiling Amount (Oz): 0.55 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RU5005   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 5.25 in (133 mm) x 2.5 in (64 mm) x 5.75 in (146 mm)
  • Base Outside Diameter (In): 5.250 Inch
  • Base Outside Diameter (mm): 133mm
  • Filter Re-Oiling Amount (ml): 16ml
  • Filter Re-Oiling Amount (Oz): 0.55 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RU5006   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.5 in (64 mm) x 6 in (152 mm) x 5 in (127 mm) x 5 in (127 mm)
  • Base Outside Diameter (mm): 152mm
  • CFM Rating: 134 cfm
  • Filter Re-Oiling Amount (ml): 28ml
  • Filter Re-Oiling Amount (Oz): 0.96 Ounce

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& Availability, enter your zip code.

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Part # : RU5174   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 6 in (152 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 21ml
  • Filter Re-Oiling Amount (Oz): 0.73 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RX3770   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 4 in (102 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 18ml
  • Filter Re-Oiling Amount (Oz): 0.62 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RX3800   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 6 in (152 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 33ml
  • Filter Re-Oiling Amount (Oz): 1.11 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RX38101   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 6 in (152 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 44ml
  • Filter Re-Oiling Amount (Oz): 1.50 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RX3810XD   |  Line: KAN

  • 1 year limited warranty
  • Round Tapered Universal Air Filter
  • 2.438 in (62 mm) x 4.5 in (114 mm) x 4 in (102 mm) x 6.125 in (156 mm)
  • Base Outside Diameter (In): 4.500 Inch
  • Base Outside Diameter (mm): 114mm
  • Filter Re-Oiling Amount (ml): 24ml
  • Filter Re-Oiling Amount (Oz): 0.82 Ounce

For Pricing
& Availability, enter your zip code.

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Part # : RX3820-1   |  Line: KAN

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