K&N KN-303 Powersports Oil Filter


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Durable Construction for Extreme Conditions

To satisfy the demands of racers, K&N oil filters has many features over and above the requirements of most vehicles. They use thicker canister walls for extra strength and durability which reduces the risk of damage from loose rocks and debris. The durable construction will withstand higher oil pressures found only in racing environments without bursting. The drilled hole on the nut is for a safety wire attachment. This is required for many types of racing, the safety wire prevents blown oil filters from falling on the track and representing a hazard to other race vehicles. This extra engineering offers peace of mind for consumers who want only the best.



K&N Wrench-Off® Oil Filters

K&N Premium Wrench-Off® Oil Filters

We have all been there: Whether it’s remembering where that disappearing oil filter tool is; or having oil leak all over your garage and yourself; or finally giving up and pounding a screwdriver through the filter just to get if off. Most of our canister type automotive and marine oil filters come with a 1” nut welded to the top of the canister so they can be easily wrenched-off with a standard tool. Most K&N canister type motorcycle and ATV oil filters come with a 17 mm nut.


Canister Type Oil Filters

  • Drilled safety wire holes for racing in canister oil filters
  • Most have sturdy 1" (automotive) or 17 mm (motorcycle) wrench nut, where applicable, makes oil filter removal quick and easy
  • Heavy-duty construction
  • Resin-impregnated filter media provides maximum filtering surface for contaminant removal
  • Anti-drainback valve (where applicable) eliminates dry starts, prevents oil from draining back into crankcase during engine shutdown
  • Internally lubricated gasket provides positive seal while allowing easy on and off of filter
  • Rolled threads provide extra protection against stripping
  • Traps 99% of harmful contaminants

High-Flow Rate

K&N oil filters have filtering media that allows for higher flow rates while providing outstanding filtration. High filter flow rates are important in racing vehicles where heavier grade oil is used and the oil is pumped much faster than in a standard vehicle. When the engine is circulating oil at high GPM rates, the high-flow oil filter helps reduce the loss of pressure through the filtering process.


Compatible with the Latest in Synthetic Engine Oils

K&N oil filters are ideal for high-end synthetic motor oil. Synthetic motor oil is said to offer improved flow performance at cold temperatures while providing superior protection against thermal degradation.



K&N Powersports Performance Oil Filter
K&N Part Number: KN-303

Part KN-303 Product Specifications:

  • Part Number: KN-303
  • Product Style: Oil Filters
  • Anti Drain Back Valve: Yes
  • Bypass Valve: Yes
  • Filter Material: High Flow Premium Media
  • Gasket Material: Nitrile Rubber
  • Height: 3.344 in (85 mm)
  • Outside Diameter: 2.688 in (68 mm)
  • PSI Relief Valve: Yes
  • Removal Nut: Yes
  • Style: Canister
  • Thread Specification: M20 x 1.5
  • Removal Nut Size: 17 mm
  • Weight: 0.53 lb (0.24 kg)
  • Product Box Length: 2.81 in (71 mm)
  • Product Box Width: 2.81 in (71 mm)
  • Product Box Height: 3.88 in (98 mm)



Cross Reference Numbers:

Use this cross reference table as a guide only.

  • Honda 15410MM5003
  • Honda 15410MM9003
  • Honda 15410MM9013
  • Honda 15410MM9305
  • Honda 15410MM9405
  • Honda 15410MM9P00
  • Honda 15410MM9P01
  • Honda 15410MM9P03
  • Honda 15410MT7003
  • Honda 15412MT7003
  • Kawasaki 160970004
  • Kawasaki 160971058
  • Kawasaki 160971059
  • Kawasaki 160971061
  • Kawasaki 160971063
  • Kawasaki 160971064
  • Kawasaki 160971066
  • Kawasaki 160971067
  • Polaris 3084963
  • Yamaha 3FV134400000
  • Yamaha 3FV134401000
  • Yamaha 5GH134400000
  • Yamaha 5GH134401000


Vehicle Compatibility

Please click here to view compatible vehicles

Tech Talk

K&N Performance Gold Oil Filters use a cellulose media bound by phenolic resin surrounding a metal inner core that provides structural strength to reduce the risk of filter collapse. The resin is the "glue" that holds the media fibers together and at the same time keeps "pores" open by keeping the fibers apart. The resin is cured to full strength during the element manufacturing process. Phenolic resin systems are an excellent choice for the high temperature demands of oil filters.


K&N filters include an anti-drainback valve, when applicable, that prevents oil from draining back into the crankcase during engine shutdown. The anti-drainback valve is useful in situations where the filter is mounted horizontally which could allow backflow. K&N use rolled threads to help prevent stripping during installation or removal and an internally lubricated gasket provides a positive seal even after the filter has been removed and reinstalled.

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