K&N Products
K&N Engineering is the world's leading manufacturer of washable performance air filters and air intake systems. STM carries drop-in replacement panel air filters, breather filters, aftermarket air filters, oil filters, full intake kits, filter cleaners and more. If you don't see it on our website, feel free to contact us and we can get it for you.

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K&N Performance Gold Wrench-Off Oil Filter $12.00
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K&N 5/16" Valve Cover Breather Filter (62-2470) $21.50
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4 Inch Inlet K&N Universal Cone Air Filters from $35.99
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K&N Performance Silver Oil Filters from $8.89
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K&N Filter Recharger Service Kit $13.00
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3 Inch Inlet K&N Universal Cone Air Filters from $35.99
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6 Inch Inlet K&N Universal Cone Air Filters from $47.99
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4.5 Inch Inlet K&N Universal Cone Air Filter RU-4260 $48.99
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3.5 Inch Inlet K&N Universal Cone Air Filters from $34.99
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K&N Air Filter Kit with MAS Adapter for 2G DSM (57-5504-1) $178.99
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K&N factory replacement drop-in air filter- Evo X $53.99
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K&N Factory Replacement Air Filter- 1G DSM $66.99
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K&N Drop-In Replacement Air Filter - Evo 8/9 $82.99
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K&N Drop In Air Filter for 2017+ Audi RS3 (33-3036) $56.99
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K&N BWM M3/M4/M5/M6 Replacement Air Filter $89.99
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K&N Crankcase Breather Filters - Steel Base from $18.47
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K&N Carbon Fiber Air Filters for 14+ Audi R8 and Huracan (E-0658) $257.99
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K&N Universal 5" Air Filter (RU-2800) $50.99
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K&N Drop-In Factory Replacement Air Filter - 3000GT/Stealth $54.99
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K&N Evo X 69 Series Typhoon Air Intake System $413.99
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K&N Air Filters for McLaren 600LT (E-0667) $118.99
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K&N Factory Replacement Air Filter- 02-07 WRX/STi $53.99
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3.156 Inch Inlet K&N Universal Cone Air Filter RC-9110 $61.99
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K&N Drop-In Panel Air Filter for 2020 Supra (33-3136) $56.09
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K&N Air Filters for 09-15 R8 / 09-14 Gallardo (E-0669) $291.99
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K&N Factory Replacement Air Filter- 2G DSM $55.99
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K&N Drop-In Replacement Air Filters (Nissan R35 GTR) $92.99
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K&N Cabin Filter Cleaning Care Kit $13.00
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K&N Air Filter Velocity Stack Flange (21512-1) $25.99
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K&N Kawasaki Filter (33-2307) *Closeout* $45.99
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K&N Replacement Air Filter for 2G DSM (RF-1019) $59.99
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K&N Universal 5" Air Filter with Carbon Fiber Top (RP-5113) $73.99
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K&N Oil Filter for the Audi RS3 $6.50
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K&N Factory Replacement Air Filter- 08-18 WRX/STi $50.99
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K&N DODGE VIPER REPLACEMENT AIR FILTER- 2008-2016 $63.99
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K&N Replacement Air Filter (Ford Focus RS) $59.99
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K&N Performance Silver Oil Filter - 2017+ EcoBoost Raptor $7.99
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K&N Performance Gold Oil Filter - 2017+ EcoBoost Raptor $15.99
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K&N In Cabin Air Filter - 2017+ EcoBoost Raptor $44.99
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K&N Air Intake - 17+ EcoBoost Raptor $289.99
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K&N Panel Filter - 17+ EcoBoost Raptor $49.99
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In Cabin Filter K&N - 2017+ Audi RS3 $40.99
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K&N Pro Series Oil Filter $12.99