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K&N VF2061 Cabin Air Filter CABIN AIR FILTER Photo-0
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K&N VF2057 Cabin Air Filter CABIN AIR FILTER Photo-0
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BMC FB01090 Air Filter Kit for BMW X3M (F97) / X4M (F98) Photo-0
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BMC FB01159 Air Filter for BMW X1 (M35i) 2023+ Photo-0 BMC FB01159 Air Filter for BMW X1 (M35i) 2023+ Photo-1
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BMC FB01089 Replacement Air Filter SUZUKI JIMNY IV 1.5 K15B Photo-0 BMC FB01089 Replacement Air Filter SUZUKI JIMNY IV 1.5 K15B Photo-1
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BMC FBSA00004 Conical filter 101mm (4 inches) Photo-0 BMC FBSA00004 Conical filter 101mm (4 inches) Photo-1
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BMC FB195/01 Air Filter for PORSCHE 911 GT3 / GT3RS (996 / 997) Photo-0 BMC FB195/01 Air Filter for PORSCHE 911 GT3 / GT3RS (996 / 997) Photo-1
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HKS 70017-AZ111 Super Air Filter For Mazda MX-5 Photo-0
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HKS 70017-AT131 Super Air Filter For Toyota GR Supra A90 Photo-0
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HKS 70017-AT104 Super Hybrid Filter For Toyota Mark II 2JZ-GE Photo-0
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HKS 70017-AK103 Super Air Filter Replacement Filter L-Size (3row) Photo-0
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HKS 70001-AK031 Super Power Flow Filter 150mm Red Photo-0
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K&N VF2078 Cabin Air Filter for FORD Bronco 2.3L Photo-0
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K&N 33-3072 Replacement Air Filter for MERCEDES-BENZ AMG C 63 2014-2020 Photo-0
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K&N 33-5067 K&N 33-5067 Replacement Air Filter KIA STINGER GT V6-3.3L F/I, TWIN TURBO (LEFT SIDE); 2 Photo-0
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K&N VF2027 Cabin Air Filter CABIN AIR Filter Photo-0
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K&N 33-5047 Replacement Air Filter CHEVROLET CAMARO V8-6.2L F/I; 2016-2017 Photo-0
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K&N 33-2483 Replacement Air Filter CADILLAC XTS 3.6L-V6; 2013 Photo-0
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K&N 33-2460 Replacement Air Filter DODGE CHALLENGER/CHARGER/300C, 2011 Photo-0
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K&N 33-2493 Replacement Air Filter HYUNDAI SANTA FE 2.0L-L4; 2013 Photo-0
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K&N 33-2456 Replacement Air Filter INFINITI QX56 5.6L V8; 2011-2012 Photo-0
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K&N 33-2990 Replacement Air Filter for BMW 116i 1.6L-L4 2011 Photo-0
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K&N RU-5045 UNIVERSAL Clamp-On Air Filter 4"FLG, 6-3/4"B, 5-7/8"T, 9-1/2"H Photo-0
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K&N 33-2936 Replacement Air Filter MINI COOPER S 1.6L-L4; 2006 (EU), 2007 (US) Photo-0
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K&N 33-2844 Replacement Air Filter CITROEN C3 1.4L-I4 & 1.6L-I4; 2002 Photo-0
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K&N 33-2405 Replacement Air Filter for MERCEDES-Benz CLK63 AMG 6.3L 2008 Photo-0
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K&N 33-2367 Replacement Air Filter for BMW 335I 3.0L-L6 2007-2010 Photo-0
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K&N 33-2359 Replacement Air Filter HONDA FIT 1.5L-L4; 2007-2008 Photo-0
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K&N 33-2332 Replacement Air Filter BMW 325 3.0L-L6 E90 & 330 E90 3.0L-L6; 2006 Photo-0
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K&N 33-2306 Replacement Air Filter for TOYOTA Tacoma 2.7 2005- Photo-0
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K&N 33-2164 Replacement Air Filter MITS MONTERO 01-07, PAJERO 00-10 Photo-0
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K&N RU-5111 Clamp-On Air Filter (Flange Inside Diameter 76 mm) Universal Photo-0

Upgrade Your Engine's Breathing: A Guide to Air Filters

A performance air filter is often the first and most effective upgrade for any engine. By allowing more air to enter the engine with less restriction, it can increase horsepower, torque, and throttle response. However, not all filters are created equal. Use our "Product type" filter and this guide to find the perfect solution for your vehicle.

Step 1: Choose Your Filter Type

The right choice depends on your performance goals and budget. We've categorized our products to simplify your decision:

  • Panel Filters (Drop-in): The easiest upgrade. These filters fit directly into your car's original airbox, replacing the restrictive paper filter. They are washable, reusable, and provide a noticeable performance gain for street cars.
  • Intake Systems (CAI): For maximum power gains. These kits replace the entire factory airbox and piping with a high-flow filter and smooth, larger-diameter tubing, drawing cooler, denser air from outside the engine bay. This is the choice for serious enthusiasts.
  • Universal & Clamp-on Filters: For custom turbo projects or unique applications where a direct-fit system is not available.
  • Service & Cleaning Kits: Essential for maintaining your washable filter. Use these kits to clean and re-oil your filter, ensuring it lasts a lifetime.

Step 2: Oiled vs. Dry — The Great Debate

This is a key consideration based on performance and maintenance preferences.

Characteristic Oiled Filters (e.g., K&N, BMC) Dry Filters (e.g., AEM)
Filtration Oil layer traps fine particles Multi-layer synthetic media
Airflow Highest potential airflow Excellent airflow, slightly less than oiled
Maintenance Requires washing and re-oiling Requires washing (no oil needed)
Best For Maximum performance, racing applications Easy maintenance, sensitive MAF sensors