Air Filters - Drop In

K&N Custom Air Filter - Oval - 11.5in O/S L x 8.125in O/S W x 2in H - E-3505

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N 06-09 BMW 135/335/535 Replacement Drop In Air Filter - E-3495

The K&N replacement air filter for RK Series air cleaner assemblies is designed to increase horsepower and acceleration while providing excellent filtration. The air filter is washable and reusable and designed to be used as a replacement air filter for...

K&N Oval Air Filter - 8-7/8in L 5-1/4in W 6in H - E-3491

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Oval Drop In Air Filter - 8.785in x 5.25in / 4.5in H - E-3471

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Oval Air Filter - 8-7/8in L 5-1/4in W 3-1/4in H - E-3461

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Oval Air Filter - 8-7/8in L 5-1/4in W 2in H - E-3442

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter 7in OD X 5 1/2in ID x 2in H - E-3402

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Round Air Filter 7in OD 5.188in ID 3 Height - E-3380

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter - Round 6.25in OD 5.25in ID 4in H - E-3344

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter 7 inch X 4 1/2 inch / 3 1/4 inch Height / OVAL - E-3341

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter - Round 6.25in OD 5.25in ID 3.25in H - E-3340

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter Round 5.25 inch ID 6.25 inch OD 2.5 inch Height - E-3322

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Filter Oval Length 6.125in I/S /7in O/S x Width 3.625in I/S/ 4.5in O/S x Height 1.75in - E-3321

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter Round 5-7/8in OD x 4-7/8in ID x 1.4/5in H - E-3212

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter Round 5-3/8in OD x 4in ID x 2in H - E-3200

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter Round 4.5in ID / 5.875in OD / 1.75in Height - E-3180

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter Round 2.875in ID x 3.875in OD x 2in Height - E-3120

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter Cotton Guaze 13inOD x 11-1/4inID x 6inH - E-3036

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N 05-06 Toyota Tundra / Sequoia V8-4.7L Replacement Drop In Air Filter (For P/N 57-9027) - E-3034

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...

K&N Custom Air Filter Cotton Guaze 14inOD x 12 1/4inID x 2inH - E-3032R

This K&N racing air filter is made with 2 layers of cotton and does not come oiled. It was designed to provide even lower air restriction than our replacement air filters for street vehicles. K&N racing air filters are washable and reusable and come with...

K&N Custom Air Filter Round 12.25 inch ID 14 inch OD 3.5 inch Height - E-3029R

This K&N racing air filter is made with 2 layers of cotton and does not come oiled. It was designed to provide even lower air restriction than our replacement air filters for street vehicles. K&N racing air filters are washable and reusable and come with...

K&N Custom Air Filter Round 12.25 inch ID x 14 inch OD x 3 inch Height - E-3027R

This K&N racing air filter is made with 2 layers of cotton and does not come oiled. It was designed to provide even lower air restriction than our replacement air filters for street vehicles. K&N racing air filters are washable and reusable and come with...

K&N Custom Air Filter 6-5/8in OD-B, 5-1/4in ID-B, 5-1/8in T 6in H - E-3020

K&N manufactures two replacement air filters designed for use on the Pro-M mass airflow sensor. These filters have studs in the mounting flange that match the pattern of the sensor. The two filters differ in that the E-3020 height is 5-1/2 inches and the...

K&N Custom Air Filter Round 1.063in ID x 2in OD x 1.063in Height - E-3009

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and...