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K&N Air Filters
K&N Filter Air FilterFrom $112.99
- Designed to Increase Horsepower
- Easy to Install Drop-in Design
- Lifetime Reusable Air Filter
- Million Mile Limited Warranty
- Lasts up to 50,000 Miles Between Servicing
- California Residents: WARNING
From $112.99
4.4
4.4
(2193)
K&N Filter X-Stream Air Filter
K&N Filter X-Stream Air FilterFrom $100.99
- K&N gives you the power you've been looking for with the new XStream Air Flow Top. Cleanable and reusable, the XStream Air Flow Top filter delivers outstanding engine protection and comes in a wide range of applications. Sizes include 9, 11, 14 and 16-inch diameters. The 14-inch tops are available in anodized black, red, blue or chrome trim ring.
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K&N Filter Custom Inverted Air Filter
K&N Filter Custom Inverted Air FilterFrom $80.99
- K&N automotive replacement air filters are designed to add horsepower and acceleration to your car or truck by providing up to 50% more air flow to your engine. More air flow can result in crisper throttle response and more torque throughout the engine RPM range. K&N air filters are made up of multiple layers of oiled cotton filter media that not only provide superior air flow but also excellent filtration to ensure long engine life.
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From $80.99
Omix-ADA Weber Air Filters
Omix-Ada Weber Air FilterFrom $34.99
- Weber Air Filter
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From $34.99
K&N Filter Custom Titanium Air Filter
K&N Filter Custom Titanium Air FilterFrom $105.99
- K&N automotive replacement air filters are designed to add horsepower and acceleration to your car or truck by providing up to 50% more air flow to your engine. More air flow can result in crisper throttle response and more torque throughout the engine RPM range. K&N air filters are made up of multiple layers of oiled cotton filter media that not only provide superior air flow but also excellent filtration to ensure long engine life.
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49 Products
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4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
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Omix-ADA Weber Air Filter Element - 17704.05
- Fitment: Direct Fit
- Weber Air Filter Element
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We Pay the Sales Tax - 4th Of July Sale Weekend At 4WP!
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$34.99
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$34.99
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- Fitment: Direct Fit
- Weber Air Filter Element
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K&N Filter Replacement Air Filter - E-2315
- 7-3/16 inchB, 5-5/16 inchT, 3-7/16 inchH
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$42.99
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$42.99
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- 7-3/16 inchB, 5-5/16 inchT, 3-7/16 inchH
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4WP PROTECTION PLAN
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K&N Filter Replacement Air Filter - E-2321
- 5-3/8 inch OD, 3-1/2 inch ID, 2-1/4 inch H
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$53.99
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- 5-3/8 inch OD, 3-1/2 inch ID, 2-1/4 inch H
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K&N Filter Replacement Air Filter - E-2345
- ISUZU DIESEL #8-94334906-0
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$52.99
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- ISUZU DIESEL #8-94334906-0
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K&N Filter Replacement Air Filter - E-2351
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$73.99
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$73.99
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K&N Filter Replacement Air Filter - E-2361
- ROVER 820 2.0-SI 16V, 1991
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$42.99
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- ROVER 820 2.0-SI 16V, 1991
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4WP PROTECTION PLAN
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K&N Filter Replacement Air Filter - E-2430
- 6 inch OD, 4-1/4 inch ID, 3-1/4 inch H
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$62.99
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- 6 inch OD, 4-1/4 inch ID, 3-1/4 inch H
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K&N Filter Replacement Air Filter - E-2447
- ISUZU TROOPER 3.1L I4 DIESEL (NON-US)
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$95.99
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- ISUZU TROOPER 3.1L I4 DIESEL (NON-US)
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4WP PROTECTION PLAN
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K&N Filter Replacement Air Filter - E-2520
- 7 inch OD, 5-3/16 inch ID, 3-3/16 inch H
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$60.99
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- 7 inch OD, 5-3/16 inch ID, 3-3/16 inch H
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K&N Filter Replacement Air Filter - E-2566
- FORD(EUROPE) CAPRI 1970-71
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$67.99
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- FORD(EUROPE) CAPRI 1970-71
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K&N Filter Replacement Air Filter - E-2658
- AUDI A2 1.4L I4 GAS and 1.4L I3 TURBO-DIESEL
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$66.99
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- AUDI A2 1.4L I4 GAS and 1.4L I3 TURBO-DIESEL
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K&N Filter Replacement Air Filter - E-2720
- Universal
- 7-1/2 inch X 9 inch X 2-1/2
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$47.99
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- Universal
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K&N Filter Replacement Air Filter - E-2770
- 10-1/2 inchOD,8-1/2 inchID,1-3/4 inchH
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$68.99
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- 10-1/2 inchOD,8-1/2 inchID,1-3/4 inchH
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K&N Filter Replacement Air Filter - E-2855
- AUSTRALIAN FORD XE, XF, EA, EB
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$87.99
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- AUSTRALIAN FORD XE, XF, EA, EB
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K&N Filter Replacement Air Filter - E-2862
- FIAT PUNTO II 1.9L J-TURBO-DIESEL 105-HP and 1.8L 16V 131-HP
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$97.99
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- FIAT PUNTO II 1.9L J-TURBO-DIESEL 105-HP and 1.8L 16V 131-HP
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K&N Filter Replacement Air Filter - E-2864
- VW POLO 1.4L TURBO-DIESEL (75-HP)
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$95.99
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- VW POLO 1.4L TURBO-DIESEL (75-HP)
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K&N Filter Replacement Air Filter - E-2877
- MITSUBISHI DELICA NON-USA 1996
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$69.99
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- MITSUBISHI DELICA NON-USA 1996
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K&N Filter Replacement Air Filter - E-2960
- FERRARI BOXER,DAYTONA
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$112.99
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- FERRARI BOXER,DAYTONA
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K&N Filter Custom Inverted Air Filter - RR-2801
- Custom Inverted Air Filter
- End Cap
- Centered
- Red
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$84.99
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$84.99
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- Custom Inverted Air Filter
- End Cap
- Centered
- Red
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K&N Filter Custom Inverted Air Filter - RR-2802
- Custom Inverted Air Filter
- End Cap
- Centered
- Blue
- California Residents: WARNING
PROMOTIONS AUTOMATICALLY APPLIED
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Qualifies for Free Shipping on Orders Over $99
$80.99
On Backorder
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EASY RETURNS
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$80.99
On Backorder
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Email me when this product comes in stock
LOW PRICE GUARANTEE
EASY RETURNS
- Custom Inverted Air Filter
- End Cap
- Centered
- Blue
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
SHOP 4WP's HUGE SELECTION
Qualifies for Free Shipping on Orders Over $99
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
An email is sent to .
Enter email address to change your password
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K&N Filter Custom Inverted Air Filter - RR-2803
- Custom Inverted Air Filter
- End Cap
- Centered
- Polished
- California Residents: WARNING
PROMOTIONS AUTOMATICALLY APPLIED
SHOP 4WP's HUGE SELECTION
Qualifies for Free Shipping on Orders Over $99
$84.99
On Backorder
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LOW PRICE GUARANTEE
EASY RETURNS
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LOW PRICE GUARANTEE
EASY RETURNS
$84.99
On Backorder
Contact Us for Availability or Alternatives
Email me when this product comes in stock
LOW PRICE GUARANTEE
EASY RETURNS
- Custom Inverted Air Filter
- End Cap
- Centered
- Polished
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
SHOP 4WP's HUGE SELECTION
Qualifies for Free Shipping on Orders Over $99
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
An email is sent to .
Enter email address to change your password
After you submit your email address, you'll receive an email a link that will let you change your password.
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K&N Filter Custom Titanium Air Filter - RT-4590
- Custom Titanium Air Filter
- End Cap
- Centered
- California Residents: WARNING
PROMOTIONS AUTOMATICALLY APPLIED
SHOP 4WP's HUGE SELECTION
Qualifies for Free Shipping
$105.99
On Backorder
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$105.99
On Backorder
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Email me when this product comes in stock
LOW PRICE GUARANTEE
EASY RETURNS
- Custom Titanium Air Filter
- End Cap
- Centered
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
SHOP 4WP's HUGE SELECTION
Qualifies for Free Shipping
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
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Enter email address to change your password
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K&N Filter X-Stream Air Flow Top Filter - 66-0900R
- X-Stream
- Air Flow Top
- Red
- California Residents: WARNING
PROMOTIONS AUTOMATICALLY APPLIED
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Qualifies for Free Shipping
$100.99
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$100.99
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- X-Stream
- Air Flow Top
- Red
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
SHOP 4WP's HUGE SELECTION
Qualifies for Free Shipping
4WP PROTECTION PLAN
Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!
Sign In Or Create an Account
Reset Password
An email is sent to .
Enter email address to change your password
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K&N Filter Replacement Air Filter - E-4834
- 11 inch OD,8-1/2 inch ID,4-5/16 inch H
- California Residents: WARNING
PROMOTIONS AUTOMATICALLY APPLIED
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Qualifies for Free Shipping on Orders Over $99
$93.99
On Backorder
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$93.99
On Backorder
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EASY RETURNS
- 11 inch OD,8-1/2 inch ID,4-5/16 inch H
- California Residents: WARNING + View More Specs - View Less Specs
PROMOTIONS AUTOMATICALLY APPLIED
SHOP 4WP's HUGE SELECTION
Qualifies for Free Shipping on Orders Over $99
