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Select your vehicle
Vehicle Info Required to Guarantee FitAdd Vehicle

K&N®
RX-4990 Universal Air Filter - Red, Cotton Gauze, Washable, Direct Fit, Sold individually

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$119.99
Manufacturer #RX-4990
Vehicle Info Required to Guarantee FitAdd Vehicle
Qty:
1

Highlights

Brand:
Notes:
Top - X-Stream; 1/4-20 Jack Nut In Filter Top; Centered Flange; Filter Re-Oiling Amount - 0.96 oz (28 ml)
Flange Inside Diameter:
3 in.
Recommended Use:
Performance
Product Fit:
Direct Fit
Type:
Washable
Shape:
Round Tapered
Material:
Cotton Gauze
Color Finish:
Red
Recommended Product:
Air Filter Wrap - K33RX4990DL [Blue], K33RX4990DR [Red], K33RX4990DY [Yellow], K33RX4990DK [Black]
Warranty:
10-year or 1 million-mile K&N limited warranty
Quantity Sold:
Sold individually
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
2005 Ford Focus
ZX3
4 Cyl 2.0L
-
2005 Ford Focus
ZX4
4 Cyl 2.0L
-
2005 Ford Focus
ZX4 ST
4 Cyl 2.3L
-
2005 Ford Focus
ZX5
4 Cyl 2.0L
-
2005 Ford Focus
ZXW
4 Cyl 2.0L
-

Product Information

K&N UNIVERSAL X-STREAM CLAMP-ON AIR FILTER

K&N Universal Clamp-on Air Filters are manufactured for a wide variety of applications and unique filtration needs. K&N performance High-Flow Air Filters are engineered to improve engine performance by increasing airflow up to 50%. Unlike disposable paper filters which must be frequently replaced, K&N Air Filters are washable, reusable, and engineered to last for the life of your vehicle. These versatile filters are constructed with ultra-strong molded pliable rubber flanges that absorb vibration and allow for secure attachment. Available in round, tapered (cone-style), and oval designs, K&N offers thousands of clamp-on filters in a multitude of shapes and sizes that cater to many precise applications. Join the millions of customers who have saved money and improved vehicle performance by upgrading to K&N filtration.

  • Engineered power: State-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration; clogged or dirty air filters can reduce your vehicle’s acceleration by up to 10%
  • Easy installation: Pre-oiled and ready to drop into your factory air box; one of the easiest and most cost-effective upgrades for your vehicle for quick performance gains.
  • Saves money: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters
  • Eco-friendly: Using a washable, reusable product helps reduce replacement waste; K&N filter will last longer than 10 disposable filters
  • World class protection: Pushing the limits of engine protection by protecting your engine from harmful contaminants
  • Low-maintenance design: 50,000 miles before your first cleaning under normal highway driving conditions
  • High quality: Made in America
  • Race tested: The Official Air Filter of NASCAR; trusted on the racetrack—made for your vehicle

Started in 1969, K&N has garnered a reputation for engineering the world’s finest filtration products for cars, trucks, SUVs, motorcycles, race vehicles, commercial vehicles and anything in-between.

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Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

0
I drive a 2005 Focus ZX3 SES (2.0 Duratec). How does this install? Does it bypass or replace the "lifetime" filter in the arch? If replace, does it worry about splashing water?Stanly S.Nov 13, 2022
Best Answer:Hi Stanly, I'm glad to assist you. This is a cold air intake filter. It is used for cold air intake part number 57-2559. We do not have a factory OEM similar air intake filter in our inventory.
Jeonino E.STAFFNov 13, 2022