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RG-1001BL Universal Air Filter - Blue, Cotton Gauze, Washable, Universal, Sold individually

You Save : $16.00 (36%)
List Price : $44.99
Manufacturer #RG-1001BL
( Reviews)
Questions, Answers
Universal Fit Add Vehicle


Top - Chrome; With Inverted Filter Top; Centered Flange
Flange Inside Diameter:
4 in.
Recommended Use:
Product Fit:
Round Tapered
Cotton Gauze
10-year or 1 million-mile K&N limited warranty
Anticipated Ship Out Time:
2-3 business days
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

Product Information


When most people think of top-of-the-line performance air filters, K&N comes to mind. That’s probably because in addition to being regarded as the world’s finest filtration company, K&N’s universal performance air filters will last as long as your vehicle’s engine does and are a 100% legal factory replacement that can boost your horsepower output. 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.

  • Replaces existing air filter
  • Boosts cold air flow which translates to more horsepower
  • Universal design/fitment
  • Cotton-gauze design features as many as 6 layers of filtration
  • The world’s best performance air filter
  • Only need to clean every 50,000 miles
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 90 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.

Question and Answer

Does it come with all the parts you need to install?Gregory F.Jan 07, 2021
Best Answer:Hi Gregory, Yes, it comes with the clamp and gaskets.
Arnel E.STAFFJan 07, 2021
Do you spray it with oil after it’s cleaned?Scott J.Aug 17, 2020
Best Answer:Hello Scott, After cleaning this item you need to oil the filter using with recommended K&N air filter oil 99-5050(Squeez oil) or 99-5000(Aerosol oil).
Aldrin P.STAFFAug 17, 2020
Will it fit an existing  K&N cold air system that is 3 and a half inches ?Scott J.Aug 17, 2020
Best Answer:Hello Scott, Yes This includes inserts to fit three different flange diameters to fit existing cold air intake system.
Aldrin P.STAFFAug 17, 2020
Does this have oil on it?Tyler S.Jun 06, 2020
Best Answer:Hi Tyler. Upon checking, this item doesn't have oil on it.
Khristine M.STAFFJun 06, 2020
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