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Replacement Filters > Replacement Industrial Air Filter

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E-4790
 
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The K&N E-4790 replacement air filter is designed to increase horsepower and acceleration by reducing restriction and increasing air flow to your engine. The E-4790 is made with layers of woven cotton that offer outstanding filtration and can be washed and reused repeatedly. K&N replacement air filters can go up to 50,000 miles before cleaning is required, depending on driving conditions. The E-4790 is easy to install and is custom designed to fit right into the factory air box of select older Ford models and IMPCO industrial engines, as well as other applications.

[More Information on Replacement Air Filters]
  • Designed to increase horsepower and acceleration
  • Works with factory vehicle electronics
  • High air flow with excellent filtration
  • Washable and reusable air filter
  • Easy to install
Available Information
E-4790 Cross Reference
E-4790 Vehicle Applications


Part E-4790 Product Specifications
Product Style: Round Air Filter
Height: 2.75 in (70 mm)
Inner Wire: No
Inside Diameter: 7.375 in (187 mm)
Outside Diameter: 10 in (254 mm)
Top Style: Open
Top Material/Finish: None
Air Filter Shape: Round
Filter Material: Cotton Gauze
Flanges: None
Package Contents: 1 Air Filter
Package Quantity: 1
Filter Re-Oiling Amount: 1.55 oz (46 ml)
Weight: 1.7 lb (0.8 kg)
Product Box Length: 10.19 in (259 mm)
Product Box Width: 3.94 in (100 mm)
Product Box Height: 10.31 in (262 mm)



Customer Feedback      Be the first to review part E-4790

I have always used these filters but recently rebuilt my Ford Capri 3.0 ghia and took the oval filter off to put a paper hotrod style filter on, it looked the part but I wanted a K&N so came to this site (KNFilters.co.uk) and took just 5mins to order an insert and it got there the next day, I wish every part I've ordered online was this quick and easy.
Newt, S. Wales, United Kingdom
Just installed a drop-in filter in my 2003 Sierra 2500HD 3/4Ton 6.6 Turbo Diesel. Was getting about 19.1 MPG with a new paper filter. With K & N getting 22.6 under the same conditions. GM Diesel's tend to do better than the competition. But, needless to say I am impressed. And all the BS about the filter's causing problems with the truck's electronics seems to be just that, BS! Wish I hadn't listened to that service advisor who liked selling me filters for so long. And, the sad part about the deal, is that it took a Ford Guy to finally sell me on the K & N. :-)

In conclusion, I'm sold on K & N for life.
James Harrell, East Jesse, Oklahoma
I have two K&N air filters for my 1985 Honda 200x 3 wheeler; one that fits in the stock air box and another that, when I am feeling like going a little faster or need to keep up more, clamps directly to my carburetor and also a 14" by 3" air filter on my 1979 Ford F-150. And I love them. I will not run anything else. I don't trust anything else especially with all the money I have invested in each motor. I can definitely tell the difference it makes in the performance. I had my 3 wheeler clocked in at 67 mph with a "BRAND NAME REMOVED" air filter and then put the K&N that goes in my air box and it clocked at 69. I like them so much I talked my dad into buying the FIPK for his 1998 GMC Sierra and it definitely helped and was extremely easy to install. The exhaust tone was deeper instantly and it had noticeable throttle response. I found out when I bought my dad's Kawasaki Mojave 250 from him. It had a "BRAND NAME REMOVED" air filter on it, and I do not like them anyway. Just thinking about whatever is going through that foam is going into my engine, so I replaced it with a clamp on K&N that next day. Well, as long as you continue making high quality, high performance air filters I will continue to buy them.
Brandon Wood, Escalon, California