K&N parts matching Beck/Arnley 0421843 air filter

The Beck/Arnley 0421843 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Beck/Arnley air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Diego, San Diego, California
This air filter is amazing. I have some noticable power gains and my gas mileage has improved even more so than the listed 38 mpg highway. Installed in about 15 seconds and it was ready to go. On a recent trip to Las Vegas I was able to drive from my home in San Diego to Vegas and back with a quarter tank of gas still in the tank. I will let you do the math on that one, but it is one of the best purchases that I have made for this vehicle.
Levin Bailey-Donaldson III , Salisbury, Maryland
I notice a small bit of horsepower change but not much. Gas mileage is a little bit better and it has quieted down the engine upon exceleration. I like it.
Amanda, Utah
K&N filters are the best. I drive a 2014 Nissan Altima 4L and my gas mileage went up a full 1.5 mpg after installing this filter. The filter is easy to clean and reuse. The filter I had on my last car, a 2007 Corolla, was still good when I sold the car, after 150,000 miles.
33-2478 K&N 33-2478 Replacement Air Filter
List Price: $87.29
Your Price: $56.99