K&N parts matching Mobil AF4051 air filter

The Mobil AF4051 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Mobil air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Don Booth, Portland, Oregon
This is the 3rd vehicle I have installed a K&N air filter in. Every vehicle has benefitted from an immediate increase in power, not a huge increase, but assuredly noticeable. None of the vehicles however have had increased gas mileage due to the filter and I don't care about that. Give me horsepower! Great product and I've not had any issues with them.
R. Knights, Arizona
My new K&N Air filter has made a difference in my car's response and power. It is worth it. The K&N store was very prompt in the order and correcting a mistaken part sent that didn't fit my car (probably my own fault) They made an order correction easy by sending a prepaid shipping label to return the part.
James Huffman, Russells Point, Ohio
Great filter easy install fast delivery. More acceleration and gained 1.5 miles a gallon. Thanks K&N
33-2430 K&N 33-2430 Replacement Air Filter
List Price: $82.99
Your Price: $53.99