K&N parts matching Firestone FF645 fuel filter

The Firestone FF645 fuel filter cross references with the K&N fuel filter parts below. K&N offers compatible fuel filters for many Firestone fuel filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Fuel Filter
  • Built for High Flow Rates
  • Outstanding Filtration
LG Núñez, El Mirage, Airzona
I am very proud of my New K&N Filter. It seems as if I am getting better gas mileage. I am going to buy one for my other vehicle now. Thanks K&N.
Christopher Roebuck, Fountain, Colorado
Great product. My fuel pump was being over worked by my old fuel pump. I could stand next to my truck and hear a loud whine. After I took it off and put this K&N fuel filter on, except for the system pressuring itself, you can't hear the pump.
Serge Petit, Paris, France
Je consomme aussi des filtres à huile HP2001 depuis for longtemps . Mais vu les difficultés d'approvisionnement de l'époque et la dépendance aux stocks revendeurs j'en avait acheté un lot important mais dès qu'il sera fini je passerai par le KN Store Pour ce qui est du filtre à air j'ai eu du KN mais le huilage obligatoire après chaque lavage était une une contrainte ; je suis donc passé chez AEM .
PF-2500 K&N PF-2500 Fuel Filter
List Price: $16.39
Your Price: $12.99