I emailed Volant and they gave me this part number for 05 Pathfinder. I'm sure its the same for Frontier.
part #12640
also, found another online site to order aFe, if anyone is intersted.
We stock the #54-10492 for 2055 Nissans. Your cost is $219.65 including freight. Let me know if you would like us to get one coming your way. You can reach us at 1-800-292-4777.
Thanks,
Brett Corning
Midstates Inc.
bcorning@midstatesinc.com
I will be odering my aFe Friday and hopefully have it next week,
I will post my reviews soon.