Purchased a case from my local Volvo/Mack truck dealer here in Rochester NY. on Aug 24 of this year. Took a while to come in but they got 'em.
Bought a case from Cummins a couple years ago but can't find the Fleetgaurd number in my records. They should be able to cross the numbers. Old NAPA number 1090. The fram were pretty cheap, about $8.00 each after fleet markup.