08-01-2015, 12:11 AM
(08-01-2015, 12:06 AM)The ferret_imp Wrote: It may just be that Napa needs their own number for their inventory system. It appears to be their own label. I'd venture to say if you could peel back the lower left hand corner of the Napa label, you'd find the K&N part number.
No doubt, but the noticeable difference is the shape of the metal face plate. One is flat, while the other has several bends and radiuses.
