WalMart has such a huge amount of buying power that they can tell manufacturers how they want products made. I know that the tires they sell are not the same tires you can buy elsewhere. They are cheaper runs of similar tires available in their manufactirers vendors elsewhere. You cannot get the "WalMart" versions anywhere else. For example, the Good Wrangler tire you get from WalMart is not the same Goodyear Wrangler tire you get from a Goodyear store, or a bonafide Goodyear dealer. I don't know if that holds true to oil filters and other items or not, but I hold it suspect.