Both Wix and Napa have a cross-reference for most LS tractor Filters ,no warranty issues , some are a bit cheaper some are higher priced than OEM , however the Napa/Wix filters are much better quality than Factory..... , I don't have a local Napa , I buy mine from O'rallys wix makes the Napa filters they use the same cross reference, napa drops the 5 (wix oil filter = 57000 Napa oil filter = 7000)