Anytime you can replace factory plastic parts with American made billet, you'll have peace of mind knowing the stock part won't ever crack and leave you stranded, and this filter cap kit from Beans is no different. This cap kit includes the upper fuel filter and oil filter caps that feature the exact same footprint as the stock caps for a straightforward, leak-free installation that can still utilize factory or Racor filters. All caps are tapped with 1/8" NPT for use with an oil pressure gauge, oil temperature sending unit, or fuel pressure gauge. Filter caps do not include o-rings as those are included with filter packs.