• We want to ship you the correct cartridge the first time!
  • Almost all return requests are due to Buyer purchasing the wrong cartridge – please confirm that you are purchasing the correct cartridge size/OEM compatibility or ask us BEFORE you buy if additional clarification is needed.
  • Excel Filters builds to an industry standard of 1/16” dimensional tolerance and should fit into the specified OEM filter vessels when such vessels are in good operable condition and cartridge vessel manifolds are not warped or otherwise distorted outside of their original OEM dimensional tolerance.
  • Excel Filters will charge a 15% restocking fee for UNUSED/CLEAN/DRY returns due to incorrect cartridge purchased or for dimensional issues if the cartridge dimensions are within the industry standard of 1/16”.
  • In the event that we shipped you an item that you did not order, we will correct the issue at our expense.


  • To be eligible for a refund you must complete the RMA form below.  Returns will not be accepted without a Return Authorization Number,
  • Once received, our support staff will contact you within 3 business days.  If you have any other questions, please contact us at 888.532.2801 or at

Return Authorization Form