This category is dedicated to after market Wix / Napa tubes that are sold on Amazon and Ebay that are not true replacement tubes for genuine Wix / Napa filter tubes. Many of the Tube kits sold out there are not true replacement Wix / Napa filter tubes and our original filter element retainers will not fit them so we have added some new filter retainers that will fit these tubes. These filter retainers are listed by size so you will need to know the inside diameter and length of the tube you purchased in order to order the proper retainers for it.
You will need to measure your tube without the caps on it then subtract the length of threads of both the caps that screw into your tube; that will give you the retainer stack length. That stack length and the inside diameter measurement of your tube will be the dimensions you need in order to buy the correct kit for your tube.
Please measure your tube and caps as closely as possible.
All prices are in USD