1.745" in diameter, 304 Stainless Steel high wall cup with 112 degree formed cone. These are superior to any aluminum style cup. Perfect fit into the billet style NAPA 4003 housing sold on Ebay. Each cup is .850" long and slightly nest into one another for a perfect seal. These are strong, lightweight (1.22 ounces each) and corrosion resistant.
Please note, these are for the custom black anodized aluminum tubes sold under the product description "Billet Style NAPA 4003 Filter" on EBay and on my Website Made in the USA with an inside diameter of 1.750". For the standard NAPA 4003 filter or Wix 24003, you will need the 1.800" cups.
Stack of 9 cups will measure in around 7.05".
Stack of 10 cups will measure in around 7.85".
Deep Freeze Plug Options