1.770" in diameter, 304 Stainless Steel high wall cup with 112 degree formed cone. These are superior to any aluminum style cup. Perfect fit into a Napa 4003 Custom Billet Style housing. Each cup is .850" long and slightly nest into one another for a perfect seal. These are strong, lightweight (1.36 ounces each) and corrosion resistant.


Please note that there are many suppliers for the Billet Style NAPA 4003 filter. Tolerances vary quite a bit for those housings. Please measure carefully before ordering.


Stack of 10 cups will measure in around 8.2".

1.770 Stainless Steel Deep Cup Freeze Plug

Deep Freeze Plug Options