4 Colors Classic 6 Inch Fuel Filter for Napa 4003 and Wix 24003 Automobile 1 / 2-28 and 5 / 8-24 Alu. Solvent trap only for cars Characteristics: 1.100% high quality 6061-T6 aluminum alloy. 2. A gasket made of 6061-T6 aluminum (not some cheap springs that will weaken after repeated high temperature cycling). 7.6061-T6 aluminum core 60 ° cone filter 7 sets for precision hole drilling. 4. Only for car use