Peterbilt air tank 172.2280. 9.625 inch diameter, 24.0 inch length. Four 1/2 inch NPT main ports, two 1/2 inch and one 1/4 inch NPT end ports and one 1/4 inch NPT drain port. 1574 cubic inch capacity. Replaces Peterbilt numbers 08-02280 and 0802280. For Peterbilt 320, 330, 337, 357,340, 348, 365, 367, 378, 379, 382, 384, 386, 387, 388, 389, 567 and 579 applications.