Sierra 18-8005EP-1 3/8" EPA Primer BulbSierra is a leading supplier of primer bulbs to the marine market, being both EPA and CARB certified.Features: I.D.: 3/8"; Bulb type: large capacity; Uses double check valves with viton balls and stainless steel springs; Utilizes Floroelastomer (FKM) material for traditional look and operation; 7.5" overall length including barbs;