I.D.: 1/4" or 6.4mm

Sierra is a leading supplier of primer bulbs to the marine aftermarket

Our bulbs are molded in house

We use double check valves with viton balls and stainless steel springs

Both EPA/CARB certified

Utilizes Floroelastomer (FKM) material for traditional look and operation

7 1/2" or 190.5mm overall length including barbs

Meets current EPA regulations in effect 1/1/2011 of 15 g/m2/24 hrs