Dual Function Reservoir Check Valve
The check valves are glued into the reservoir body and should not be removed. If the supply check valve O-ring slips off, the valve's spring will pull it into the reservoir body.
To permanently eliminate the reservoir, use
these Dorman fuel tubes.
A reservoir marked "DO NOT REMOVE CUP" does not contain a filter. For a replacement O-ring for the cup, buy a NAPA 3268, Fram CG3862, or equivalent filter.