Is there a difference in a Marine starter solenoid and a regular truck solenoid? I took my old one down to O'Reilly's and they had one that would work for 15 bucks. Any thoughts? Suggestions?

The marine solenoid has a flame arrestor so it will not kill you if there are vapors above the Lower Explosive Limit in your bilge. The automotive solenoid will serve as an ignition source for you potential death.

Good point! The guy at the desk and I were looking in a catalog that had marine parts in it and the one we found that matched was in that section. He had to order it, but I'll double check it when it comes in today.