Also, check your hoses coming into and out of the pump. Those can leak also. I know the hose coming out of my pump started leaking at the fitting. It was mind boggling as I tightened the hose at the pump and then right before my eyes I could see the other end of the hose start leaking. I replaced the hose with a steal braided hose. Somehow in changing that out, I managed to mess up the plastic threads where the hoses connects into the city water inlet. I had to replace that fitting. I used brass fittings rather than the plastic. Bottom line, my leak had nothing to do with the pump, even though that is where it started. It was the hose.
2016 Wildwood 195BH
2009 Silverado 1500