Sierra 18-7351. You will have to slightly re-route the hoses, but you were going to replace them anyway, weren’t you? Not 100% sure if it will fit on the lower cylinder because of the outlet hose. If not, you might have to move it to the upper one. If it has the glass filter up there, you don’t need it because there is a filter built into the pump. The inlet hose fitting can be rotated pointing in any direction.