ok so im new to havin a cummins. i do know a little about the engine but i dont know what this part is that its leaking coolant from. its a 896bt N/I. and right to the right of the stock down pipe theres a round resivor that sits on a 90 degree plate next to the block it appears to have two inlets and two outlets. its dosnt leak much at an idle but as soon as you step on the gas it pisses out coolant. can anyone tell me what the resivor is and where i can get one.

thanks!