I want to put a water pressure gauge in but i'm not sure where to put the tap to measure the pressure so what do you guy think is the best location? My boat has a through hull raw water pump as well as the engine circulating pump. Thanks for any suggestions, Eric.

Install a fitting in the block drain hole.

Or the intake.

take airpackers advice

My past three have been on the t-stat housing

Mine was in the block drain hole, when I had an engine.

Mine is in the block drain hole also.

both of mine are in the drain holes.

ok, ever get clogged with dirt???

Never clogged but have seen a couple pieces of debris in the clear polyflo tubing I used.