🔧 Dorman Heater Fittings 56356 - Get Expert Help! Review

Matches perfectly with my 1985 Perkins 4.108 for the hot water circuit on my sailboat. The old one is almost rusted. Prime it and paint it with high temp engine paint and it will outlast you.

. but it doesn't flow very well. The device is made of cad plated steel and is estimated to withstand 800psi. It's a very tough job and can handle pressures well in excess of anything you'll find in a car's cooling system. This adapter reduces the nominal hose ID from 5/8" to 3/8".

Used this to screw into the top of my Moroso reservoir and it worked great. Basically you get what you see in the picture and everything fits as expected; The threads are perfect and the rib on the end of the fitting is perfect for the hose and clamps I used. Definitely recommend!