Sinister Diesel Anodized Thermostat Housing 99.5-03 Ford 7.3L Powerstroke

The factory t-stat housing on your 7.3L has been known to both crack as well as not properly seal upon reinstallation after replacing the thermostat. This direct replacement from Sinister is built from billet aluminum, featuring a cool anodized blue finish, meaning it is a great upgrade for a failed stock housing.