The majority of 1275cc Sprites & Midgets used the cross flow radiator. Initially, these cars had emissions control equipment that required an iron thermostat housing, 12G1445. But because most folks no longer run the emissions gear on these cars as they are exempt from current smog rules, the lighter all aluminum version is a great option - especially for those running aluminum cylinder heads. We've had these great reproductions made ourselves. Fits Sprites and Midgets from 1968-1974; occasionally used on Classic Minis to facilitate different upper hose installations.

Note: this ALUMINUM thermostat housing was originally for cross flow radiator systems outside of the United States that did not have a boss for the smog air pump like U.S.-spec cars. If you have a U.S.-spec car with the emissions control system still intact for originality's sake, use the U.S.-spec CAST IRON housing, U-12G1445.