The Ford Racing 90-degree die-cast aluminum thermostat housing is made for 302/351W engines and was used on Fox‑body Mustangs from 1979–1995. It accepts a 1½-inch radiator hose and a ¾-inch bypass hose, and is supplied with a die-cast construction intended to replace corroded or leaking stock housings while fitting the original coolant routing on those engines.
Ford Racing 90 Degree Thermostat Housing