1973-79 Pontiac, GTO, Firebird (All Models) V8 Aluminum Intake Thermostat Housing with part # 489869. This has the correct 17 Degree Angle. 1973-79 Pontiac GTO, Firebird (all Models) V8 intake thermostate housing. Used to connect the radiator hose to the intake and to hole the thermostate in place. This is factory correct for 1973-81 but will also fit the earlier cars but the 73-81 is a different angle but very similar. This is an exact inline tube reproduction - it is the correct size shape and has the original part number on the part - it is impossible to tell from an original. The finish is smooth and sand cast and with current manufacturing processes is better than the originals.