OER Parts offers a wide selection of Fuel Level Sending Units for your 1974 Pontiac Firebird. OER Parts offers 1974 Pontiac Firebird 0-90 Ohm Fuel Sending Unit, 1974 Pontiac Firebird 0-30 Ohm Fuel Sending Unit, 1974 Pontiac Firebird Auto Meter Universal Fuel Tank Sending Unit, 1974 Pontiac Firebird Fuel Tank Sending Unit Float, 1974 Pontiac Firebird Classic Instruments Internal Float Fuel Sending Unit, 1974 Pontiac Firebird OE Fuel Level Sending Units, 1974 Pontiac Firebird Fuel Sender Lock Ring, 1974 Pontiac Firebird Fuel Sender Lock Ring Rubber Gasket, and 1974 Pontiac Firebird Fuel Tank Sending Unit Lock Ring Tool.