1973 Fiat 128 Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

15 Coolant / Antifreeze parts are listed for the 1973 Fiat 128, from PEAK, PRESTONE, FVP and 1 other brand. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 1973 128.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PRESTONE, PEAK and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 6 options from PEAK, FVP and PRESTONE — built to original-equipment specification. FVP GREEN5050GAL is listed in this group.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

One part is listed for the 1973 Fiat 128 — CONTINENTAL 60425.

This table covers the adapters used to pressure-test this cooling system. Read more

3 Cooling System Tester Adapter parts are listed for the 1973 Fiat 128, from ACDELCO, GATES and MOTORAD. All of them fit every engine offered in the 1973 128.

This group includes ACDELCO 12A01, GATES 31413 and MOTORAD 3003.

This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

7 Radiator Cap parts are listed for the 1973 Fiat 128, from GATES, MOTORAD, SKP and 1 other brand. GATES 31527 carries the "Popular" badge. All of them fit every engine offered in the 1973 128.

The Locking Replacement section lists 3 options from GATES, MOTORAD and SKP — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. GATES 31511 is listed in this group.

The Standard Replacement section: 4 options from GATES, MOTORAD, CALORSTAT and 1 other brand. GATES 31527 is listed in this group.

This group includes GATES 31527, GATES 31511 and MOTORAD ST13 and the remaining parts above.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

11 Radiator Hose parts for the 1973 Fiat 128 come from 4 brands — GATES, DAYCO, ACDELCO and 1 other brand. The "Popular" part is DAYCO 81041. 8 parts fit every engine; the other 3 are engine-specific.

The Economy section: 6 options from DAYCO, GATES, ACDELCO and 1 other brand. DAYCO 81041 is listed in this group.

Standard Replacement: 5 parts, from GATES, ACDELCO and DAYCO. A representative part number is GATES 20137.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

4 Temperature Sender / Sensor parts are listed for the 1973 Fiat 128, from ULTRA-POWER, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand. All of them fit every engine offered in the 1973 128.

Economy: 1 part, from ULTRA-POWER. A representative part number is ULTRA-POWER 1T1112.

The Standard Replacement section: 3 options from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS. ROSTRA 680098 is listed in this group.

Listed part numbers: ULTRA-POWER 1T1112, ROSTRA 680098 and STANDARD MOTOR PRODUCTS TS109, plus the other parts above.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

17 Thermostat parts for the 1973 Fiat 128 come from 5 brands — MOTORAD, BECK/ARNLEY, CALORSTAT and 2 other brands. The "Popular" part is MOTORAD 2034180. Every part fits both the 1.1L L4 and the 1.3L L4.

The Economy section: 1 option from DORMAN. DORMAN 9025952 is listed in this group.

The Performance section lists 2 options from MOTORAD — engineered beyond original-equipment specification. MOTORAD 2034180 is listed in this group.

Premium: 2 parts, from MOTORAD. A representative part number is MOTORAD 7234180.

Standard Replacement: 12 parts, from MOTORAD, BECK/ARNLEY, CALORSTAT and 1 other brand. A representative part number is MOTORAD 234192.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

3 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 1973 Fiat 128, from GATES and MOTORAD. All of them fit every engine offered in the 1973 128.

This group includes GATES 34030, GATES 33635 and MOTORAD MG30.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

4 Water Pump parts for the 1973 Fiat 128 come from 4 brands — BECK/ARNLEY, FVP, US MOTOR WORKS and 1 other brand. Every part fits both the 1.1L L4 and the 1.3L L4.

The Economy section: 3 options from BECK/ARNLEY, FVP and US MOTOR WORKS. BECK/ARNLEY 1312347 is listed in this group.

Standard Replacement: 1 part, from GMB. A representative part number is GMB 1231010.

Part numbers include BECK/ARNLEY 1312347 and FVP US9084, among others listed above.