This page lists 71 cooling system parts for the 1974 Fiat 124, across 8 part types, covering both the 1.6L L4 and the 1.8L L4. Every part shows its brand, manufacturer part number and fitment notes.
On the 1974 Fiat 124, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. Most of the listed parts are Thermostat (23 parts), Coolant / Antifreeze (15 parts) and Radiator Hose (14 parts). The other 5 part types cover the remaining 19 parts.
The 1974 Fiat 124 was sold with both the 1.6L L4 and the 1.8L L4. 57 parts fit every engine; the other 14 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1974 Fiat 124 cooling system parts are MOTORAD (22 parts), GATES (15 parts) and PEAK (7 parts), plus 12 more brands. Quality grades include Standard Replacement, Economy and Premium.
14 parts on this 1974 Fiat 124 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and GATES 31527 (Radiator Cap). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 1974 124 engines | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: all 1974 124 engines | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PRESTONE Popular Fits: all 1974 124 engines | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK Fits: all 1974 124 engines | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE Fits: all 1974 124 engines | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 1974 124 engines | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 1974 124 engines | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 1974 124 engines | PXA1GAL | 🇺🇸 US 🇨🇦 CA | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: all 1974 124 engines | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: all 1974 124 engines | GREEN5050GAL | 🇺🇸 US 🇨🇦 CA | Low Silicate Blend1 Gallon | View on Amazon |
| PEAK Fits: all 1974 124 engines | BMA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1974 124 engines | RUA1GAL | 🇺🇸 US 🇨🇦 CA | Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1974 124 engines | FFA1GAL | 🇺🇸 US 🇨🇦 CA | Full Force Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1974 124 engines | SEP1GAL | 🇺🇸 US 🇨🇦 CA | Sierra Conventional Green Concentrate Low Toxic Option1 Gallon | View on Amazon |
| PRESTONE Fits: all 1974 124 engines | AF3300 | 🇺🇸 US 🇨🇦 CA | Prime Conventional Green 1 Gallon | View on Amazon |
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.
15 Coolant / Antifreeze parts for the 1974 Fiat 124 come from 4 brands — PEAK, PRESTONE, FVP and 1 other brand. The "Popular" part is FVP MV5050GAL. Every part fits both the 1.6L L4 and the 1.8L L4.
In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.
The Economy section lists 4 options from FVP, PRESTONE, PEAK and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.
In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, PEAK, FVP and PRESTONE supply 6 parts: built to original-equipment specification. A representative part number is FVP GREEN5050GAL.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 1974 124 engines | 12A01 | 🇺🇸 US 🇨🇦 CA | ProfessionalIncluded In Tester | View on Amazon |
| GATES Fits: all 1974 124 engines | 31413 | 🇺🇸 US 🇨🇦 CA | Cooling System PressureRadiator Cap | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 3003 | 🇺🇸 US 🇨🇦 CA | StandardIncluded In Tester Kit | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
3 Cooling System Tester Adapter parts for the 1974 Fiat 124 come from 3 brands — ACDELCO, GATES and MOTORAD. Every part fits both the 1.6L L4 and the 1.8L L4.
This group includes ACDELCO 12A01, GATES 31413 and MOTORAD 3003.
Radiator Cap
Locking Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: all 1974 124 engines | 31511 | 🇺🇸 US 🇨🇦 CA | Safety Release Radiator Cap | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | ST13 | 🇺🇸 US 🇨🇦 CA | Safety Lever | View on Amazon |
| SKP Fits: all 1974 124 engines | SKST13 | 🇺🇸 US 🇨🇦 CA | Relief Pressure 13 lbs | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: all 1974 124 engines | 31527 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD Popular Fits: all 1974 124 engines | T13 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| CALORSTAT Fits: all 1974 124 engines | RC0052 | 🇺🇸 US 🇨🇦 CA | Includes 2 sealsMetallic | View on Amazon |
| SKP Fits: all 1974 124 engines | SK10229 | 🇺🇸 US 🇨🇦 CA | Pressure Rating 13 psi | View on Amazon |
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.
7 Radiator Cap parts for the 1974 Fiat 124 come from 4 brands — GATES, MOTORAD, SKP and 1 other brand. The "Popular" part is GATES 31527. Every part fits both the 1.6L L4 and the 1.8L L4.
In the Locking Replacement grade, GATES, MOTORAD and SKP supply 3 parts: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is GATES 31511.
Standard Replacement: 4 parts, from GATES, MOTORAD, CALORSTAT and 1 other brand. A representative part number is GATES 31527.
Part numbers include GATES 31527, GATES 31511 and MOTORAD ST13, among others listed above.
Radiator Hose
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: all 1974 124 engines | 25252 | 🇺🇸 US 🇨🇦 CA | Flexible | View on Amazon |
| ACDELCO Fits: 1.8L L4 | 31612 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
| DAYCO Fits: 1.8L L4 | 81031 | 🇺🇸 US 🇨🇦 CA | Flex Radiator Hose | View on Amazon |
| GATES Fits: 1.6L L4 | 25251 | 🇺🇸 US 🇨🇦 CA | Flexible | View on Amazon |
| GATES Fits: 1.8L L4 | 25253 | 🇺🇸 US 🇨🇦 CA | Flexible | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular Fits: 1.8L L4 | 70687 | 🇺🇸 US 🇨🇦 CA | Curved | View on Amazon |
| GATES Popular Fits: 1.8L L4 | 20801 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| ACDELCO Fits: 1.6L L4 | 31610 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
| ACDELCO Fits: 1.8L L4 | 20075S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| ACDELCO Fits: 1.8L L4 | 20027S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| CONTINENTAL Fits: 1.6L L4 | 61055 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| DAYCO Fits: 1.8L L4 | 70831 | 🇺🇸 US 🇨🇦 CA | Curved | View on Amazon |
| GATES Fits: 1.8L L4 | 20476 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
Universal Hose (Straight, Bulk)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Fits: 1.8L L4 | 76138 | 🇺🇸 US 🇨🇦 CA | Straight - Priced Per Foot | View on Amazon |
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.
14 Radiator Hose parts are listed for the 1974 Fiat 124, from GATES, ACDELCO, DAYCO and 1 other brand. GATES 25252 carries the "Popular" badge. 1 part fits every engine; the other 13 are engine-specific.
Economy: 5 parts, from GATES, ACDELCO and DAYCO. A representative part number is GATES 25252.
The Standard Replacement section: 8 options from ACDELCO, DAYCO, GATES and 1 other brand. DAYCO 70687 is listed in this group.
The Universal Hose (Straight, Bulk) section lists 1 option from DAYCO — grouped under the catalog's "Universal Hose (Straight, Bulk)" designation — the notes column spells out what sets them apart. DAYCO 76138 is listed in this group.
Temperature Sender / Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 1974 124 engines | TS109 | 🇺🇸 US 🇨🇦 CA | with Gauge | View on Amazon |
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.
This group shows a single part: STANDARD MOTOR PRODUCTS TS109.
Thermostat
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: all 1974 124 engines | 33508 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
| GATES Fits: all 1974 124 engines | 33509 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 300160 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 300195 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 300180 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 1974 124 engines | 5200160 | 🇺🇸 US 🇨🇦 CA | Ultra Stat | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 5200180 | 🇺🇸 US 🇨🇦 CA | Ultra Stat | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 5200195 | 🇺🇸 US 🇨🇦 CA | Ultra Stat | View on Amazon |
Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1974 124 engines | 2000160 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Popular Fits: all 1974 124 engines | 2000195 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Popular Fits: all 1974 124 engines | 2000180 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | MRD100 | 🇺🇸 US 🇨🇦 CA | Racing Thermostat | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 1974 124 engines | 7200180 | 🇺🇸 US 🇨🇦 CA | Fail-Safe | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 7200195 | 🇺🇸 US 🇨🇦 CA | Fail-Safe | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 7200160 | 🇺🇸 US 🇨🇦 CA | Fail-Safe | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1974 124 engines | 200195 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD Popular Fits: all 1974 124 engines | 200180 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| GATES Fits: all 1974 124 engines | 33009 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| GATES Fits: all 1974 124 engines | 33006 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| GATES Fits: all 1974 124 engines | 33008 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 200205 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 200160 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | 256180 | 🇺🇸 US 🇨🇦 CA | Includes Housing, Thermostat | View on Amazon |
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.
23 Thermostat parts are listed for the 1974 Fiat 124, from MOTORAD and GATES. MOTORAD 2000160 carries the "Popular" badge. All of them fit every engine offered in the 1974 124.
Economy: 5 parts, from MOTORAD and GATES. A representative part number is GATES 33508.
The Heavy Duty section lists 3 options from MOTORAD — rated for severe service. MOTORAD 5200160 is listed in this group.
In the Performance grade, MOTORAD supplies 4 parts: engineered beyond original-equipment specification. A representative part number is MOTORAD 2000160.
The Premium section: 3 options from MOTORAD. MOTORAD 7200180 is listed in this group.
The Standard Replacement section: 8 options from MOTORAD and GATES. MOTORAD 200195 is listed in this group.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: all 1974 124 engines | 34030 | 🇺🇸 US 🇨🇦 CA | Thermostat Gasket - 3 1/4" x 3 1/2" Gasket Material | View on Amazon |
| GATES Fits: all 1974 124 engines | 33635 | 🇺🇸 US 🇨🇦 CA | Thermostat Gasket - 4" x 6" Gasket Material | View on Amazon |
| MOTORAD Fits: all 1974 124 engines | MG30 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
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.
3 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 1974 Fiat 124 come from 2 brands — GATES and MOTORAD. Every part fits both the 1.6L L4 and the 1.8L L4.
This group includes GATES 34030, GATES 33635 and MOTORAD MG30.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 1.8L L4 | 1310309 | 🇺🇸 US 🇨🇦 CA | Includes Gasket | View on Amazon |
| FVP Fits: all 1974 124 engines | US9003 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| US MOTOR WORKS Fits: all 1974 124 engines | US9003 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GMB Popular Fits: all 1974 124 engines | 1231030 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: all 1974 124 engines | 1231030 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
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.
5 Water Pump parts are listed for the 1974 Fiat 124, from FVP, BECK/ARNLEY, US MOTOR WORKS and 1 other brand. GMB 1231030 carries the "Popular" badge. 4 parts fit every engine; the other 1 is engine-specific.
Economy: 3 parts, from BECK/ARNLEY, FVP and US MOTOR WORKS. A representative part number is BECK/ARNLEY 1310309.
The Standard Replacement section: 2 options from GMB and FVP. GMB 1231030 is listed in this group.
Part numbers include GMB 1231030, BECK/ARNLEY 1310309 and FVP US9003, among others listed above.
Buying Cooling System Parts for a 1974 Fiat 124
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- Match the engine first. Some cooling system parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Thermostat and Coolant / Antifreeze .
Frequently Asked Questions
How many cooling system parts fit the 1974 Fiat 124?
Our catalog currently lists 71 cooling system parts for the 1974 Fiat 124 across 8 subcategories and 15 brands, covering both the 1.6L L4 and the 1.8L L4. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 1974 Fiat 124 engines?
Some do. 57 parts fit every engine; the other 14 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of cooling system problems on a 1974 Fiat 124?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1974 Fiat 124 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 1974 Fiat 124?
First match the engine — each row shows which engine(s) the part fits. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1974 Fiat 124
Cooling System Parts for Other Fiat 124 Years
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