The 1964 Fiat 1100 has 24 cooling system parts with verified fitment on this page — 4 part types and 9 brands, covering both the 1.1L L4 and the 1.2L L4. Each part includes a manufacturer part number and application notes.
On the 1964 Fiat 1100, 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. 23 parts of the 24 listed are Coolant / Antifreeze (15 parts), Radiator Cap (4 parts) and Radiator Hose (4 parts). The other 1 part type covers the remaining 1 part.
The 1964 Fiat 1100 was sold with both the 1.1L L4 and the 1.2L L4. 19 parts fit every engine; the other 5 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1964 Fiat 1100 cooling system parts are PEAK (7 parts), PRESTONE (5 parts) and MOTORAD (3 parts), plus 6 more brands. Quality grades include Standard Replacement, Economy and Premium.
3 parts on this 1964 Fiat 1100 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and PRESTONE AF3100 (Coolant / Antifreeze). 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 1964 1100 engines | AF3055 | 🇺🇸 US | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: all 1964 1100 engines | MV5050GAL | 🇺🇸 US | Extended LifeAll Makes / All Models | View on Amazon |
| PRESTONE Popular Fits: all 1964 1100 engines | AF3100 | 🇺🇸 US | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK Fits: all 1964 1100 engines | BQA1GAL | 🇺🇸 US | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE Fits: all 1964 1100 engines | 719009 | 🇺🇸 US | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 1964 1100 engines | AF2100 | 🇺🇸 US | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 1964 1100 engines | PKP1GAL | 🇺🇸 US | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 1964 1100 engines | PXA1GAL | 🇺🇸 US | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: all 1964 1100 engines | AFMAX | 🇺🇸 US | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: all 1964 1100 engines | GREEN5050GAL | 🇺🇸 US | Low Silicate Blend1 Gallon | View on Amazon |
| PEAK Fits: all 1964 1100 engines | BMA1GAL | 🇺🇸 US | Blue Mountain Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1964 1100 engines | RUA1GAL | 🇺🇸 US | Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1964 1100 engines | FFA1GAL | 🇺🇸 US | Full Force Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1964 1100 engines | SEP1GAL | 🇺🇸 US | Sierra Conventional Green Concentrate Low Toxic Option1 Gallon | View on Amazon |
| PRESTONE Fits: all 1964 1100 engines | AF3300 | 🇺🇸 US | 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 1964 Fiat 1100 come from 4 brands — PEAK, PRESTONE, FVP and 1 other brand. The "Popular" part is FVP MV5050GAL. Every part fits both the 1.1L L4 and the 1.2L 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 |
|---|---|---|---|---|
| MOTORAD Fits: all 1964 1100 engines | 3003 | 🇺🇸 US | StandardIncluded In Tester Kit | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
This group shows a single part: MOTORAD 3003.
Radiator Cap
Locking Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 1964 1100 engines | ST4 | 🇺🇸 US | Safety Lever | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Fits: all 1964 1100 engines | RC0068 | 🇺🇸 US | PerformanceIncludes 2 seals | View on Amazon |
| GATES Fits: 1.2L L4 | 31524 | 🇺🇸 US | OE Type | View on Amazon |
| MOTORAD Fits: all 1964 1100 engines | T4 | 🇺🇸 US | Standard | 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.
4 Radiator Cap parts for the 1964 Fiat 1100 come from 3 brands — MOTORAD, CALORSTAT and GATES. 3 parts fit every engine; the other 1 is engine-specific.
In the Locking Replacement grade, MOTORAD supplies 1 part: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is MOTORAD ST4.
Standard Replacement: 3 parts, from CALORSTAT, GATES and MOTORAD. A representative part number is CALORSTAT RC0068.
Part numbers include MOTORAD ST4, CALORSTAT RC0068 and GATES 31524, among others listed above.
Radiator Hose
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 1.2L L4 | 25473 | 🇺🇸 US | Flexible | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 1.2L L4 | 20000S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| DAYCO Fits: 1.2L L4 | 71011 | 🇺🇸 US | Curved | View on Amazon |
| GATES Fits: 1.2L L4 | 20065 | 🇺🇸 US | Molded | 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.
4 Radiator Hose parts are listed for the 1964 Fiat 1100, from GATES, ACDELCO and DAYCO.
Economy: 1 part, from GATES. A representative part number is GATES 25473.
The Standard Replacement section: 3 options from ACDELCO, DAYCO and GATES. ACDELCO 20000S is listed in this group.
Part numbers include GATES 25473, ACDELCO 20000S and DAYCO 71011, among others listed above.
Buying Cooling System Parts for a 1964 Fiat 1100
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: Coolant / Antifreeze and Radiator Cap .
Frequently Asked Questions
How many cooling system parts fit the 1964 Fiat 1100?
Our catalog currently lists 24 cooling system parts for the 1964 Fiat 1100 across 4 subcategories and 9 brands, covering both the 1.1L L4 and the 1.2L L4. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 1964 Fiat 1100 engines?
Some do. 19 parts fit every engine; the other 5 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 1964 Fiat 1100?
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 1964 Fiat 1100 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 1964 Fiat 1100?
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 1964 Fiat 1100
Cooling System Parts for Other Fiat 1100 Years
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