The 1968 Fiat 850 has 61 cooling system parts with verified fitment on this page — 4 part types and 10 brands, covering all 3 engine options (817cc L4, 843cc L4 and 903cc L4). Each part includes a manufacturer part number and application notes.
The cooling system system on the 1968 Fiat 850 keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. The largest groups are Thermostat (28 parts), Radiator Hose (17 parts) and Coolant / Antifreeze (15 parts). The other 1 part type covers the remaining 1 part.
The 1968 Fiat 850 was sold with 3 engines. 32 parts fit every engine; the other 29 are engine-specific. Each part shows which engine(s) it fits.
10 brands supply cooling system parts for the 1968 Fiat 850, led by MOTORAD (17 parts), GATES (13 parts) and PEAK (7 parts), plus 7 more brands. Quality grades include Standard Replacement, Economy and Premium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1968 Fiat 850. 13 parts have it, including FVP MV5050GAL (Coolant / Antifreeze) and DAYCO 81151 (Radiator Hose). Each part number opens a page with every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 1968 850 engines | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: all 1968 850 engines | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PRESTONE Popular Fits: all 1968 850 engines | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK Fits: all 1968 850 engines | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE Fits: all 1968 850 engines | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 1968 850 engines | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 1968 850 engines | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 1968 850 engines | PXA1GAL | 🇺🇸 US 🇨🇦 CA | 1 GallonGlobal Lifetime | View on Amazon |
| PRESTONE Fits: all 1968 850 engines | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: all 1968 850 engines | GREEN5050GAL | 🇺🇸 US 🇨🇦 CA | Low Silicate Blend1 Gallon | View on Amazon |
| PEAK Fits: all 1968 850 engines | BMA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1968 850 engines | RUA1GAL | 🇺🇸 US 🇨🇦 CA | Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1968 850 engines | FFA1GAL | 🇺🇸 US 🇨🇦 CA | Full Force Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1968 850 engines | SEP1GAL | 🇺🇸 US 🇨🇦 CA | Sierra Conventional Green Concentrate Low Toxic Option1 Gallon | View on Amazon |
| PRESTONE Fits: all 1968 850 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 are listed for the 1968 Fiat 850, from PEAK, PRESTONE, FVP and 1 other brand. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 1968 850.
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.
Radiator Hose
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular Fits: 903cc L4 | 81151 | 🇺🇸 US 🇨🇦 CA | Flex Radiator Hose | View on Amazon |
| GATES Popular Fits: 817cc L4, 843cc L4 | 25474 | 🇺🇸 US 🇨🇦 CA | Flexible | View on Amazon |
| GATES Popular Fits: 817cc L4, 843cc L4 | 25476 | 🇺🇸 US 🇨🇦 CA | Flexible | View on Amazon |
| ACDELCO Fits: 817cc L4, 843cc L4 | 31608 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
| ACDELCO Fits: 817cc L4, 843cc L4 | 31634 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
| ACDELCO Fits: 817cc L4, 843cc L4 | 31635 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
| DAYCO Fits: 903cc L4 | 81041 | 🇺🇸 US 🇨🇦 CA | Flex Radiator Hose | View on Amazon |
| DAYCO Fits: 903cc L4 | 81141 | 🇺🇸 US 🇨🇦 CA | Flex Radiator Hose | View on Amazon |
| DAYCO Fits: 903cc L4 | 81011 | 🇺🇸 US 🇨🇦 CA | Flex Radiator Hose | View on Amazon |
| GATES Fits: 817cc L4, 843cc L4 | 25252 | 🇺🇸 US 🇨🇦 CA | Flexible | View on Amazon |
| GATES Fits: 817cc L4, 843cc L4 | 25249 | 🇺🇸 US 🇨🇦 CA | Flexible | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 817cc L4, 843cc L4 | 20137 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| ACDELCO Fits: 817cc L4, 843cc L4 | 20037S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| ACDELCO Fits: 817cc L4, 843cc L4 | 20002S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| DAYCO Fits: 903cc L4 | 70531 | 🇺🇸 US 🇨🇦 CA | Curved | View on Amazon |
| GATES Fits: 817cc L4, 843cc L4 | 20556 | 🇺🇸 US 🇨🇦 CA | Molded31/32" x 10 3/32" Does Not Contain Spring | View on Amazon |
| GATES Fits: 817cc L4, 843cc L4 | 20791 | 🇺🇸 US 🇨🇦 CA | 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.
17 Radiator Hose parts for the 1968 Fiat 850 come from 3 brands — GATES, DAYCO and ACDELCO. The "Popular" part is DAYCO 81151.
The Economy section: 11 options from DAYCO, GATES and ACDELCO. DAYCO 81151 is listed in this group.
Standard Replacement: 6 parts, from GATES, ACDELCO and DAYCO. A representative part number is GATES 20137.
Thermostat
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1968 850 engines | 300180 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
| GATES Fits: 817cc L4, 843cc L4 | 33508 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
| GATES Fits: 817cc L4, 843cc L4 | 33509 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
| MOTORAD Fits: all 1968 850 engines | 300160 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
| MOTORAD Fits: all 1968 850 engines | 300195 | 🇺🇸 US 🇨🇦 CA | Economy | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 1968 850 engines | 5200160 | 🇺🇸 US 🇨🇦 CA | Ultra Stat | View on Amazon |
| MOTORAD Fits: all 1968 850 engines | 5200180 | 🇺🇸 US 🇨🇦 CA | Ultra Stat | View on Amazon |
| MOTORAD Fits: all 1968 850 engines | 5200195 | 🇺🇸 US 🇨🇦 CA | Ultra Stat | View on Amazon |
Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1968 850 engines | 2000160 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Popular Fits: all 1968 850 engines | 2000195 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Popular Fits: all 1968 850 engines | 2000180 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Fits: all 1968 850 engines | MRD100 | 🇺🇸 US 🇨🇦 CA | Racing Thermostat | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 1968 850 engines | 7200180 | 🇺🇸 US 🇨🇦 CA | Fail-Safe | View on Amazon |
| MOTORAD Fits: all 1968 850 engines | 7200195 | 🇺🇸 US 🇨🇦 CA | Fail-Safe | View on Amazon |
| MOTORAD Fits: all 1968 850 engines | 7200160 | 🇺🇸 US 🇨🇦 CA | Fail-Safe | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1968 850 engines | 200195 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD Popular Fits: all 1968 850 engines | 200180 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| BECK/ARNLEY Fits: 817cc L4 | 1430156 | 🇺🇸 US 🇨🇦 CA | Alternate TemperatureGasket/Seal Not Included | View on Amazon |
| BECK/ARNLEY Fits: 817cc L4 | 1430149 | 🇺🇸 US 🇨🇦 CA | OE TemperatureGasket/Seal Not Included | View on Amazon |
| BECK/ARNLEY Fits: 817cc L4 | 1430131 | 🇺🇸 US 🇨🇦 CA | Alternate TemperatureGasket/Seal Not Included | View on Amazon |
| CALORSTAT Fits: 817cc L4, 843cc L4 | TH137892 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: 817cc L4, 843cc L4 | THF137892 | 🇺🇸 US 🇨🇦 CA | High EfficiencyLarger Main Valve Seat | View on Amazon |
| CALORSTAT Fits: 817cc L4, 843cc L4 | TH137896 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| GATES Fits: 817cc L4, 843cc L4 | 33009 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| GATES Fits: 817cc L4, 843cc L4 | 33006 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| GATES Fits: 817cc L4, 843cc L4 | 33008 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD Fits: all 1968 850 engines | 200205 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD Fits: all 1968 850 engines | 200160 | 🇺🇸 US 🇨🇦 CA | Standard | 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.
28 Thermostat parts for the 1968 Fiat 850 come from 4 brands — MOTORAD, GATES, BECK/ARNLEY and 1 other brand. The "Popular" part is MOTORAD 300180. They are grouped as Economy, Heavy Duty, Performance, Premium and Standard Replacement, with Standard Replacement the largest group at 13 parts from MOTORAD, BECK/ARNLEY, CALORSTAT and 1 other brand.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 817cc L4, 843cc L4 | 33635 | 🇺🇸 US 🇨🇦 CA | Thermostat Gasket - 4" x 6" Gasket Material | 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.
One part is listed for the 1968 Fiat 850 — GATES 33635.
Buying Cooling System Parts for a 1968 Fiat 850
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 Radiator Hose .
Frequently Asked Questions
How many cooling system parts fit the 1968 Fiat 850?
Our catalog currently lists 61 cooling system parts for the 1968 Fiat 850 across 4 subcategories and 10 brands, covering all 3 engine options (817cc L4, 843cc L4 and 903cc L4). Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 1968 Fiat 850 engines?
Some do. 32 parts fit every engine; the other 29 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 1968 Fiat 850?
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 1968 Fiat 850 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 1968 Fiat 850?
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 1968 Fiat 850
Cooling System Parts for Other Fiat 850 Years
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