32 Cooling system parts are listed for the 2020 Freightliner XC, in 6 part types, covering all 4 engine options (11.9L DIESEL, 14.9L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged and 8.9L L6 DIESEL Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2020 Freightliner XC, 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. 29 parts of the 32 listed are Thermostat (14 parts), Coolant / Antifreeze (13 parts) and Thermostat / Thermostat Housing / Water Outlet Seal (2 parts). The other 3 part types cover the remaining 3 parts.
The 2020 Freightliner XC was sold with 4 engines. 12 parts fit every engine; the other 20 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2020 Freightliner XC cooling system parts are PRESTONE (7 parts), MOTORAD (7 parts) and CALORSTAT (6 parts), plus 6 more brands. Quality grades include Heavy Duty, Standard Replacement and Premium.
8 parts on this 2020 Freightliner XC page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PRESTONE AF3100 (Coolant / Antifreeze) and GATES 34308 (Thermostat). 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 2020 XC engines | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2020 XC engines | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 6.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged | ZXG051 | 🇺🇸 US 🇨🇦 CA | G05 Yellow1 Gallon | View on Amazon |
| PEAK Fits: all 2020 XC engines | FCA1GAL | 🇺🇸 US 🇨🇦 CA | Fleet Charge1 Gallon | View on Amazon |
| PEAK Fits: all 2020 XC engines | FNA1GAL | 🇺🇸 US 🇨🇦 CA | Final Charge1 Gallon | View on Amazon |
| PEAK Fits: all 2020 XC engines | FXA1GAL | 🇺🇸 US 🇨🇦 CA | Final Charge Global1 Gallon | View on Amazon |
| PRESTONE Fits: all 2020 XC engines | AFC10000 | 🇺🇸 US 🇨🇦 CA | Command ESi PrechargedPurple | View on Amazon |
| PRESTONE Fits: all 2020 XC engines | AFC13000 | 🇺🇸 US 🇨🇦 CA | Command COR-Guard Nitrite Free-Noat Extended Life CoolantRed | View on Amazon |
| PRESTONE Fits: all 2020 XC engines | AFC12100 | 🇺🇸 US 🇨🇦 CA | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
| VALVOLINE Fits: all 2020 XC engines | 846439 | 🇺🇸 US 🇨🇦 CA | HD Nitrite Free Extended Life Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2020 XC engines | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PRESTONE Fits: all 2020 XC engines | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: all 2020 XC engines | 861399 | 🇺🇸 US 🇨🇦 CA | G40 Pink1 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.
13 Coolant / Antifreeze parts for the 2020 Freightliner XC come from 3 brands — PRESTONE, VALVOLINE and PEAK. The "Popular" part is PRESTONE AF3100. 12 parts fit every engine; the other 1 is engine-specific.
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 1 option from PRESTONE — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.
In the Heavy Duty grade, PEAK, PRESTONE and VALVOLINE supply 8 parts: rated for severe service. A representative part number is VALVOLINE ZXG051.
In the Premium grade, PRESTONE supplies 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, VALVOLINE supplies 1 part: built to original-equipment specification. A representative part number is VALVOLINE 861399.
Coolant Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WIX Fits: 6.7L L6 DIESEL Turbocharged | 24070 | 🇺🇸 US 🇨🇦 CA | Height: 5.214 InCoolant Spin-On Filter | View on Amazon |
This table covers the Coolant filters. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.
This group shows a single part: WIX 24070.
Intercooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM Fits: 14.9L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged | 44011743 | 🇺🇸 US 🇨🇦 CA | with 31.25 IN X 23.9375 IN X 2.9375 IN Corewith 3.5 IN Inlet | View on Amazon |
This table covers the intercoolers that cool turbo or supercharger charge air.
This group shows a single part: SPECTRA PREMIUM 44011743.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM Fits: 14.9L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged | 20011519 | 🇺🇸 US 🇨🇦 CA | Aluminum Core / Aluminum Tank | View on Amazon |
This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap.
This group shows a single part: SPECTRA PREMIUM 20011519.
Thermostat
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 8.9L L6 DIESEL Turbocharged | 34308 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Popular Fits: 8.9L L6 DIESEL Turbocharged | TH713082J | 🇺🇸 US 🇨🇦 CA | PerformanceIncludes 1 Rubber Gasket | View on Amazon |
| CALORSTAT Fits: 8.9L L6 DIESEL Turbocharged | THS1910582 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: 8.9L L6 DIESEL Turbocharged | THS1910588 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
| MOTORAD Fits: 8.9L L6 DIESEL Turbocharged | 407160 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| MOTORAD Fits: 8.9L L6 DIESEL Turbocharged | 407180 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Popular Fits: 11.9L DIESEL, 14.9L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged | TH713082J | 🇺🇸 US 🇨🇦 CA | PerformanceIncludes 1 Rubber Gasket | View on Amazon |
| MOTORAD Popular Fits: 11.9L DIESEL, 14.9L L6 DIESEL Turbocharged | 406190 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 14.9L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged | THS1910582 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 14.9L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged | THS1910588 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
| MOTORAD Fits: 11.9L DIESEL, 14.9L L6 DIESEL Turbocharged | 406160 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| MOTORAD Fits: 11.9L DIESEL, 14.9L L6 DIESEL Turbocharged | 406180 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| MOTORAD Fits: 11.9L DIESEL | 407825 | 🇺🇸 US 🇨🇦 CA | 225 Degrees Ffor Engine Oil Cooler System | View on Amazon |
| MOTORAD Fits: 6.7L L6 DIESEL Turbocharged | 923192 | 🇺🇸 US 🇨🇦 CA | Includes Seal | 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.
14 Thermostat parts are listed for the 2020 Freightliner XC, from MOTORAD, CALORSTAT and GATES. GATES 34308 carries the "Popular" badge.
The Heavy Duty section: 1 option from GATES. GATES 34308 is listed in this group.
The Standard Replacement section: 5 options from CALORSTAT and MOTORAD. CALORSTAT TH713082J is listed in this group.
8 ungrouped parts are not assigned to a grade, with the same engine-level match.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYTON Fits: 14.9L L6 DIESEL Turbocharged | 6745008G | 🇺🇸 US 🇨🇦 CA | Housing to Cylinder Head | View on Amazon |
| DAYTON Fits: 14.9L L6 DIESEL Turbocharged | 6745003G | 🇺🇸 US 🇨🇦 CA | Housing to Flange | 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.
2 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2020 Freightliner XC come from DAYTON.
Part numbers include DAYTON 6745008G and DAYTON 6745003G.
Buying Cooling System Parts for a 2020 Freightliner XC
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 2020 Freightliner XC?
Our catalog currently lists 32 cooling system parts for the 2020 Freightliner XC across 6 subcategories and 9 brands, covering all 4 engine options (11.9L DIESEL, 14.9L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged and 8.9L L6 DIESEL Turbocharged). Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2020 Freightliner XC engines?
Some do. 12 parts fit every engine; the other 20 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 2020 Freightliner XC?
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 2020 Freightliner XC 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 2020 Freightliner XC?
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 2020 Freightliner XC
Cooling System Parts for Other Freightliner XC Years
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