The 2023 Freightliner XC has 11 cooling system parts with verified fitment on this page — 3 part types and 4 brands, covering all 3 engine options (14.9L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged and 8.9L L6 DIESEL Turbocharged). Each part includes a manufacturer part number and application notes.
The cooling system system on the 2023 Freightliner XC keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. All 11 listed parts are Coolant / Antifreeze (7 parts), Thermostat (2 parts) and Thermostat / Thermostat Housing / Water Outlet Seal (2 parts).
The 2023 Freightliner XC was sold with 3 engines. 8 parts fit every engine; the other 3 are engine-specific. Each part shows which engine(s) it fits.
4 brands supply cooling system parts for the 2023 Freightliner XC, led by PRESTONE (7 parts), DORMAN (2 parts) and CALORSTAT (1 part), plus 1 more brand. Quality grades include Heavy Duty, Premium and Compatible With All Colors.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2023 Freightliner XC. 2 parts have it, including PRESTONE AF3100 (Coolant / Antifreeze) and PRESTONE AF2100 (Coolant / Antifreeze). 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 2023 XC engines | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2023 XC engines | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2023 XC engines | AFC10000 | 🇺🇸 US 🇨🇦 CA | Command ESi PrechargedPurple | View on Amazon |
| PRESTONE Fits: all 2023 XC engines | AFC13000 | 🇺🇸 US 🇨🇦 CA | Command COR-Guard Nitrite Free-Noat Extended Life CoolantRed | View on Amazon |
| PRESTONE Fits: all 2023 XC engines | AFC12100 | 🇺🇸 US 🇨🇦 CA | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2023 XC engines | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PRESTONE Fits: all 2023 XC engines | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 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.
PRESTONE supplies the 7 Coolant / Antifreeze parts for the 2023 Freightliner XC. PRESTONE AF3100 carries the "Popular" badge. All of them fit every engine offered in the 2023 XC.
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, PRESTONE supplies 1 part: the catalog's value-priced group. A representative part number is PRESTONE AF3100.
The Heavy Duty section lists 3 options from PRESTONE — rated for severe service. PRESTONE AFC10000 is listed in this group.
The Premium section lists 2 options from PRESTONE — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.
Part numbers include PRESTONE AF3100, PRESTONE AF3055 and PRESTONE AFC10000, among others listed above.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Fits: all 2023 XC engines | TH713082J | 🇺🇸 US 🇨🇦 CA | PerformanceIncludes 1 Rubber Gasket | 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.
2 Thermostat parts for the 2023 Freightliner XC come from 2 brands — CALORSTAT and MOTORAD. 1 part fits every engine; the other 1 is engine-specific.
This group includes CALORSTAT TH713082J and MOTORAD 923192.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 14.9L L6 DIESEL Turbocharged | 6745003G | 🇺🇸 US 🇨🇦 CA | Housing to Flange | View on Amazon |
| DORMAN Fits: 14.9L L6 DIESEL Turbocharged | 6745008G | 🇺🇸 US 🇨🇦 CA | Housing to Cylinder Head | 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.
DORMAN supplies both parts for the 2023 Freightliner XC.
This group includes DORMAN 6745003G and DORMAN 6745008G.
Buying Cooling System Parts for a 2023 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: Coolant / Antifreeze and Thermostat .
Frequently Asked Questions
How many cooling system parts fit the 2023 Freightliner XC?
Our catalog currently lists 11 cooling system parts for the 2023 Freightliner XC across 3 subcategories and 4 brands, covering all 3 engine options (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 2023 Freightliner XC engines?
Some do. 8 parts fit every engine; the other 3 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 2023 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 2023 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 2023 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 2023 Freightliner XC
Cooling System Parts for Other Freightliner XC Years
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