This page lists 64 cooling system parts for the 2023 Freightliner Cascadia, across 9 part types, covering all 7 engine options (11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged and more). Every part shows its brand, manufacturer part number and fitment notes.
The cooling system system on the 2023 Freightliner Cascadia 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 (31 parts), Coolant / Antifreeze (13 parts) and Radiator Hose (8 parts). The other 6 part types cover the remaining 12 parts.
The 2023 Freightliner Cascadia was sold with 7 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
10 brands supply cooling system parts for the 2023 Freightliner Cascadia, led by CALORSTAT (22 parts), PRESTONE (11 parts) and GATES (10 parts), plus 7 more brands. Quality grades include Standard Replacement, Heavy Duty and Premium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2023 Freightliner Cascadia. 10 parts have it, including PRESTONE AF3100 (Coolant / Antifreeze) and GATES 34148 (Thermostat). 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: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | AF3055 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | AF3100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PEAK Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | FCA1GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fleet Charge1 Gallon | View on Amazon |
| PEAK Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | FXA1GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Final Charge Global1 Gallon | View on Amazon |
| PRESTONE Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | AFC10000 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Command ESi PrechargedPurple | View on Amazon |
| PRESTONE Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | AFC13000 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Command COR-Guard Nitrite Free-Noat Extended Life CoolantRed | View on Amazon |
| PRESTONE Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | AFC12100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | AF2100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | All Vehicles10yr/300k mi | View on Amazon |
| PRESTONE Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | AFMAX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: ELECTRIC | AFC10000 | 🇺🇸 US | Command ESi PrechargedPurple | View on Amazon |
| PRESTONE Fits: ELECTRIC | AFC12100 | 🇺🇸 US | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
| PRESTONE Fits: ELECTRIC | 115CEL | 🇺🇸 US | Celsius Extended Life Antifreeze or Command ESi Precharged Can1 Gallon | View on Amazon |
| PRESTONE Fits: ELECTRIC | 78065 | 🇺🇸 US | Heavy Duty | 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 are listed for the 2023 Freightliner Cascadia, from PRESTONE and PEAK. PRESTONE AF3100 carries the "Popular" badge.
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 5 options from PRESTONE and PEAK — rated for severe service. PEAK FCA1GAL 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.
4 ungrouped parts are not assigned to a grade, with the same engine-level match.
Coolant Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DONALDSON Fits: 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | P551008 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Coolant Filter, Cartridge | 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.
One part is listed for the 2023 Freightliner Cascadia — DONALDSON P551008.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | 6031316 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
This group shows a single part: DORMAN 6031316.
Intercooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | 44011748 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with 36.25 IN X 26.3125 IN X 1.9375 IN Corewith 4 IN Inlet | View on Amazon |
This table covers the intercoolers that cool turbo or supercharger charge air.
One part is listed for the 2023 Freightliner Cascadia — SPECTRA PREMIUM 44011748.
Intercooler Air Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Fits: 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | 57513 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Convoluted Charge Air | View on Amazon |
| GATES Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | 26204 | 🇺🇸 US 🇨🇦 CA | Turbocharger Hose (Ring-Retained)4" x 8" (110 psi) | View on Amazon |
| GATES Fits: 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | 26203 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Turbocharger Hose (Ring-Retained)4" x 6" (110 psi) | View on Amazon |
This table covers the Intercooler Air Hose pipes.
3 Intercooler Air Hose / Pipe parts are listed for the 2023 Freightliner Cascadia, from GATES and CONTINENTAL.
Part numbers include CONTINENTAL 57513, GATES 26204 and GATES 26203.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AGILITY Fits: 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | 8070157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HD | View on Amazon |
| SPECTRA PREMIUM Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | 20011775P | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Aluminum Core with Plastic Tanks | View on Amazon |
| SPECTRA PREMIUM Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | 20011775 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Aluminum Core / Aluminum Tank | View on Amazon |
| SPECTRA PREMIUM Fits: 11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | 20011780P | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Aluminum Core with Plastic Tanks | 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.
4 Radiator parts are listed for the 2023 Freightliner Cascadia, from SPECTRA PREMIUM and AGILITY.
This group includes AGILITY 8070157, SPECTRA PREMIUM 20011775P and SPECTRA PREMIUM 20011775 and the remaining parts above.
Radiator Hose
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Fits: 14.8L L6 DIESEL Turbocharged | 61116 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Molded | View on Amazon |
| GATES Fits: 11.9L DIESEL, 11.9L Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | 24047 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Molded | View on Amazon |
| GATES Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | 21891 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GATES Fits: 11.9L Turbocharged | 52465 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GATES Fits: 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged | 52120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Molded | View on Amazon |
| GATES Fits: 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged | 52121 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Molded | View on Amazon |
| GATES Fits: 15.6L L6 DIESEL Turbocharged | 52111 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Molded | View on Amazon |
| GATES Fits: 15.6L L6 DIESEL Turbocharged | 52112 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
8 Radiator Hose parts for the 2023 Freightliner Cascadia come from 2 brands — GATES and CONTINENTAL.
Listed part numbers: CONTINENTAL 61116, GATES 24047 and GATES 21891, plus the other parts above.
Thermostat
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | 34148 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Popular Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1695876 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Popular Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1910488 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| MOTORAD Popular Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | 406190 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes Seal | View on Amazon |
| CALORSTAT Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1695782 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1910582 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | PerformanceDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1910588 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1911482 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1910682 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1913277 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1913482 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Height Between Flanges: 1.29 InDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1911787 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | THS1913182 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Height Between Flanges: 1.27 InDoes Not Include Seal | View on Amazon |
| MOTORAD Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | 406160 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes Seal | View on Amazon |
| MOTORAD Fits: 11.9L Turbocharged | 407825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 225 Degrees Ffor Engine Oil Cooler System | View on Amazon |
| MOTORAD Fits: 11.9L Turbocharged, 14.9L L6 DIESEL Turbocharged | 406180 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes Seal | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Popular Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1695876 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Popular Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1910488 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Popular Fits: 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged, 11.9L DIESEL | THS1910582 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | PerformanceDoes Not Include Seal | View on Amazon |
| MOTORAD Popular Fits: 11.9L DIESEL | 406190 | 🇺🇸 US | Includes Seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1695782 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1910588 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1911482 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1910682 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1913277 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1913482 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Height Between Flanges: 1.29 InDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1911787 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does not include seal | View on Amazon |
| CALORSTAT Fits: 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | THS1913182 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Height Between Flanges: 1.27 InDoes Not Include Seal | View on Amazon |
| MOTORAD Fits: 11.9L DIESEL | 406160 | 🇺🇸 US | Includes Seal | View on Amazon |
| MOTORAD Fits: 11.9L DIESEL | 407825 | 🇺🇸 US | 225 Degrees Ffor Engine Oil Cooler System | View on Amazon |
| MOTORAD Fits: 11.9L DIESEL | 406180 | 🇺🇸 US | 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.
31 Thermostat parts for the 2023 Freightliner Cascadia come from 3 brands — CALORSTAT, MOTORAD and GATES. The "Popular" part is GATES 34148. Grades run from Heavy Duty through Standard Replacement; Standard Replacement is the most populated section, led by CALORSTAT and MOTORAD.
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 Cascadia.
Listed part numbers: DORMAN 6745003G and DORMAN 6745008G.
Buying Cooling System Parts for a 2023 Freightliner Cascadia
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. Every cooling system part here is 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 2023 Freightliner Cascadia?
Our catalog currently lists 64 cooling system parts for the 2023 Freightliner Cascadia across 9 subcategories and 10 brands, covering all 7 engine options (11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged and more). Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2023 Freightliner Cascadia engines?
Yes. Every cooling system part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 Cascadia?
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 Cascadia 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 Cascadia?
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 Cascadia
Cooling System Parts for Other Freightliner Cascadia Years
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