2018 Freightliner Cascadia Cooling System Parts

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. Read more

12 Coolant / Antifreeze parts are listed for the 2018 Freightliner Cascadia, from PRESTONE, VALVOLINE and PEAK. PRESTONE AF3100 carries the "Popular" badge. 10 parts fit every engine; the other 2 are engine-specific.

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 7 options from PRESTONE, VALVOLINE and PEAK — rated for severe service. VALVOLINE ZXG051 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.

The Standard Replacement section lists 1 option from VALVOLINE — built to original-equipment specification. VALVOLINE 861399 is listed in this group.

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. Read more

5 Coolant Filter parts are listed for the 2018 Freightliner Cascadia, from DONALDSON and HASTINGS / BALDWIN.

This group includes DONALDSON P550866, DONALDSON P551008 and DONALDSON P550867 and the remaining parts above.

This table covers the Coolant Level sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

2 Coolant Level Sensor parts are listed for the 2018 Freightliner Cascadia, from DORMAN and GPD. All of them fit every engine offered in the 2018 Cascadia.

This group includes DORMAN 9245205 and GPD 1814798.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

4 Coolant Reservoir parts for the 2018 Freightliner Cascadia come from 3 brands — MAHLE / CLEVITE, DORMAN and GPD. Every part fits all 5 engine options (11.9L L6 Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL Turbocharged).

Listed part numbers: DORMAN 6031316, GPD 2421001 and MAHLE / CLEVITE CRT221000S, plus the other parts above.

This table covers the caps on the overflow / expansion tank. 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. Read more

2 Coolant Reservoir Cap parts for the 2018 Freightliner Cascadia come from 2 brands — DORMAN and MOTORAD. Every part fits all 5 engine options (11.9L L6 Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL Turbocharged).

Part numbers include DORMAN 9025403 and MOTORAD T46.

This table covers the adapters used to pressure-test this cooling system. Read more

3 Cooling System Tester Adapter parts are listed for the 2018 Freightliner Cascadia, from MOTORAD and GATES. 2 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: GATES 31391, MOTORAD 3128 and MOTORAD 3127.

This table covers the intercoolers that cool turbo or supercharger charge air. Read more

7 Intercooler parts are listed for the 2018 Freightliner Cascadia, from GPD and SPECTRA PREMIUM. 3 parts fit every engine; the other 4 are engine-specific.

This group includes GPD 2711602, GPD 2711652 and GPD 2711526 and the remaining parts above.

This table covers the Intercooler Air Hose pipes. Read more

4 Intercooler Air Hose / Pipe parts are listed for the 2018 Freightliner Cascadia, from GATES and CONTINENTAL.

Part numbers include CONTINENTAL 57513, GATES 26203 and GATES 29004, among others listed above.

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. Read more

8 Radiator parts are listed for the 2018 Freightliner Cascadia, from GPD, SPECTRA PREMIUM, AGILITY and 1 other brand. SPECTRA PREMIUM 20011775P carries the "Popular" badge. 6 parts fit every engine; the other 2 are engine-specific.

Economy: 5 parts, from GPD. A representative part number is GPD 9282671.

The Standard Replacement section: 2 options from SPECTRA PREMIUM and AGILITY. SPECTRA PREMIUM 20011775P is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

This group includes SPECTRA PREMIUM 20011775P, GPD 9282671 and GPD 9282672 and the remaining parts above.

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. Read more

12 Radiator Hose parts for the 2018 Freightliner Cascadia come from 3 brands — GATES, DAYCO and CONTINENTAL. The "Popular" part is DAYCO 70922.

Standard Replacement: 1 part, from GATES. A representative part number is GATES 24047.

In the Universal Hose (Straight, Bulk) grade, GATES supplies 1 part: grouped under the catalog's "Universal Hose (Straight, Bulk)" designation — the notes column spells out what sets them apart. A representative part number is GATES 24440.

10 further parts sit outside the graded sections, with the same engine-level match.

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. Read more

31 Thermostat parts for the 2018 Freightliner Cascadia come from 3 brands — CALORSTAT, MOTORAD and GATES. The "Popular" part is GATES 34148. Heavy Duty and Standard Replacement are all represented, and Standard Replacement alone accounts for 15 parts.

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. Read more

3 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2018 Freightliner Cascadia, from DAYTON and ELRING.

This group includes DAYTON 6745008G, DAYTON 6745003G and ELRING 004030.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

19 Water Pump parts for the 2018 Freightliner Cascadia come from 6 brands — US MOTOR WORKS, FVP, GMB and 3 other brands. The "Popular" part is US MOTOR WORKS US932.

The Economy section: 4 options from FVP and US MOTOR WORKS. US MOTOR WORKS US932 is listed in this group.

The High Volume / Pressure section lists 2 options from GATES — grouped under the catalog's "High Volume / Pressure" designation — the notes column spells out what sets them apart. GATES 44057HD is listed in this group.

Standard Replacement: 5 parts, from GMB and DAYCO. A representative part number is DAYCO DP815.

8 further parts sit outside the graded sections, with the same engine-level match.

This table covers the Water Pump & Fan Clutch assemblies. Read more

This group shows a single part: AGILITY 8870002.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2018 Freightliner Cascadia — ELRING 004010.