2018 Freightliner 122SD 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

11 Coolant / Antifreeze parts for the 2018 Freightliner 122SD come from 3 brands — PRESTONE, PEAK and VALVOLINE. The "Popular" part is PRESTONE AF3100. Every part fits all 4 engine options (12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL).

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, PRESTONE, PEAK and VALVOLINE supply 6 parts: rated for severe service. A representative part number is PEAK FCA1GAL.

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.

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

4 Coolant Filter parts for the 2018 Freightliner 122SD come from 3 brands — WIX, DONALDSON and HASTINGS / BALDWIN.

Listed part numbers: DONALDSON P550867, HASTINGS / BALDWIN WC23 and WIX 24113, plus the other parts above.

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

2 Intercooler parts for the 2018 Freightliner 122SD come from 2 brands — GPD and SPECTRA PREMIUM. Every part fits all 4 engine options (12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL).

Listed part numbers: GPD 2711525 and SPECTRA PREMIUM 44011730.

This table covers the Intercooler Air Hose pipes. Read more

5 Intercooler Air Hose / Pipe parts for the 2018 Freightliner 122SD come from 2 brands — CONTINENTAL and GATES.

This group includes CONTINENTAL 57504, CONTINENTAL 57513 and CONTINENTAL 57514 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

7 Radiator Hose parts are listed for the 2018 Freightliner 122SD, from GATES, ACDELCO and CONTINENTAL.

The Standard Replacement section: 2 options from GATES. GATES 24047 is listed in this group.

The Universal Hose (Straight, Bulk) section lists 3 options from ACDELCO, CONTINENTAL and GATES — grouped under the catalog's "Universal Hose (Straight, Bulk)" designation — the notes column spells out what sets them apart. ACDELCO 31064 is listed in this group.

2 ungrouped parts are not assigned to a grade, with the same engine-level match.

Part numbers include GATES 24047, GATES 52170 and ACDELCO 31064, among others listed above.

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

9 Thermostat parts are listed for the 2018 Freightliner 122SD, from MOTORAD, CALORSTAT and GATES. GATES 34148 carries the "Popular" badge.

The Heavy Duty section: 1 option from GATES. GATES 34148 is listed in this group.

The Standard Replacement section: 6 options from MOTORAD and CALORSTAT. MOTORAD 406190 is listed in this group.

2 ungrouped parts are not assigned to a grade, with the same engine-level match.

This group includes GATES 34148, MOTORAD 406190 and CALORSTAT THS1910582 and the remaining parts above.

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 for the 2018 Freightliner 122SD come from 2 brands — DAYTON and ELRING.

Listed part numbers: 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

5 Water Pump parts are listed for the 2018 Freightliner 122SD, from DAYCO and GATES.

In the High Volume / Pressure grade, GATES supplies 2 parts: grouped under the catalog's "High Volume / Pressure" designation — the notes column spells out what sets them apart. A representative part number is GATES 44057HD.

The Standard Replacement section: 3 options from DAYCO. DAYCO DP783 is listed in this group.

This group includes GATES 44057HD, GATES 45052HD and DAYCO DP783 and the remaining parts above.

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

This group shows a single part: ELRING 004010.