31 Cooling system parts are listed for the 2019 Freightliner MT, in 7 part types, covering the 6.7L L6 DIESEL Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2019 Freightliner MT, 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. 23 parts of the 31 listed are Coolant / Antifreeze (12 parts), Radiator Hose (7 parts) and Water Pump (4 parts). The other 4 part types cover the remaining 8 parts.
Every part on this page is matched to the 6.7L L6 DIESEL Turbocharged — the only engine offered in the 2019 Freightliner MT.
The most listed brands for 2019 Freightliner MT cooling system parts are PRESTONE (7 parts), GATES (5 parts) and VALVOLINE (3 parts), plus 11 more brands. Quality grades include Standard Replacement, Heavy Duty and High Volume / Pressure.
5 parts on this 2019 Freightliner MT page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PRESTONE AF3100 (Coolant / Antifreeze) and DAYCO 70577 (Radiator Hose). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | ZXG051 | 🇺🇸 US 🇨🇦 CA | G05 Yellow1 Gallon | View on Amazon |
| PEAK | FCA1GAL | 🇺🇸 US 🇨🇦 CA | Fleet Charge1 Gallon | View on Amazon |
| PEAK | FXA1GAL | 🇺🇸 US 🇨🇦 CA | Final Charge Global1 Gallon | View on Amazon |
| PRESTONE | AFC10000 | 🇺🇸 US 🇨🇦 CA | Command ESi PrechargedPurple | View on Amazon |
| PRESTONE | AFC13000 | 🇺🇸 US 🇨🇦 CA | Command COR-Guard Nitrite Free-Noat Extended Life CoolantRed | View on Amazon |
| PRESTONE | AFC12100 | 🇺🇸 US 🇨🇦 CA | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
| VALVOLINE | 846439 | 🇺🇸 US 🇨🇦 CA | HD Nitrite Free Extended Life Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PRESTONE | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | 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.
12 Coolant / Antifreeze parts for the 2019 Freightliner MT come from 3 brands — PRESTONE, VALVOLINE and PEAK. The "Popular" part is PRESTONE AF3100.
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, VALVOLINE and PEAK supply 7 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 Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 2421017 | 🇺🇸 US 🇨🇦 CA | Radiator Surge Overflow Tank Assembly | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
One part is listed for the 2019 Freightliner MT — GPD 2421017.
Intercooler Air Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL | 57512 | 🇺🇸 US 🇨🇦 CA | Convoluted Charge Air | View on Amazon |
| GATES | 26201 | 🇺🇸 US 🇨🇦 CA | Turbocharger Hose (Ring-Retained)Straight Hose | View on Amazon |
This table covers the Intercooler Air Hose pipes.
2 Intercooler Air Hose / Pipe parts for the 2019 Freightliner MT come from 2 brands — CONTINENTAL and GATES.
Listed part numbers: CONTINENTAL 57512 and GATES 26201.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM | 20011737 | 🇺🇸 US 🇨🇦 CA | All Aluminum Unit | View on Amazon |
| SPECTRA PREMIUM | 20011737P | 🇺🇸 US 🇨🇦 CA | 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.
2 Radiator parts for the 2019 Freightliner MT come from SPECTRA PREMIUM.
Part numbers include SPECTRA PREMIUM 20011737 and SPECTRA PREMIUM 20011737P.
Radiator Hose
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular | 70577 | 🇺🇸 US 🇨🇦 CA | Curved | View on Amazon |
| ACDELCO | 20199S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| CONTINENTAL | 60288 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GATES | 21571 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GATES | 52161 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
Universal Hose (Straight, Bulk)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | 24232 | 🇺🇸 US 🇨🇦 CA | Straight (Heavy-Duty 2-Ply)2" (60 psi) | View on Amazon |
| CONTINENTAL | 57032 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Straight | 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.
7 Radiator Hose parts are listed for the 2019 Freightliner MT, from GATES, CONTINENTAL, DAYCO and 1 other brand. DAYCO 70577 carries the "Popular" badge.
The Standard Replacement section: 5 options from GATES, DAYCO, ACDELCO and 1 other brand. DAYCO 70577 is listed in this group.
The Universal Hose (Straight, Bulk) section lists 2 options from GATES and CONTINENTAL — grouped under the catalog's "Universal Hose (Straight, Bulk)" designation — the notes column spells out what sets them apart. GATES 24232 is listed in this group.
This group includes DAYCO 70577, ACDELCO 20199S and CONTINENTAL 60288 and the remaining parts above.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT | TH713082J | 🇺🇸 US 🇨🇦 CA | PerformanceIncludes 1 Rubber Gasket | View on Amazon |
| GATES | 33915 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD | 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.
3 Thermostat parts are listed for the 2019 Freightliner MT, from CALORSTAT, GATES and MOTORAD.
Listed part numbers: CALORSTAT TH713082J, GATES 33915 and MOTORAD 923192.
Water Pump
High Volume / Pressure
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | US7123H | 🇺🇸 US 🇨🇦 CA | B Series New Style ISB Engine | View on Amazon |
| US MOTOR WORKS | US7123H | 🇺🇸 US 🇨🇦 CA | B Series New Style ISB Engine | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO | DP1000 | 🇺🇸 US 🇨🇦 CA | Serpentine Belt Driven | View on Amazon |
| MELLING | MWP521 | 🇺🇸 US 🇨🇦 CA | 7 Vane Plastic Impeller | View on Amazon |
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.
4 Water Pump parts are listed for the 2019 Freightliner MT, from FVP, US MOTOR WORKS, DAYCO and 1 other brand.
In the High Volume / Pressure grade, FVP and US MOTOR WORKS supply 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 FVP US7123H.
The Standard Replacement section: 2 options from DAYCO and MELLING. DAYCO DP1000 is listed in this group.
This group includes FVP US7123H and DAYCO DP1000 and the remaining parts above.
Buying Cooling System Parts for a 2019 Freightliner MT
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.
- Confirm you have the 6.7L L6 DIESEL Turbocharged engine — every part on this page is matched to it.
- 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 Radiator Hose .
Frequently Asked Questions
How many cooling system parts fit the 2019 Freightliner MT?
Our catalog currently lists 31 cooling system parts for the 2019 Freightliner MT across 7 subcategories and 14 brands, covering the 6.7L L6 DIESEL Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2019 Freightliner MT?
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 2019 Freightliner MT 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 2019 Freightliner MT?
Every part on this page is matched to the 6.7L L6 DIESEL Turbocharged engine. 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 2019 Freightliner MT
Cooling System Parts for Other Freightliner MT Years
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