57 Cooling system parts are listed for the 2012 International Lonestar, in 15 part types, covering the 14.9L L6 DIESEL Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The cooling system system on the 2012 International Lonestar 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 (10 parts), Water Pump (10 parts) and Coolant / Antifreeze (8 parts). The other 12 part types cover the remaining 29 parts.
The 2012 International Lonestar came with a single engine, the 14.9L L6 DIESEL Turbocharged, and every part is verified against it.
18 brands supply cooling system parts for the 2012 International Lonestar, led by MOTORAD (8 parts), GATES (6 parts) and GPD (5 parts), plus 15 more brands. Quality grades include Standard Replacement, Heavy Duty and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2012 International Lonestar. 8 parts have it, including VALVOLINE 719009 (Coolant / Antifreeze) and WIX 24113 (Coolant Filter). Each part number opens a page with every vehicle that part fits.
Coolant / Antifreeze
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | 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 | ZXED1 | 🇺🇸 US 🇨🇦 CA | HD Extended Life Red1 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.
8 Coolant / Antifreeze parts are listed for the 2012 International Lonestar, from VALVOLINE, PRESTONE and PEAK. VALVOLINE 719009 carries the "Popular" badge.
In the Economy grade, VALVOLINE supplies 1 part: the catalog's value-priced group. A representative part number is VALVOLINE 719009.
The Heavy Duty section lists 7 options from PRESTONE, VALVOLINE and PEAK — rated for severe service. VALVOLINE ZXG051 is listed in this group.
This group includes VALVOLINE 719009, VALVOLINE ZXG051 and PEAK FCA1GAL and the remaining parts above.
Coolant Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WIX Popular | 24113 | 🇺🇸 US | Coolant Spin-On Filter | View on Amazon |
| FAMOUS BRAND | 89113 | 🇺🇸 US 🇨🇦 CA | CoolantOE Number : WF2127 | View on Amazon |
| HASTINGS / BALDWIN | WC23 | 🇺🇸 US 🇨🇦 CA | Spin-On | View on Amazon |
| HASTINGS / BALDWIN | WC11 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WIX | 24112 | 🇺🇸 US | Coolant Spin-On Filter | 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.
5 Coolant Filter parts are listed for the 2012 International Lonestar, from WIX, HASTINGS / BALDWIN and FAMOUS BRAND. WIX 24113 carries the "Popular" badge.
Listed part numbers: WIX 24113, FAMOUS BRAND 89113 and HASTINGS / BALDWIN WC23, plus the other parts above.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 2421012 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
This group shows a single part: GPD 2421012.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 9025102 | 🇺🇸 US 🇨🇦 CA | with 15 Lb. Cap | View on Amazon |
| MOTORAD | T39 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
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.
2 Coolant Reservoir Cap parts for the 2012 International Lonestar come from 2 brands — DORMAN and MOTORAD.
Listed part numbers: DORMAN 9025102 and MOTORAD T39.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | 31379 | 🇺🇸 US 🇨🇦 CA | Cooling System PressureRadiator Cap | View on Amazon |
| GATES | 31410 | 🇺🇸 US 🇨🇦 CA | Cooling System Pressure | View on Amazon |
| MOTORAD | 3132 | 🇺🇸 US 🇨🇦 CA | StandardRadiator Cap Adapter | View on Amazon |
| MOTORAD | 3126 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
4 Cooling System Tester Adapter parts are listed for the 2012 International Lonestar, from GATES and MOTORAD.
Listed part numbers: GATES 31379, GATES 31410 and MOTORAD 3132, plus the other parts above.
Hose Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 9044000 | 🇺🇸 US 🇨🇦 CA | 1.75" DiameterCoolant | View on Amazon |
This table covers the Hose clamps.
One part is listed for the 2012 International Lonestar — DORMAN 9044000.
Intercooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 2711618 | 🇺🇸 US 🇨🇦 CA | with Original Equipment (OE) # 2612895C91 | View on Amazon |
| GPD | 2711619 | 🇺🇸 US 🇨🇦 CA | with Original Equipment (OE) # 2612896C91 | View on Amazon |
| GPD | 2711620 | 🇺🇸 US 🇨🇦 CA | with Original Equipment (OE) # 2601467C91 | View on Amazon |
This table covers the intercoolers that cool turbo or supercharger charge air.
GPD supplies the 3 Intercooler parts for the 2012 International Lonestar.
Part numbers include GPD 2711618, GPD 2711619 and GPD 2711620.
Intercooler Air Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL | 57513 | 🇺🇸 US 🇨🇦 CA | Convoluted Charge Air | View on Amazon |
This table covers the Intercooler Air Hose pipes.
One part is listed for the 2012 International Lonestar — CONTINENTAL 57513.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 9282776 | 🇺🇸 US 🇨🇦 CA | Fits Plastic Aluminum OEM Radiator Onlywith Original Equipment (OE) # 2596325C91 | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| OSC | HD9288 | 🇺🇸 US 🇨🇦 CA | 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 are listed for the 2012 International Lonestar, from GPD and OSC.
Economy: 1 part, from GPD. A representative part number is GPD 9282776.
The Standard Replacement section lists 1 option from OSC — built to original-equipment specification. OSC HD9288 is listed in this group.
This group includes GPD 9282776 and OSC HD9288.
Radiator Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | 31567 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD | 100410 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Radiator Cap | View on Amazon |
This table covers the caps that hold system pressure at the radiator or reservoir neck. 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.
2 Radiator Cap parts are listed for the 2012 International Lonestar, from GATES and MOTORAD.
Part numbers include GATES 31567 and MOTORAD 100410.
Radiator Hose
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular | 71813 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| CONTINENTAL | 61577 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| CONTINENTAL | 66552 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| DAYCO | 71812 | 🇺🇸 US 🇨🇦 CA | Curved or Molded Hose or Straight Hose | View on Amazon |
Universal Hose (Straight, Bulk)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL | 57040 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Straight - Priced Per Foot | 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.
5 Radiator Hose parts for the 2012 International Lonestar come from 2 brands — CONTINENTAL and DAYCO. The "Popular" part is DAYCO 71813.
Standard Replacement: 4 parts, from DAYCO and CONTINENTAL. A representative part number is DAYCO 71813.
In the Universal Hose (Straight, Bulk) grade, CONTINENTAL 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 CONTINENTAL 57040.
This group includes DAYCO 71813, CONTINENTAL 61577 and CONTINENTAL 66552 and the remaining parts above.
Thermostat
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | 34148 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty | View on Amazon |
| GATES Popular | 34146 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty | View on Amazon |
| GATES | 34149 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT | THS1910582 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| CALORSTAT | THS1910588 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
| CALORSTAT | THS1680171 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| MOTORAD | 406160 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| MOTORAD | 406190 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| MOTORAD | 407825 | 🇺🇸 US 🇨🇦 CA | 225 Degrees Ffor Engine Oil Cooler System | View on Amazon |
| MOTORAD | 406180 | 🇺🇸 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.
10 Thermostat parts for the 2012 International Lonestar come from 3 brands — MOTORAD, GATES and CALORSTAT. The "Popular" part is GATES 34148.
Heavy Duty: 3 parts, from GATES. A representative part number is GATES 34148.
Standard Replacement: 7 parts, from MOTORAD and CALORSTAT. A representative part number is CALORSTAT THS1910582.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYTON | 6745008G | 🇺🇸 US 🇨🇦 CA | Housing to Cylinder Head | View on Amazon |
| DAYTON | 6745003G | 🇺🇸 US 🇨🇦 CA | Housing to Flange | 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.
DAYTON supplies both parts for the 2012 International Lonestar.
Listed part numbers: DAYTON 6745008G and DAYTON 6745003G.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS Popular | US932 | 🇺🇸 US 🇨🇦 CA | ISX, ISZ12 Groove Pulley Complete Unit | View on Amazon |
| FVP | US932 | 🇺🇸 US 🇨🇦 CA | ISX, ISZ (12 Groove Pulley) Complete Unit (Short Bottom Outlet) | View on Amazon |
| FVP | US6344 | 🇺🇸 US 🇨🇦 CA | ISX (12 Groove Pulley) | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GMB Popular | 1962230 | 🇺🇸 US 🇨🇦 CA | without Water Pump HousingTwo-Piece Pump | View on Amazon |
| GMB | 1962230AH | 🇺🇸 US 🇨🇦 CA | Two-Piece Pumpwith Water Pump Housing | View on Amazon |
| GMB | 1961020 | 🇺🇸 US 🇨🇦 CA | One-Piece Pump | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS | US93 | 🇺🇸 US 🇨🇦 CA | ISX, ISZ12 Groove Pulley Pump Only | View on Amazon |
| US MOTOR WORKS | US6151 | 🇺🇸 US 🇨🇦 CA | ISX10 Groove Pulley | View on Amazon |
| US MOTOR WORKS | US6344 | 🇺🇸 US 🇨🇦 CA | ISX12 Groove Pulley | View on Amazon |
| US MOTOR WORKS | US933 | 🇺🇸 US 🇨🇦 CA | ISX, ISZ12 Groove Pulley Complete Unit | 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.
10 Water Pump parts for the 2012 International Lonestar come from 3 brands — US MOTOR WORKS, GMB and FVP. The "Popular" part is US MOTOR WORKS US932.
The Economy section: 3 options from FVP and US MOTOR WORKS. US MOTOR WORKS US932 is listed in this group.
Standard Replacement: 3 parts, from GMB. A representative part number is GMB 1962230.
4 further parts sit outside the graded sections, with the same engine-level match.
Water Pump Seal / O-Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 9045129 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Water Pump Seal O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.
This group shows a single part: DORMAN 9045129.
Buying Cooling System Parts for a 2012 International Lonestar
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 14.9L 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: Thermostat and Water Pump .
Frequently Asked Questions
How many cooling system parts fit the 2012 International Lonestar?
Our catalog currently lists 57 cooling system parts for the 2012 International Lonestar across 15 subcategories and 18 brands, covering the 14.9L L6 DIESEL Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2012 International Lonestar?
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 2012 International Lonestar 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 2012 International Lonestar?
Every part on this page is matched to the 14.9L 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 2012 International Lonestar
Cooling System Parts for Other International Lonestar Years
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