This page lists 114 cooling system parts for the 2011 International Prostar, across 18 part types, covering all 5 engine options (10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged and 15.0L DIESEL). Every part shows its brand, manufacturer part number and fitment notes.
On the 2011 International Prostar, 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. 59 parts of the 114 listed are Thermostat (28 parts), Water Pump (17 parts) and Coolant / Antifreeze (14 parts). The other 15 part types cover the remaining 55 parts.
The 2011 International Prostar was sold with 5 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
24 brands supply cooling system parts for the 2011 International Prostar, led by GATES (15 parts), MOTORAD (15 parts) and GPD (11 parts), plus 21 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 2011 International Prostar. 19 parts have it, including PRESTONE AF3100 (Coolant / Antifreeze) and WIX 24113 (Coolant Filter). 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: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | ZXG051 | 🇺🇸 US 🇨🇦 CA | G05 Yellow1 Gallon | View on Amazon |
| PEAK Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | FCA1GAL | 🇺🇸 US 🇨🇦 CA | Fleet Charge1 Gallon | View on Amazon |
| PEAK Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | FXA1GAL | 🇺🇸 US 🇨🇦 CA | Final Charge Global1 Gallon | View on Amazon |
| PEAK Fits: 14.9L L6 DIESEL Turbocharged | FNA1GAL | 🇺🇸 US 🇨🇦 CA | Final Charge1 Gallon | View on Amazon |
| PRESTONE Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | AFC10000 | 🇺🇸 US 🇨🇦 CA | Command ESi PrechargedPurple | View on Amazon |
| PRESTONE Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | AFC13000 | 🇺🇸 US 🇨🇦 CA | Command COR-Guard Nitrite Free-Noat Extended Life CoolantRed | View on Amazon |
| PRESTONE Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | AFC11000 | 🇺🇸 US 🇨🇦 CA | Command Nitrited Extended Life CoolantRed N-OAT | View on Amazon |
| PRESTONE Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | AFC12100 | 🇺🇸 US 🇨🇦 CA | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
| VALVOLINE Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | ZXED1 | 🇺🇸 US 🇨🇦 CA | HD Extended Life Red1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PRESTONE Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 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.
14 Coolant / Antifreeze parts are listed for the 2011 International Prostar, from PRESTONE, VALVOLINE 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 and VALVOLINE supply 2 parts: the catalog's value-priced group. A representative part number is PRESTONE AF3100.
The Heavy Duty section lists 9 options from PRESTONE, PEAK and VALVOLINE — 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.
Coolant Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WIX Popular Fits: 14.9L L6 DIESEL Turbocharged | 24113 | 🇺🇸 US | Coolant Spin-On Filter | View on Amazon |
| WIX Popular Fits: 14.9L L6 DIESEL Turbocharged | 24112 | 🇺🇸 US | Coolant Spin-On Filter | View on Amazon |
| DONALDSON Fits: 14.9L L6 DIESEL Turbocharged | P550867 | 🇺🇸 US 🇨🇦 CA | Outer Diameter: 93 mm (3.66")Length: 147 mm (5.79") | View on Amazon |
| DONALDSON Fits: 14.9L L6 DIESEL Turbocharged | P550866 | 🇺🇸 US 🇨🇦 CA | Coolant filter, spin-On SCA plus | View on Amazon |
| FAMOUS BRAND Fits: 14.9L L6 DIESEL Turbocharged, 15.0L DIESEL | 89113 | 🇺🇸 US 🇨🇦 CA | CoolantOE Number : WF2127 | View on Amazon |
| HASTINGS / BALDWIN Fits: 12.4L L6 DIESEL Turbocharged | WC16 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HASTINGS / BALDWIN Fits: 14.9L L6 DIESEL Turbocharged | WC23 | 🇺🇸 US 🇨🇦 CA | Spin-On | View on Amazon |
| HASTINGS / BALDWIN Fits: 14.9L L6 DIESEL Turbocharged | WC11 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WIX Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | 24070 | 🇺🇸 US | Height: 5.214 InCoolant 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.
9 Coolant Filter parts are listed for the 2011 International Prostar, from WIX, HASTINGS / BALDWIN, DONALDSON and 1 other brand. WIX 24113 carries the "Popular" badge.
Part numbers include WIX 24113, WIX 24112 and DONALDSON P550867, among others listed above.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 14.9L L6 DIESEL Turbocharged | 28436 | 🇺🇸 US 🇨🇦 CA | Straight (Heavy-Duty)3/8" | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
One part is listed for the 2011 International Prostar — GATES 28436.
Coolant Level Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 12.5L DIESEL | 9047363 | 🇺🇸 US | For Gauge Cluster | View on Amazon |
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.
One part is listed for the 2011 International Prostar — DORMAN 9047363.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 12.4L L6 DIESEL Turbocharged | 6035247 | 🇺🇸 US 🇨🇦 CA | SURGE TANK | View on Amazon |
| DORMAN Fits: 14.9L L6 DIESEL Turbocharged | 6035105 | 🇺🇸 US 🇨🇦 CA | with 3 Ports | View on Amazon |
| GPD Fits: 10.5L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 2421012 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD Fits: 12.4L L6 DIESEL Turbocharged | 2421013 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 14.9L L6 DIESEL Turbocharged | SK6035105 | 🇺🇸 US 🇨🇦 CA | with 3 Ports | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
5 Coolant Reservoir parts for the 2011 International Prostar come from 3 brands — DORMAN, GPD and SKP.
Part numbers include DORMAN 6035247, DORMAN 6035105 and GPD 2421012, among others listed above.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 9025102 | 🇺🇸 US 🇨🇦 CA | with 15 Lb. Cap | View on Amazon |
| MOTORAD Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 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 2011 International Prostar 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 Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 31379 | 🇺🇸 US 🇨🇦 CA | Cooling System PressureRadiator Cap | View on Amazon |
| GATES Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 31410 | 🇺🇸 US 🇨🇦 CA | Cooling System Pressure | View on Amazon |
| MOTORAD Fits: 12.4L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged | 3132 | 🇺🇸 US 🇨🇦 CA | StandardRadiator Cap Adapter | View on Amazon |
| MOTORAD Fits: 12.4L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged | 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 2011 International Prostar, from GATES and MOTORAD.
This group includes GATES 31379, GATES 31410 and MOTORAD 3132 and the remaining parts above.
Hose Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 9044000 | 🇺🇸 US 🇨🇦 CA | 1.75" DiameterCoolant | View on Amazon |
This table covers the Hose clamps.
One part is listed for the 2011 International Prostar — DORMAN 9044000.
Intercooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM Popular Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 44013529 | 🇺🇸 US 🇨🇦 CA | with 39.625 IN X 13.125 IN X 4.125 IN Corewith 4 IN Inlet | View on Amazon |
| GPD Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 2711500 | 🇺🇸 US 🇨🇦 CA | with 4 IN Inletwith 4 IN Outlet | View on Amazon |
| GPD Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 2711615 | 🇺🇸 US 🇨🇦 CA | with Titanx ModelOEM Quality | View on Amazon |
| GPD Fits: 14.9L L6 DIESEL Turbocharged | 2711445 | 🇺🇸 US 🇨🇦 CA | with 4 IN Inletwith 4 IN Outlets | View on Amazon |
| OSC Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | CAC7164 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| OSC Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | CAC7193 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the intercoolers that cool turbo or supercharger charge air.
6 Intercooler parts are listed for the 2011 International Prostar, from GPD, OSC and SPECTRA PREMIUM. SPECTRA PREMIUM 44013529 carries the "Popular" badge.
Listed part numbers: SPECTRA PREMIUM 44013529, GPD 2711500 and GPD 2711615, plus the other parts above.
Intercooler Air Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 12.4L L6 DIESEL Turbocharged | 26200 | 🇺🇸 US 🇨🇦 CA | Turbocharger Hose (Ring-Retained)Straight Hose | View on Amazon |
This table covers the Intercooler Air Hose pipes.
One part is listed for the 2011 International Prostar — GATES 26200.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | 9282762 | 🇺🇸 US 🇨🇦 CA | Core 40-1/8 X 27-3/8with Original Equipment (OE) # 2591554C91 | View on Amazon |
| GPD Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | 9282768 | 🇺🇸 US 🇨🇦 CA | Low Temperaturewith Titanx Model | View on Amazon |
| GPD Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | 9282771 | 🇺🇸 US 🇨🇦 CA | High Temperaturewith Titanx Model | View on Amazon |
| GPD Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | 9282777 | 🇺🇸 US 🇨🇦 CA | High TemperatureModine Made | View on Amazon |
| GPD Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | 9282778 | 🇺🇸 US 🇨🇦 CA | Low Temperature3 Section Unit | View on Amazon |
| ULTRA-POWER Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 20013547 | 🇺🇸 US 🇨🇦 CA | Fits Frontwith Transmission Oil Cooler | View on Amazon |
Premium (All Aluminum Construction)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL Popular Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 3000805AA | 🇺🇸 US 🇨🇦 CA | All Aluminum | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AGILITY Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 8070105 | 🇺🇸 US 🇨🇦 CA | HD | View on Amazon |
| SPECTRA PREMIUM Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 20013561P | 🇺🇸 US 🇨🇦 CA | Aluminum Core with Plastic Tanks | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL Popular Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 3000801 | 🇺🇸 US 🇨🇦 CA | LTR Radiator Assembly | View on Amazon |
| ULTRA-POWER Fits: 15.0L DIESEL | 20013547 | 🇺🇸 US 🇨🇦 CA | Fits Frontwith Transmission Oil Cooler | 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.
11 Radiator parts are listed for the 2011 International Prostar, from GPD, ULTRA-POWER, LILAND GLOBAL and 2 other brands. LILAND GLOBAL 3000805AA carries the "Popular" badge.
Economy: 6 parts, from GPD and ULTRA-POWER. A representative part number is GPD 9282762.
In the Premium (All Aluminum Construction) grade, LILAND GLOBAL supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is LILAND GLOBAL 3000805AA.
The Standard Replacement section lists 2 options from AGILITY and SPECTRA PREMIUM — built to original-equipment specification. AGILITY 8070105 is listed in this group.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
Radiator Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | 31567 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD Fits: 12.4L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged | 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 2011 International Prostar, from GATES and MOTORAD.
Part numbers include GATES 31567 and MOTORAD 100410.
Radiator Hose
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 14.9L L6 DIESEL Turbocharged | 21891 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
Universal Hose (Straight, Bulk)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Fits: 14.9L L6 DIESEL Turbocharged | 57040 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Straight | View on Amazon |
| GATES Fits: 14.9L L6 DIESEL Turbocharged | 24440 | 🇺🇸 US 🇨🇦 CA | Straight (Heavy-Duty 4-Ply)2.5" (75 PSI) | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Fits: 12.4L L6 DIESEL Turbocharged | 60832 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| CONTINENTAL Fits: 12.4L L6 DIESEL Turbocharged | 62631 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| DAYCO Fits: 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL | 71812 | 🇺🇸 US 🇨🇦 CA | Curved or Molded Hose or Straight Hose | View on Amazon |
| DAYCO Fits: 12.4L L6 DIESEL Turbocharged | 71813 | 🇺🇸 US 🇨🇦 CA | 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.
7 Radiator Hose parts for the 2011 International Prostar come from 3 brands — CONTINENTAL, GATES and DAYCO.
Standard Replacement: 1 part, from GATES. A representative part number is GATES 21891.
In the Universal Hose (Straight, Bulk) grade, CONTINENTAL and GATES supply 2 parts: 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.
4 further parts sit outside the graded sections, with the same engine-level match.
Listed part numbers: GATES 21891, CONTINENTAL 57040 and GATES 24440, plus the other parts above.
Temperature Sender / Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 14.9L L6 DIESEL Turbocharged | 9047137 | 🇺🇸 US 🇨🇦 CA | ID No. 4088832 | View on Amazon |
| GPD Fits: 14.9L L6 DIESEL Turbocharged | 1814588 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender.
2 Temperature Sender / Sensor parts are listed for the 2011 International Prostar, from DORMAN and GPD.
This group includes DORMAN 9047137 and GPD 1814588.
Thermostat
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 12.5L DIESEL | 33579 | 🇺🇸 US | Heavy-Duty | View on Amazon |
| GATES Popular Fits: 14.9L L6 DIESEL Turbocharged | 34148 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty | View on Amazon |
| GATES Fits: 12.5L DIESEL | 33578 | 🇺🇸 US | Heavy-Duty | View on Amazon |
| GATES Fits: 12.5L DIESEL | 33576 | 🇺🇸 US | Heavy-Duty | View on Amazon |
| GATES Fits: 12.5L DIESEL | 33577 | 🇺🇸 US | Heavy-Duty | View on Amazon |
| GATES Fits: 14.9L L6 DIESEL Turbocharged | 34146 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty | View on Amazon |
| GATES Fits: 14.9L L6 DIESEL Turbocharged | 34149 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Popular Fits: 14.9L L6 DIESEL Turbocharged, 12.5L DIESEL | THS1695876 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
| CALORSTAT Popular Fits: 14.9L L6 DIESEL Turbocharged, 12.5L DIESEL | THS1910488 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
| MOTORAD Popular Fits: 12.5L DIESEL | 880090 | 🇺🇸 US | Engine Coolant Thermostat Quantity: 1Includes Seal | View on Amazon |
| MOTORAD Popular Fits: 12.5L DIESEL | 880080 | 🇺🇸 US | Includes Seal | View on Amazon |
| CALORSTAT Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | THS1910582 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | THS1910588 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
| CALORSTAT Fits: 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged | THS1680171 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| MOTORAD Fits: 12.5L DIESEL | 880060 | 🇺🇸 US | Includes Seal | View on Amazon |
| MOTORAD Fits: 12.5L DIESEL | 880070 | 🇺🇸 US | Includes Seal | View on Amazon |
| MOTORAD Fits: 12.5L DIESEL | 404790 | 🇺🇸 US | Includes Seal | View on Amazon |
| MOTORAD Fits: 14.9L L6 DIESEL Turbocharged | 15199 | 🇺🇸 US 🇨🇦 CA | Heavy Duty190 Degrees F, Includes Seal, For Engine Coolant System | View on Amazon |
| MOTORAD Fits: 14.9L L6 DIESEL Turbocharged | 406160 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| MOTORAD Fits: 14.9L L6 DIESEL Turbocharged | 406190 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| MOTORAD Fits: 14.9L L6 DIESEL Turbocharged | 407825 | 🇺🇸 US 🇨🇦 CA | 225 Degrees Ffor Engine Oil Cooler System | View on Amazon |
| MOTORAD Fits: 14.9L L6 DIESEL Turbocharged | 406180 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Popular Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | THS1695876 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
| CALORSTAT Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | THS1910582 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | THS1910588 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
| CALORSTAT Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | THS1680171 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: 10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged | THS1910488 | 🇺🇸 US 🇨🇦 CA | Does not include seal | View on Amazon |
| MOTORAD Fits: 15.0L DIESEL | 15199 | 🇺🇸 US 🇨🇦 CA | Heavy Duty190 Degrees F, Includes Seal, For Engine Coolant System | 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.
28 Thermostat parts for the 2011 International Prostar come from 3 brands — MOTORAD, CALORSTAT and GATES. The "Popular" part is GATES 33579. They are grouped as Heavy Duty and Standard Replacement, with Standard Replacement the largest group at 15 parts from MOTORAD and CALORSTAT.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYTON Fits: 14.9L L6 DIESEL Turbocharged | 6745008G | 🇺🇸 US 🇨🇦 CA | Housing to Cylinder Head | View on Amazon |
| DAYTON Fits: 14.9L L6 DIESEL Turbocharged | 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 2011 International Prostar.
This group includes DAYTON 6745008G and DAYTON 6745003G.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS Popular Fits: 14.9L L6 DIESEL Turbocharged | US932 | 🇺🇸 US 🇨🇦 CA | ISX, ISZ12 Groove Pulley Complete Unit | View on Amazon |
| FVP Fits: 12.5L DIESEL | US95 | 🇺🇸 US | View on Amazon | |
| FVP Fits: 12.5L DIESEL | US952 | 🇺🇸 US | Includes Back Housing | View on Amazon |
| FVP Fits: 14.9L L6 DIESEL Turbocharged | US932 | 🇺🇸 US 🇨🇦 CA | ISX, ISZ (12 Groove Pulley) Complete Unit (Short Bottom Outlet) | View on Amazon |
| FVP Fits: 14.9L L6 DIESEL Turbocharged | US6344 | 🇺🇸 US 🇨🇦 CA | ISX (12 Groove Pulley) | View on Amazon |
High Volume / Pressure
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 14.9L L6 DIESEL Turbocharged | 45052HD | 🇺🇸 US 🇨🇦 CA | Water Pump (Heavy-Duty) | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GMB Popular Fits: 14.9L L6 DIESEL Turbocharged | 1962230 | 🇺🇸 US 🇨🇦 CA | without Water Pump HousingTwo-Piece Pump | View on Amazon |
| GMB Fits: 12.5L DIESEL | 1962510 | 🇺🇸 US | View on Amazon | |
| GMB Fits: 14.9L L6 DIESEL Turbocharged | 1962230AH | 🇺🇸 US 🇨🇦 CA | Two-Piece Pumpwith Water Pump Housing | View on Amazon |
| GMB Fits: 14.9L L6 DIESEL Turbocharged | 1961020 | 🇺🇸 US 🇨🇦 CA | One-Piece Pump | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS Popular Fits: 12.5L DIESEL | US95 | 🇺🇸 US | View on Amazon | |
| FVP Fits: 12.5L DIESEL | 1962510 | 🇺🇸 US | View on Amazon | |
| US MOTOR WORKS Fits: 12.5L DIESEL | US952 | 🇺🇸 US | Includes Back Housing | View on Amazon |
| US MOTOR WORKS Fits: 14.9L L6 DIESEL Turbocharged | US93 | 🇺🇸 US 🇨🇦 CA | ISX, ISZ12 Groove Pulley Pump Only | View on Amazon |
| US MOTOR WORKS Fits: 14.9L L6 DIESEL Turbocharged | US6151 | 🇺🇸 US 🇨🇦 CA | ISX10 Groove Pulley | View on Amazon |
| US MOTOR WORKS Fits: 14.9L L6 DIESEL Turbocharged | US6344 | 🇺🇸 US 🇨🇦 CA | ISX12 Groove Pulley | View on Amazon |
| US MOTOR WORKS Fits: 14.9L L6 DIESEL Turbocharged | 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.
17 Water Pump parts for the 2011 International Prostar come from 4 brands — US MOTOR WORKS, FVP, GMB and 1 other brand. The "Popular" part is US MOTOR WORKS US932.
The Economy section: 5 options from FVP and US MOTOR WORKS. US MOTOR WORKS US932 is listed in this group.
The High Volume / Pressure section lists 1 option from GATES — grouped under the catalog's "High Volume / Pressure" designation — the notes column spells out what sets them apart. GATES 45052HD is listed in this group.
Standard Replacement: 4 parts, from GMB. A representative part number is GMB 1962230.
7 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 Fits: 14.9L L6 DIESEL Turbocharged | 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 2011 International Prostar
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 Water Pump .
Frequently Asked Questions
How many cooling system parts fit the 2011 International Prostar?
Our catalog currently lists 114 cooling system parts for the 2011 International Prostar across 18 subcategories and 24 brands, covering all 5 engine options (10.5L L6 DIESEL Turbocharged, 12.4L L6 DIESEL Turbocharged, 12.5L DIESEL, 14.9L L6 DIESEL Turbocharged and 15.0L DIESEL). Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2011 International Prostar 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 2011 International Prostar?
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 2011 International Prostar 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 2011 International Prostar?
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 2011 International Prostar
Cooling System Parts for Other International Prostar Years
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