2009 International Workstar 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

15 Coolant / Antifreeze parts for the 2009 International Workstar come from 3 brands — PRESTONE, VALVOLINE and PEAK. The "Popular" part is PRESTONE AF3100. 12 parts fit every engine; the other 3 are engine-specific.

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 2 options from PRESTONE and VALVOLINE — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.

In the Heavy Duty grade, VALVOLINE, PRESTONE and PEAK supply 10 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.

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

2 Coolant Filter parts for the 2009 International Workstar come from HASTINGS / BALDWIN.

This group includes HASTINGS / BALDWIN WC16 and HASTINGS / BALDWIN B5090.

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

This group shows a single part: DORMAN 9047363.

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

7 Coolant Reservoir parts are listed for the 2009 International Workstar, from GPD and DORMAN. 1 part fits every engine; the other 6 are engine-specific.

This group includes DORMAN 6035132, DORMAN 6035107 and GPD 2421031 and the remaining 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

One part is listed for the 2009 International Workstar — STANT 10270.

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

4 Cooling System Tester Adapter parts for the 2009 International Workstar come from 2 brands — GATES and MOTORAD.

This group includes GATES 31379, GATES 31410 and MOTORAD 3132 and the remaining parts above.

This table covers the Hose clamps. Read more

This group shows a single part: DORMAN 9044000.

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

6 Intercooler parts for the 2009 International Workstar come from 2 brands — GPD and SPECTRA PREMIUM. The "Popular" part is GPD 2711478.

Listed part numbers: GPD 2711478, GPD 2711613 and GPD 2711614, plus the other parts above.

This table covers the Intercooler Air Hose pipes. Read more

3 Intercooler Air Hose / Pipe parts for the 2009 International Workstar come from 2 brands — CONTINENTAL and GATES.

Listed part numbers: CONTINENTAL 57513, CONTINENTAL 57514 and GATES 26203.

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

10 Radiator parts for the 2009 International Workstar come from 3 brands — GPD, SPECTRA PREMIUM and OSC. The "Popular" part is SPECTRA PREMIUM 20013549. 3 parts fit every engine; the other 7 are engine-specific.

The Economy section: 5 options from GPD. GPD 9282753 is listed in this group.

In the Standard Replacement grade, SPECTRA PREMIUM and OSC supply 5 parts: built to original-equipment specification. A representative part number is SPECTRA PREMIUM 20013549.

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. Read more

2 Radiator Cap parts for the 2009 International Workstar come from 2 brands — GATES and MOTORAD.

Listed part numbers: GATES 31567 and MOTORAD 100410.

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

15 Radiator Hose parts are listed for the 2009 International Workstar, from DAYCO, GATES and CONTINENTAL. DAYCO 71813 carries the "Popular" badge.

The Standard Replacement section: 7 options from DAYCO, GATES and CONTINENTAL. DAYCO 71813 is listed in this group.

The Universal Hose (Straight, Bulk) section lists 2 options from CONTINENTAL and GATES — grouped under the catalog's "Universal Hose (Straight, Bulk)" designation — the notes column spells out what sets them apart. CONTINENTAL 57040 is listed in this group.

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

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. Read more

5 Temperature Sender / Sensor parts for the 2009 International Workstar come from 2 brands — DORMAN and GPD.

Listed part numbers: DORMAN 9047137, DORMAN 9047043 and DORMAN 9047549, plus the other parts 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

31 Thermostat parts are listed for the 2009 International Workstar, from MOTORAD, CALORSTAT, GATES and 1 other brand. GATES 34148 carries the "Popular" badge. Heavy Duty and Standard Replacement are all represented, and Standard Replacement alone accounts for 17 parts.

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

17 Water Pump parts are listed for the 2009 International Workstar, from US MOTOR WORKS, FVP, DAYCO and 3 other brands. GATES 45055HD carries the "Popular" badge.

Economy: 6 parts, from FVP, US MOTOR WORKS and SKP. A representative part number is FVP US95.

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 45055HD.

The Standard Replacement section: 4 options from GMB and DAYCO. GMB 1962240 is listed in this group.

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