2021 Mitsubishi Outlander 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

17 Coolant / Antifreeze parts for the 2021 Mitsubishi Outlander come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is PRESTONE AF3100. 12 parts fit every engine; the other 5 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 3 options from PRESTONE, VALVOLINE and PEAK — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.

In the Heavy Duty grade, PRESTONE supplies 1 part: rated for severe service. A representative part number is PRESTONE AFC12100.

In the Premium grade, PRESTONE and PEAK supply 5 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, BECK/ARNLEY, VALVOLINE, AISIN and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is BECK/ARNLEY 2521501.

This table covers the seals at the Coolant Hose / Pipe. 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

One part is listed for the 2021 Mitsubishi Outlander — AJUSA 16060600.

This table covers the Coolant Hose Connector flanges. Read more

This group shows a single part: FOUR SEASONS 86377.

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

4 Coolant Reservoir Cap parts are listed for the 2021 Mitsubishi Outlander, from CALORSTAT, DORMAN and MOTORAD. 2 parts fit every engine; the other 2 are engine-specific.

This group includes CALORSTAT RC0206, CALORSTAT RC0016 and DORMAN 54242 and the remaining parts above.

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

This group shows a single part: MOTORAD 3121.

This table covers the Inverter coolers. Typical signs include overheated fluid, a leak at the fittings, or mixed fluids in the reservoir. Flush the lines when you replace a cooler. Read more

One part is listed for the 2021 Mitsubishi Outlander — TECHPRO MI3011100.

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

This group shows a single part: SPECTRA PREMIUM CU13470.

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

5 Radiator Cap parts for the 2021 Mitsubishi Outlander come from 4 brands — MOTORAD, CALORSTAT, DORMAN and 1 other brand. The "Popular" part is MOTORAD T16R. 3 parts fit every engine; the other 2 are engine-specific.

In the Locking Replacement grade, MOTORAD supplies 1 part: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is MOTORAD ST16R.

Standard Replacement: 4 parts, from MOTORAD, CALORSTAT, DORMAN and 1 other brand. A representative part number is MOTORAD T16R.

This group includes MOTORAD T16R, MOTORAD ST16R and CALORSTAT RC0027 and the remaining parts above.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

One part is listed for the 2021 Mitsubishi Outlander — GPD 2812168.

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

CONTINENTAL supplies the 3 Radiator Hose parts for the 2021 Mitsubishi Outlander.

Listed part numbers: CONTINENTAL 66868, CONTINENTAL 66869 and CONTINENTAL 66867.

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

4 Temperature Sender / Sensor parts for the 2021 Mitsubishi Outlander come from 4 brands — CALORSTAT, GPD, HOLSTEIN and 1 other brand.

The Economy section: 3 options from CALORSTAT, GPD and HOLSTEIN. CALORSTAT WS3041 is listed in this group.

Standard Replacement: 1 part, from WELLS. A representative part number is WELLS 5S15298.

Part numbers include CALORSTAT WS3041, GPD 1712618 and HOLSTEIN 2CTS0426, 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

2 Thermostat parts are listed for the 2021 Mitsubishi Outlander, from CALORSTAT and MOTORAD. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include CALORSTAT TH658787J and MOTORAD 762189.

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

5 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2021 Mitsubishi Outlander come from 3 brands — FEL-PRO, APEX and AJUSA. The "Popular" part is FEL-PRO 35877. 1 part fits every engine; the other 4 are engine-specific.

Listed part numbers: FEL-PRO 35877, AJUSA 01207100 and APEX AWO2307, plus the other parts above.

This table covers the housings and outlets the thermostat sits in. Read more

One part is listed for the 2021 Mitsubishi Outlander — MOTORAD CH3076.