2021 Nissan Pathfinder 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

12 Coolant / Antifreeze parts for the 2021 Nissan Pathfinder come from 5 brands — PRESTONE, PEAK, VALVOLINE and 2 other brands. 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 3 options from PRESTONE, PEAK and VALVOLINE — 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 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, AISIN, PEAK and PENTOSIN supply 3 parts: built to original-equipment specification. A representative part number is AISIN ACB003.

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 Nissan Pathfinder — MAHLE / CLEVITE GS34113.

This table covers the gaskets that seal the Coolant Pipe. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2021 Nissan Pathfinder — FEL-PRO 35942.

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

2 Coolant Reservoir Cap parts are listed for the 2021 Nissan Pathfinder, from DORMAN and MOTORAD.

This group includes DORMAN 54245 and MOTORAD T152.

This table covers the Cooling Fan control modules. Read more

2 Cooling Fan Control Module parts are listed for the 2021 Nissan Pathfinder, from DORMAN and SKP.

Listed part numbers: DORMAN 921289 and SKP SK820025.

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 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

2 Radiator parts for the 2021 Nissan Pathfinder come from 2 brands — CSF and SPECTRA PREMIUM.

Listed part numbers: CSF 3680 and SPECTRA PREMIUM CU13348.

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 2021 Nissan Pathfinder come from 2 brands — DORMAN and MOTORAD.

Listed part numbers: DORMAN 54237 and MOTORAD T18R.

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

3 Radiator Fan Assembly parts are listed for the 2021 Nissan Pathfinder, from DORMAN, AGILITY and FOUR SEASONS.

Economy: 1 part, from DORMAN. A representative part number is DORMAN 621586.

The Standard Replacement section: 2 options from AGILITY and FOUR SEASONS. AGILITY 6010299 is listed in this group.

Part numbers include DORMAN 621586, AGILITY 6010299 and FOUR SEASONS 76333.

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

3 Temperature Sender / Sensor parts for the 2021 Nissan Pathfinder come from 3 brands — GPD, HOLSTEIN and STANDARD MOTOR PRODUCTS.

The Economy section: 2 options from GPD and HOLSTEIN. GPD 1712547 is listed in this group.

Standard Replacement: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS TX186.

Part numbers include GPD 1712547, HOLSTEIN 2CTS0057 and STANDARD MOTOR PRODUCTS TX186.

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

5 Thermostat parts are listed for the 2021 Nissan Pathfinder, from DORMAN, SKP, AISIN and 2 other brands. DORMAN 9025902 carries the "Popular" badge.

Economy: 2 parts, from DORMAN and SKP. A representative part number is DORMAN 9025902.

The Standard Replacement section: 3 options from AISIN, FOUR SEASONS and MOTORAD. AISIN THN021 is listed in this group.

Part numbers include DORMAN 9025902, SKP SK9025902 and AISIN THN021, among others listed above.

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

2 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2021 Nissan Pathfinder come from MAHLE / CLEVITE.

Listed part numbers: MAHLE / CLEVITE C31681 and MAHLE / CLEVITE C31680.

This table covers the gaskets that seal the Water Inlet. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

2 Water Inlet Gasket parts for the 2021 Nissan Pathfinder come from 2 brands — ELRING and MAHLE / CLEVITE.

Listed part numbers: ELRING 576720 and MAHLE / CLEVITE C31874.

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

2 Water Pump parts are listed for the 2021 Nissan Pathfinder, from FVP and GMB.

Part numbers include FVP 1502570, among others listed above.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

This group shows a single part: MAHLE / CLEVITE GS33404.