2018 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

17 Coolant / Antifreeze parts for the 2018 Nissan Pathfinder come from 7 brands — PRESTONE, PEAK, VALVOLINE and 4 other brands. The "Popular" part is FVP MV5050GAL.

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 4 options from FVP, PRESTONE, PEAK and 1 other brand — the catalog's value-priced group. FVP MV5050GAL 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 6 parts: built to original-equipment specification. A representative part number is VALVOLINE 861398.

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

2 Coolant Hose / Pipe Seal parts are listed for the 2018 Nissan Pathfinder, from ELRING and MAHLE / CLEVITE.

This group includes ELRING 524630 and 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 2018 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

3 Coolant Reservoir Cap parts are listed for the 2018 Nissan Pathfinder, from CALORSTAT, DORMAN and MOTORAD.

Listed part numbers: CALORSTAT RC0184, DORMAN 54245 and MOTORAD T152.

This table covers the Cooling Fan control modules. Read more

5 Cooling Fan Control Module parts are listed for the 2018 Nissan Pathfinder, from SKP, ACKOJA, BECK/ARNLEY and 2 other brands. SKP SK820025 carries the "Popular" badge.

This group includes SKP SK820025, ACKOJA A38790013 and BECK/ARNLEY 2030296 and the remaining parts above.

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

3 Cooling System Tester Adapter parts for the 2018 Nissan Pathfinder come from 2 brands — MOTORAD and GATES.

Part numbers include GATES 31428, MOTORAD 3121 and MOTORAD 3122.

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

9 Radiator parts for the 2018 Nissan Pathfinder come from 9 brands — CSF, KOYORAD, AGILITY and 6 other brands. The "Popular" part is CSF 3680.

This group includes CSF 3680, KOYORAD A13348 and AGILITY 8013348 and the remaining parts above.

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

4 Radiator Cap parts for the 2018 Nissan Pathfinder come from 3 brands — GATES, DORMAN and MOTORAD.

In the Locking Replacement grade, GATES 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 GATES 31534.

Standard Replacement: 3 parts, from DORMAN, GATES and MOTORAD. A representative part number is DORMAN 54237.

Listed part numbers: GATES 31534, DORMAN 54237 and GATES 31336, plus the other parts above.

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

8 Radiator Fan Assembly parts are listed for the 2018 Nissan Pathfinder, from DORMAN, SKP, GPD and 5 other brands. DORMAN 621586 carries the "Popular" badge.

Economy: 4 parts, from DORMAN, SKP, GPD and 1 other brand. A representative part number is DORMAN 621586.

The Standard Replacement section: 4 options from AGILITY, FOUR SEASONS, UAC and 1 other brand. AGILITY 6010299 is listed in this group.

This group includes DORMAN 621586, SKP SKCF23056 and GPD 2811932 and the remaining parts above.

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

6 Radiator Hose parts are listed for the 2018 Nissan Pathfinder, from DAYCO, GATES, ACDELCO and 1 other brand. DAYCO 72885 carries the "Popular" badge.

This group includes DAYCO 72885, GATES 24519 and ACDELCO 27233X and the remaining parts above.

This table covers the Radiator Mount bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

3 Radiator Mount Bushing parts are listed for the 2018 Nissan Pathfinder, from DORMAN, SKP and ULTRA-POWER.

Listed part numbers: DORMAN 926274 and SKP SK926274, plus the other parts above.

This table covers the Radiator Upper Air Baffle retainers and clips. Read more

One part is listed for the 2018 Nissan Pathfinder — DORMAN 963545.

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

11 Temperature Sender / Sensor parts for the 2018 Nissan Pathfinder come from 10 brands — WALKER PRODUCTS, GPD, HOLSTEIN and 7 other brands. The "Popular" part is BECK/ARNLEY 1580606.

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

The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 21191031 is listed in this group.

Standard Replacement: 8 parts, from BECK/ARNLEY, HELLA, NTK and 5 other brands. A representative part number is BECK/ARNLEY 1580606.

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

9 Thermostat parts are listed for the 2018 Nissan Pathfinder, from DORMAN, SKP, MOTORAD and 6 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: 7 options from MOTORAD, AISIN, BECK/ARNLEY and 4 other brands. MOTORAD 1016180 is listed in this group.

Part numbers include DORMAN 9025902, SKP SK9025902 and MOTORAD 1016180, 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

9 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2018 Nissan Pathfinder come from 6 brands — FEL-PRO, MAHLE / CLEVITE, VICTOR REINZ and 3 other brands. The "Popular" part is FEL-PRO 35620.

Part numbers include FEL-PRO 35620, MAHLE / CLEVITE C31681 and APEX AWO2080, among others listed above.

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

One part is listed for the 2018 Nissan Pathfinder — GATES CO35080.

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

5 Water Inlet Gasket parts for the 2018 Nissan Pathfinder come from 3 brands — APEX, FEL-PRO and MAHLE / CLEVITE. The "Popular" part is FEL-PRO 35622.

This group includes FEL-PRO 35622, APEX AWO2081 and APEX AWO2164 and the remaining parts above.

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

5 Water Pump parts are listed for the 2018 Nissan Pathfinder, from GMB, SKP, US MOTOR WORKS and 1 other brand. GATES 41223 carries the "Popular" badge.

Economy: 2 parts, from SKP and US MOTOR WORKS. A representative part number is SKP SK41223.

The Standard Replacement section: 3 options from GMB and GATES. GATES 41223 is listed in this group.

Listed part numbers: GATES 41223, SKP SK41223 and US MOTOR WORKS US8175, plus the other parts 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

3 Water Pump Gasket parts for the 2018 Nissan Pathfinder come from 3 brands — APEX, FEL-PRO and MAHLE / CLEVITE.

Part numbers include APEX AWP3237, FEL-PRO ES70894 and MAHLE / CLEVITE GS33404.