2018 Nissan Altima 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

16 Coolant / Antifreeze parts are listed for the 2018 Nissan Altima, from PRESTONE, PEAK, VALVOLINE and 4 other brands. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 2018 Altima.

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, FVP, PRESTONE, PEAK and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Premium section lists 5 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 6 options from BECK/ARNLEY, VALVOLINE, AISIN and 2 other brands — built to original-equipment specification. VALVOLINE 861398 is listed in this group.

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

4 Coolant Hose / Pipe Seal parts for the 2018 Nissan Altima come from 3 brands — FEL-PRO, APEX and MAHLE / CLEVITE. 1 part fits every engine; the other 3 are engine-specific.

Listed part numbers: APEX AWO2047, FEL-PRO 35445 and FEL-PRO 35026, plus the other parts above.

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

3 Coolant Pipe Gasket parts for the 2018 Nissan Altima come from 2 brands — FEL-PRO and APEX.

This group includes APEX AWO2218, FEL-PRO 35753 and FEL-PRO 35942.

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

5 Coolant Reservoir parts for the 2018 Nissan Altima come from 5 brands — DORMAN, GPD, SKP and 2 other brands. The "Popular" part is DORMAN 603780. Every part fits both the 2.5L L4 and the 3.5L V6.

Listed part numbers: DORMAN 603780, GPD 2411360 and SKP SK603780, plus the other 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

4 Coolant Reservoir Cap parts for the 2018 Nissan Altima come from 3 brands — MOTORAD, CALORSTAT and DORMAN. Every part fits both the 2.5L L4 and the 3.5L V6.

Listed part numbers: CALORSTAT RC0184, DORMAN 54245 and MOTORAD T20R, plus the other parts above.

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

4 Cooling System Tester Adapter parts are listed for the 2018 Nissan Altima, from MOTORAD, GATES and STANT. All of them fit every engine offered in the 2018 Altima.

Part numbers include GATES 31428, MOTORAD 3121 and MOTORAD 3122, among others listed above.

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 are listed for the 2018 Nissan Altima, from OSC, TYC, AGILITY and 6 other brands. OSC 2988 carries the "Popular" badge. 8 parts fit every engine; the other 1 is engine-specific.

This group includes OSC 2988 and AGILITY 8012988 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 are listed for the 2018 Nissan Altima, from SKP, CALORSTAT and GATES. All of them fit every engine offered in the 2018 Altima.

Part numbers include CALORSTAT RC0007, GATES 31564 and SKP SKT20R, among others listed above.

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

6 Radiator Fan Assembly parts for the 2018 Nissan Altima come from 6 brands — GPD, AGILITY, TYC and 3 other brands. The "Popular" part is AGILITY 6029144. Every part fits both the 2.5L L4 and the 3.5L V6.

The Economy section: 1 option from GPD. GPD 2811617 is listed in this group.

Standard Replacement: 5 parts, from AGILITY, TYC, FOUR SEASONS and 2 other brands. A representative part number is AGILITY 6029144.

Part numbers include AGILITY 6029144, GPD 2811617 and TYC 621660, among others listed 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

21 Radiator Hose parts for the 2018 Nissan Altima come from 4 brands — GATES, DAYCO, CONTINENTAL and 1 other brand. The "Popular" part is CONTINENTAL 66303. 4 parts fit every engine; the other 17 are engine-specific.

This table covers the brackets that mount the Radiator Mount. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

This group shows a single part: DORMAN 927246.

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 are listed for the 2018 Nissan Altima, from WALKER PRODUCTS, GPD, HOLSTEIN and 7 other brands. BECK/ARNLEY 1580606 carries the "Popular" badge. All of them fit every engine offered in the 2018 Altima.

Economy: 2 parts, from GPD and HOLSTEIN. A representative part number is GPD 1712547.

In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 21191031.

The Standard Replacement section: 8 options from BECK/ARNLEY, HELLA, NTK and 5 other brands. BECK/ARNLEY 1580606 is listed in this group.

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

19 Thermostat parts for the 2018 Nissan Altima come from 11 brands — MOTORAD, GATES, AISIN and 8 other brands. The "Popular" part is DORMAN 9025902.

The Economy section: 3 options from DORMAN, SKP and VEMO. DORMAN 9025902 is listed in this group.

In the Heavy Duty grade, GATES supplies 1 part: rated for severe service. A representative part number is GATES 33941S.

Premium: 1 part, from MOTORAD. A representative part number is MOTORAD 7427180.

Standard Replacement: 14 parts, from MOTORAD, GATES, AISIN and 5 other brands. A representative part number is GATES 33941.

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

18 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2018 Nissan Altima, from MAHLE / CLEVITE, VICTOR REINZ, FEL-PRO and 5 other brands. CALORSTAT J96 carries the "Popular" badge.

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

9 Thermostat Housing / Water Outlet parts for the 2018 Nissan Altima come from 4 brands — GATES, FOUR SEASONS, MOTORAD and 1 other brand. The "Popular" part is FOUR SEASONS 86301. 1 part fits every engine; the other 8 are engine-specific.

This group includes FOUR SEASONS 86301, MOTORAD CH2764 and BECK/ARNLEY 1470118 and the remaining parts above.

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

4 Water Inlet Gasket parts are listed for the 2018 Nissan Altima, from APEX, FEL-PRO and MAHLE / CLEVITE.

Listed part numbers: APEX AWO2081, APEX AWO2425 and FEL-PRO 35622, plus the other 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

16 Water Pump parts for the 2018 Nissan Altima come from 9 brands — US MOTOR WORKS, BECK/ARNLEY, FVP and 6 other brands. The "Popular" part is US MOTOR WORKS US8105.

The Economy section: 7 options from US MOTOR WORKS, BECK/ARNLEY, FVP and 1 other brand. US MOTOR WORKS US8105 is listed in this group.

Standard Replacement: 9 parts, from AISIN, GATES, DAYCO and 2 other brands. A representative part number is AISIN WPN709.

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

12 Water Pump Gasket parts are listed for the 2018 Nissan Altima, from FEL-PRO, MAHLE / CLEVITE, APEX and 2 other brands. FEL-PRO 35754 carries the "Popular" badge.