2018 Hyundai Sonata 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

13 Coolant / Antifreeze parts are listed for the 2018 Hyundai Sonata, from PRESTONE, PEAK, BECK/ARNLEY and 2 other brands. FVP MV5050GAL carries the "Popular" badge.

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 and PEAK supply 3 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 4 options from BECK/ARNLEY, AISIN and PEAK — built to original-equipment specification. AISIN ACG004 is listed in this group.

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

This group shows a single part: MAHLE / CLEVITE C32833.

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 for the 2018 Hyundai Sonata come from MOTORAD.

This group includes MOTORAD T154 and MOTORAD T158.

This table covers the Cooling Fan control modules. Read more

2 Cooling Fan Control Module parts for the 2018 Hyundai Sonata come from 2 brands — GATES and STANDARD MOTOR PRODUCTS.

Part numbers include GATES FCM156 and STANDARD MOTOR PRODUCTS CFM109.

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

3 Cooling System Tester Adapter parts are listed for the 2018 Hyundai Sonata, from GATES, MOTORAD and STANT.

Listed part numbers: GATES 31428, MOTORAD 3121 and STANT 12021.

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

3 Intercooler parts are listed for the 2018 Hyundai Sonata, from GPD and TYC.

Listed part numbers: GPD 2711401, GPD 2711396 and TYC 18086.

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

26 Radiator parts are listed for the 2018 Hyundai Sonata, from KOYORAD, CSF, AGILITY and 10 other brands. CSF 3753 carries the "Popular" badge. Economy and Standard Replacement are all represented, and Standard Replacement alone accounts for 22 parts.

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

6 Radiator Cap parts are listed for the 2018 Hyundai Sonata, from MOTORAD, CALORSTAT, SKP and 2 other brands. MOTORAD T16R carries the "Popular" badge.

The Locking Replacement section lists 2 options from CALORSTAT and MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. CALORSTAT RC0212 is listed in this group.

The Standard Replacement section: 4 options from MOTORAD, SKP, DORMAN and 1 other brand. MOTORAD T16R is listed in this group.

This group includes MOTORAD T16R, CALORSTAT RC0212 and MOTORAD ST16R and the remaining parts above.

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

7 Radiator Fan Assembly parts for the 2018 Hyundai Sonata come from 6 brands — UAC, GPD, TECHPRO and 3 other brands. The "Popular" part is FOUR SEASONS 75983.

The Economy section: 2 options from GPD and TECHPRO. GPD 2811953 is listed in this group.

Standard Replacement: 5 parts, from UAC, FOUR SEASONS, TYC and 1 other brand. A representative part number is FOUR SEASONS 75983.

This group includes FOUR SEASONS 75983, GPD 2811953 and TECHPRO HY3115160 and the remaining parts above.

This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

One part is listed for the 2018 Hyundai Sonata — ACKOJA A52010026.

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

5 Radiator Hose parts for the 2018 Hyundai Sonata come from 3 brands — CONTINENTAL, GATES and HYUNDAI.

Listed part numbers: CONTINENTAL 67374, CONTINENTAL 66691 and GATES 24821, plus the other parts above.

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

23 Temperature Sender / Sensor parts are listed for the 2018 Hyundai Sonata, from STANDARD MOTOR PRODUCTS, HOLSTEIN, GPD and 10 other brands. HOLSTEIN 2CTS0091 carries the "Popular" badge.

Economy: 7 parts, from HOLSTEIN, GPD, UNITED MOTOR PRODUCTS and 1 other brand. A representative part number is HOLSTEIN 2CTS0091.

The Standard Replacement section: 16 options from BECK/ARNLEY, STANDARD MOTOR PRODUCTS, DELPHI and 7 other brands. BECK/ARNLEY 1581695 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 Hyundai Sonata come from 9 brands — BECK/ARNLEY, MOTORAD, AISIN and 6 other brands. The "Popular" part is AISIN THYK805.

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

13 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2018 Hyundai Sonata, from FEL-PRO, APEX, GATES and 3 other brands. FEL-PRO 35921 carries the "Popular" badge.

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

14 Thermostat Housing / Water Outlet parts for the 2018 Hyundai Sonata come from 5 brands — FOUR SEASONS, GATES, MOTORAD and 2 other brands. The "Popular" part is FOUR SEASONS 86288.

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 are listed for the 2018 Hyundai Sonata, from APEX and FEL-PRO.

This group includes APEX AWO2093 and FEL-PRO 35368.

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

23 Water Pump parts for the 2018 Hyundai Sonata come from 12 brands — BECK/ARNLEY, AISIN, DAYCO and 9 other brands. The "Popular" part is US MOTOR WORKS US6247.

The Economy section: 10 options from BECK/ARNLEY, US MOTOR WORKS, FVP and 2 other brands. US MOTOR WORKS US6247 is listed in this group.

Standard Replacement: 13 parts, from AISIN, DAYCO, GATES and 4 other brands. A representative part number is ACDELCO 252981.

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

11 Water Pump Gasket parts are listed for the 2018 Hyundai Sonata, from FEL-PRO, APEX, ELRING and 3 other brands. FEL-PRO 35813 carries the "Popular" badge.

This table covers the Water Pump Seal O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

2 Water Pump Seal / O-Ring parts for the 2018 Hyundai Sonata come from 2 brands — APEX and FEL-PRO.

This group includes APEX AWP3203 and FEL-PRO ES72872.