2021 Infiniti Q50 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

15 Coolant / Antifreeze parts are listed for the 2021 Infiniti Q50, from PRESTONE, PEAK, VALVOLINE and 4 other brands. FVP MV5050GAL carries the "Popular" badge. 7 parts fit every engine; the other 8 are engine-specific.

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, VALVOLINE, 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 5 options from AISIN, VALVOLINE, BECK/ARNLEY and 2 other brands — built to original-equipment specification. AISIN ACB003 is listed in this group.

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

This group shows a single part: MOTORAD T20R.

This table covers the Cooling Fan control modules. Read more

4 Cooling Fan Control Module parts for the 2021 Infiniti Q50 come from 4 brands — ACKOJA, DORMAN, GATES and 1 other brand.

Listed part numbers: ACKOJA A38790014, DORMAN 921291 and GATES FCM130, plus the other parts above.

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

MOTORAD supplies both parts for the 2021 Infiniti Q50.

Part numbers include 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

7 Radiator parts are listed for the 2021 Infiniti Q50, from DENSO, OSC, TYC and 2 other brands. DENSO 2219580 carries the "Popular" badge.

This group includes DENSO 2219580, TYC 13630 and CSF 4027 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

3 Radiator Cap parts are listed for the 2021 Infiniti Q50, from CALORSTAT, MOTORAD and SKP.

Listed part numbers: CALORSTAT RC0050, MOTORAD T3R and SKP SKT20R.

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

3 Radiator Fan Assembly parts for the 2021 Infiniti Q50 come from 2 brands — UAC and TECHPRO. 2 parts fit every engine; the other 1 is engine-specific.

The Economy section: 1 option from TECHPRO. TECHPRO IN3115114 is listed in this group.

Standard Replacement: 2 parts, from UAC. A representative part number is UAC FA50588C.

Listed part numbers: TECHPRO IN3115114, UAC FA50588C and UAC FA50778C.

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

2 Radiator Hose parts for the 2021 Infiniti Q50 come from GATES.

Listed part numbers: GATES 51527 and GATES 51528.

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

9 Temperature Sender / Sensor parts are listed for the 2021 Infiniti Q50, from WALKER PRODUCTS, GPD, HOLSTEIN and 5 other brands. BECK/ARNLEY 1580606 carries the "Popular" badge.

Economy: 2 parts, from GPD and HOLSTEIN. A representative part number is GPD 1712002.

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: 6 options from BECK/ARNLEY, HELLA, DELPHI and 3 other brands. BECK/ARNLEY 1580606 is listed in this group.

Part numbers include BECK/ARNLEY 1580606, GPD 1712002 and HOLSTEIN 2CTS0026, 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 for the 2021 Infiniti Q50 come from 2 brands — FOUR SEASONS and MOTORAD.

Listed part numbers: FOUR SEASONS 12208 and MOTORAD 1220180.

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

This group shows a single part: MOTORAD CH3160.

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 for the 2021 Infiniti Q50 come from 2 brands — FVP and GMB.

Listed part numbers: FVP 1502560, plus the other parts above.