2023 Mazda CX-50 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 2023 Mazda CX-50, from PRESTONE, VALVOLINE, BECK/ARNLEY and 2 other brands. PRESTONE AF3100 carries the "Popular" badge. All of them fit every engine offered in the 2023 CX-50.

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, PRESTONE and VALVOLINE supply 2 parts: the catalog's value-priced group. A representative part number is PRESTONE AF3100.

The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.

The Premium section lists 3 options from PRESTONE — 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 VALVOLINE, BECK/ARNLEY, AISIN and 1 other brand — 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

This group shows a single part: MAHLE / CLEVITE C33644.

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 T16R.

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

MOTORAD supplies both parts for the 2023 Mazda CX-50. All of them fit every engine offered in the 2023 CX-50.

Listed part numbers: MOTORAD 3121 and MOTORAD 3122.

This table covers the gaskets that seal the Intercooler. 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 GS34075.

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 are listed for the 2023 Mazda CX-50, from FVP and KOYORAD. All of them fit every engine offered in the 2023 CX-50.

This group includes FVP RAD13972 and KOYORAD A13972.

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

One part is listed for the 2023 Mazda CX-50 — MOTORAD T16R.

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

5 Temperature Sender / Sensor parts are listed for the 2023 Mazda CX-50, from GPD, HOLSTEIN, DELPHI and 2 other brands. DELPHI TS10289 carries the "Popular" badge. All of them fit every engine offered in the 2023 CX-50.

Economy: 2 parts, from GPD and HOLSTEIN. A representative part number is GPD 1712514.

The Standard Replacement section: 3 options from DELPHI, WALKER PRODUCTS and WELLS. DELPHI TS10289 is listed in this group.

Part numbers include DELPHI TS10289, GPD 1712514 and HOLSTEIN 2CTS0413, 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

8 Thermostat parts for the 2023 Mazda CX-50 come from 4 brands — MOTORAD, AISIN, CALORSTAT and 1 other brand.

Premium: 1 part, from MOTORAD. A representative part number is MOTORAD 7204160.

Standard Replacement: 3 parts, from AISIN, CALORSTAT and MOTORAD. A representative part number is AISIN THZ008.

4 further parts sit outside the graded sections, with the same engine-level match.

Part numbers include MOTORAD 7204160, AISIN THZ008 and CALORSTAT TH741888J, 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

6 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2023 Mazda CX-50, from MAHLE / CLEVITE and FEL-PRO. 1 part fits every engine; the other 5 are engine-specific.

This group includes FEL-PRO 36216, MAHLE / CLEVITE C33803 and MAHLE / CLEVITE C33774 and the remaining parts above.

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

2 Thermostat Housing / Water Outlet parts for the 2023 Mazda CX-50 come from 2 brands — FOUR SEASONS and MOTORAD.

Part numbers include FOUR SEASONS 86029 and MOTORAD CH6129.

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 for the 2023 Mazda CX-50 come from 4 brands — FVP, GATES, AISIN and 1 other brand. The "Popular" part is GATES 42205BH.

The Economy section: 1 option from FVP. FVP US8205 is listed in this group.

Standard Replacement: 4 parts, from GATES, AISIN, FVP and 1 other brand. A representative part number is GATES 42205BH.

This group includes GATES 42205BH, FVP US8205 and AISIN WPZ045 and the remaining 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

2 Water Pump Gasket parts are listed for the 2023 Mazda CX-50, from FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO 36188 and MAHLE / CLEVITE C33643.