2019 Mazda CX-3 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

18 Coolant / Antifreeze parts for the 2019 Mazda CX-3 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, VALVOLINE, BECK/ARNLEY, AISIN and 2 other brands supply 7 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 2019 Mazda CX-3, from AJUSA and MAHLE / CLEVITE.

Part numbers include AJUSA 16564000 and MAHLE / CLEVITE C33644.

This table covers the Cooling Fan control modules. Read more

2 Cooling Fan Control Module parts are listed for the 2019 Mazda CX-3, from STANDARD MOTOR PRODUCTS and WELLS.

This group includes STANDARD MOTOR PRODUCTS RY1924 and WELLS 6H1531.

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

3 Cooling System Tester Adapter parts for the 2019 Mazda CX-3 come from 2 brands — MOTORAD and GATES.

Listed part numbers: 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

8 Radiator parts for the 2019 Mazda CX-3 come from 8 brands — GPD, CSF, DENSO and 5 other brands. The "Popular" part is CSF 3920.

The Economy section: 1 option from GPD. GPD 13585C is listed in this group.

Standard Replacement: 7 parts, from CSF, DENSO, KOYORAD and 4 other brands. A representative part number is CSF 3920.

This group includes CSF 3920, GPD 13585C and DENSO 2219506 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

5 Radiator Cap parts for the 2019 Mazda CX-3 come from 3 brands — CALORSTAT, MOTORAD and GATES. The "Popular" part is MOTORAD T16R.

In the Locking Replacement grade, CALORSTAT and MOTORAD supply 2 parts: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is CALORSTAT RC0212.

Standard Replacement: 3 parts, from MOTORAD, CALORSTAT and GATES. A representative part number is MOTORAD T16R.

Listed part numbers: MOTORAD T16R, CALORSTAT RC0212 and MOTORAD ST16R, plus the other parts above.

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

6 Radiator Fan Assembly parts are listed for the 2019 Mazda CX-3, from DORMAN, GPD, TECHPRO and 3 other brands. DORMAN 621560 carries the "Popular" badge.

Economy: 3 parts, from DORMAN, GPD and TECHPRO. A representative part number is DORMAN 621560.

The Standard Replacement section: 3 options from TYC, FOUR SEASONS and UAC. TYC 624030 is listed in this group.

This group includes DORMAN 621560, GPD 2812032 and TECHPRO MA3115166 and the remaining 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

10 Temperature Sender / Sensor parts for the 2019 Mazda CX-3 come from 9 brands — WELLS, GPD, HOLSTEIN and 6 other brands. The "Popular" part is GPD 1712514.

The Economy section: 2 options from GPD and HOLSTEIN. GPD 1712514 is listed in this group.

Standard Replacement: 8 parts, from WELLS, DELPHI, BECK/ARNLEY and 4 other brands. A representative part number is DELPHI TS10289.

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

3 Thermostat parts are listed for the 2019 Mazda CX-3, from SKP, FOUR SEASONS and MOTORAD.

Economy: 1 part, from SKP. A representative part number is SKP SKTA9249.

The Standard Replacement section: 2 options from FOUR SEASONS and MOTORAD. FOUR SEASONS 86366 is listed in this group.

Listed part numbers: SKP SKTA9249, FOUR SEASONS 86366 and MOTORAD TA9249.

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

6 Water Pump parts are listed for the 2019 Mazda CX-3, from FVP, GATES, GMB and 2 other brands. GATES 42205BH carries the "Popular" badge.

Listed part numbers: GATES 42205BH, GMB 1452580 and AISIN WPZ045, 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

2 Water Pump Gasket parts for the 2019 Mazda CX-3 come from 2 brands — BECK/ARNLEY and FEL-PRO.

Listed part numbers: BECK/ARNLEY 0394193 and FEL-PRO 36188.