2024 Mazda 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

14 Coolant / Antifreeze parts for the 2024 Mazda 3 come from 5 brands — PRESTONE, PEAK, VALVOLINE and 2 other brands. The "Popular" part is PRESTONE AF3100. 11 parts fit every engine; the other 3 are engine-specific.

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 3 options from PRESTONE, VALVOLINE and PEAK — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.

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, AISIN, PEAK and 1 other brand supply 5 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

3 Coolant Hose / Pipe Seal parts are listed for the 2024 Mazda 3, from MAHLE / CLEVITE and AJUSA.

This group includes AJUSA 16564000, MAHLE / CLEVITE C33805 and MAHLE / CLEVITE C33644.

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

TECHPRO supplies both parts for the 2024 Mazda 3. All of them fit every engine offered in the 2024 3.

Part numbers include TECHPRO MA3014119 and TECHPRO MA3014121.

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

One part is listed for the 2024 Mazda 3 — MOTORAD T16R.

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

2 Cooling System Tester Adapter parts for the 2024 Mazda 3 come from MOTORAD.

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

8 Radiator parts for the 2024 Mazda 3 come from 7 brands — FVP, GPD, TECHPRO and 4 other brands.

The Economy section: 2 options from GPD and TECHPRO. GPD 13868C is listed in this group.

Standard Replacement: 4 parts, from CSF, NISSENS, TYC and 1 other brand. A representative part number is CSF 3966.

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

This group includes GPD 13868C, TECHPRO MA3010250 and CSF 3966 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

This group shows a single part: MOTORAD T16R.

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

4 Radiator Fan Assembly parts are listed for the 2024 Mazda 3, from UAC, TECHPRO and TYC. 2 parts fit every engine; the other 2 are engine-specific.

Economy: 1 part, from TECHPRO. A representative part number is TECHPRO MA3115170.

The Standard Replacement section: 3 options from UAC and TYC. TYC 625600 is listed in this group.

This group includes TECHPRO MA3115170, TYC 625600 and UAC FA50822C 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

3 Temperature Sender / Sensor parts for the 2024 Mazda 3 come from 3 brands — GPD, NISSENS and STANDARD MOTOR PRODUCTS. 2 parts fit every engine; the other 1 is engine-specific.

The Economy section: 1 option from GPD. GPD 1712514 is listed in this group.

Standard Replacement: 2 parts, from NISSENS and STANDARD MOTOR PRODUCTS. A representative part number is NISSENS 207098.

This group includes GPD 1712514, NISSENS 207098 and STANDARD MOTOR PRODUCTS TX308.

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

4 Thermostat parts are listed for the 2024 Mazda 3, from SKP, AISIN, FOUR SEASONS and 1 other brand.

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

The Standard Replacement section: 3 options from AISIN, FOUR SEASONS and MOTORAD. AISIN THZ008 is listed in this group.

Part numbers include SKP SKTA9249, AISIN THZ008 and FOUR SEASONS 86366, 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

5 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2024 Mazda 3 come from 2 brands — MAHLE / CLEVITE and FEL-PRO. The "Popular" part is FEL-PRO 36216.

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

One part is listed for the 2024 Mazda 3 — MOTORAD CH3147.

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

7 Water Pump parts are listed for the 2024 Mazda 3, from US MOTOR WORKS, FVP, GATES and 2 other brands. GATES 42205BH carries the "Popular" badge.

Economy: 1 part, from US MOTOR WORKS. A representative part number is US MOTOR WORKS US8205.

The Standard Replacement section: 2 options from GATES and AISIN. GATES 42205BH is listed in this group.

4 ungrouped parts are not assigned to a grade, with the same engine-level match.

Listed part numbers: GATES 42205BH, US MOTOR WORKS US8205 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 2024 Mazda 3 come from 2 brands — FEL-PRO and MAHLE / CLEVITE.

Part numbers include FEL-PRO 36188 and MAHLE / CLEVITE C33643.