2021 Chrysler 300 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

20 Coolant / Antifreeze parts for the 2021 Chrysler 300 come from 6 brands — PRESTONE, VALVOLINE, PEAK and 3 other brands. The "Popular" part is FVP MV5050GAL. Every part fits both the 3.6L V6 and the 5.7L V8.

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, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.

In the Heavy Duty grade, VALVOLINE supplies 1 part: rated for severe service. A representative part number is VALVOLINE ZXG051.

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, PRESTONE, ACDELCO and 3 other brands supply 9 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

This group shows a single part: CONTINENTAL 63977.

This table covers the Coolant Hose Connector flanges. Read more

This group shows a single part: DORMAN 47297.

This table covers the seals at the Coolant Hose Connector / Flange. 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

One part is listed for the 2021 Chrysler 300 — ELRING 568900.

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

6 Coolant Reservoir parts are listed for the 2021 Chrysler 300, from DORMAN, SKP, GPD and 3 other brands. DORMAN 603380 carries the "Popular" badge. All of them fit every engine offered in the 2021 300.

Part numbers include DORMAN 603380, SKP SK603380 and GPD 2411086, among others listed above.

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

MOTORAD supplies both parts for the 2021 Chrysler 300. All of them fit every engine offered in the 2021 300.

The Locking Replacement section lists 1 option from MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. MOTORAD ST16 is listed in this group.

The Standard Replacement section: 1 option from MOTORAD. MOTORAD T16 is listed in this group.

Listed part numbers: MOTORAD ST16 and MOTORAD T16.

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

2 Cooling System Tester Adapter parts for the 2021 Chrysler 300 come from 2 brands — GATES and MOTORAD.

Listed part numbers: GATES 31413 and MOTORAD 3003.

This table covers the Hose clamps. Read more

2 Hose Clamp parts for the 2021 Chrysler 300 come from MOPAR.

Listed part numbers: MOPAR 55056415AA and MOPAR 32002370.

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

13 Radiator parts for the 2021 Chrysler 300 come from 12 brands — TYC, ULTRA-POWER, CSF and 9 other brands. The "Popular" part is ULTRA-POWER 13157. 12 parts fit every engine; the other 1 is engine-specific.

The Economy section: 1 option from ULTRA-POWER. ULTRA-POWER 13157 is listed in this group.

Standard Replacement: 12 parts, from TYC, CSF, AGILITY and 8 other brands. A representative part number is CSF 3525.

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

7 Radiator Cap parts for the 2021 Chrysler 300 come from 4 brands — GATES, CALORSTAT, MOPAR and 1 other brand. The "Popular" part is GATES 31528.

Locking Replacement: 1 part, from GATES. A representative part number is GATES 31518.

Standard Replacement: 4 parts, from GATES, CALORSTAT, MOPAR and 1 other brand. A representative part number is GATES 31528.

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

Listed part numbers: GATES 31528, GATES 31518 and CALORSTAT RC0151, plus the other parts above.

This table covers the petcocks used to drain the radiator. Read more

One part is listed for the 2021 Chrysler 300 — DORMAN 61134.

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

14 Radiator Fan Assembly parts are listed for the 2021 Chrysler 300, from GPD, FOUR SEASONS, UAC and 6 other brands. SKP SK621526 carries the "Popular" badge. 10 parts fit every engine; the other 4 are engine-specific.

Economy: 5 parts, from GPD, SKP and VARIOUS MFR. A representative part number is SKP SK621526.

The Premium section: 1 option from DORMAN. DORMAN 621526XD is listed in this group.

The Standard Replacement section: 8 options from FOUR SEASONS, UAC, VDO / CONTINENTAL and 2 other brands. FOUR SEASONS 76387 is listed in this group.

This table covers the Radiator Fan blades. Typical signs include chatter, streaks, or a skip at the top of the stroke. Confirm left and right lengths in the notes — they are often different. Read more

One part is listed for the 2021 Chrysler 300 — MOPAR 5137713AA.

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

4 Radiator Fan Motor parts for the 2021 Chrysler 300 come from 3 brands — MOPAR, GPD and VEMO. Every part fits both the 3.6L V6 and the 5.7L V8.

Part numbers include GPD 2312234, MOPAR 5137714AA and MOPAR 5072330AB, among others listed above.

This table covers the Radiator Fan resistors. Read more

This group shows a single part: AUTOTECNICA DG1320082.

This table covers the shrouds that duct air through the fan and radiator. Read more

This group shows a single part: MOPAR 68050294AC.

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

20 Radiator Hose parts are listed for the 2021 Chrysler 300, from DAYCO, GATES, CONTINENTAL and 3 other brands. DAYCO 72282 carries the "Popular" badge.

This table covers the Radiator insulators. Read more

TECHPRO supplies both parts for the 2021 Chrysler 300. All of them fit every engine offered in the 2021 300.

Listed part numbers: TECHPRO CH3013100 and TECHPRO CH3013102.

This table covers the Radiator mounts. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

One part is listed for the 2021 Chrysler 300 — DORMAN 927290.

This table covers the Radiator Mount bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

MOPAR supplies both parts for the 2021 Chrysler 300. All of them fit every engine offered in the 2021 300.

Listed part numbers: MOPAR 4596474AD and MOPAR 68017994AA.

This table covers the seals at the Radiator. 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

One part is listed for the 2021 Chrysler 300 — MOPAR 68026556AA.

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

19 Temperature Sender / Sensor parts for the 2021 Chrysler 300 come from 12 brands — STANDARD MOTOR PRODUCTS, GPD, HOLSTEIN and 9 other brands. The "Popular" part is DORMAN 926427. 7 parts fit every engine; the other 12 are engine-specific.

The Economy section: 8 options from GPD, HOLSTEIN, DORMAN and 3 other brands. DORMAN 926427 is listed in this group.

Standard Replacement: 11 parts, from STANDARD MOTOR PRODUCTS, MOPAR, WALKER PRODUCTS and 4 other brands. A representative part number is DELPHI TS10330.

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

20 Thermostat parts are listed for the 2021 Chrysler 300, from MOTORAD, DORMAN, GATES and 8 other brands. DORMAN 9023035 carries the "Popular" badge.

Economy: 4 parts, from DORMAN, AUTOTECNICA and SKP. A representative part number is DORMAN 9023035.

The Heavy Duty section: 1 option from MOTORAD. MOTORAD 5416203 is listed in this group.

The Premium section: 1 option from MOTORAD. MOTORAD 7416203 is listed in this group.

The Standard Replacement section: 12 options from MOTORAD, CALORSTAT, MOPAR and 4 other brands. GATES 34053 is listed in this group.

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

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

14 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2021 Chrysler 300 come from 5 brands — FEL-PRO, MAHLE / CLEVITE, APEX and 2 other brands. The "Popular" part is FEL-PRO 35974.

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

17 Thermostat Housing / Water Outlet parts are listed for the 2021 Chrysler 300, from DORMAN, SKP, MOPAR and 5 other brands. DORMAN 9023102HP carries the "Popular" badge.

Economy: 6 parts, from DORMAN and SKP. A representative part number is DORMAN 9023102HP.

The Standard Replacement section: 10 options from MOPAR, GATES, MOTORAD and 2 other brands. GATES CO34827 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

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 are listed for the 2021 Chrysler 300, from SKP, FVP, WJB / INMOTION PARTS and 10 other brands. SKP SK1204450 carries the "Popular" badge.

Economy: 9 parts, from SKP, FVP, WJB / INMOTION PARTS and 3 other brands. A representative part number is SKP SK1204450.

The Standard Replacement section: 14 options from ACDELCO, GATES, GMB and 4 other brands. ACDELCO 252983 is listed in this group.

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 for the 2021 Chrysler 300 come from 7 brands — APEX, FEL-PRO, MAHLE / CLEVITE and 4 other brands. The "Popular" part is APEX AWP3283.

This table covers the Water Pump Inlet tubes. Read more

One part is listed for the 2021 Chrysler 300 — MOPAR 5038503AA.