2020 Cadillac CT4 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

16 Coolant / Antifreeze parts for the 2020 Cadillac CT4 come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 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, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.

In the Premium grade, PRESTONE and PEAK supply 4 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 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.

This table covers the Coolant Air Bleed Hose pipes. Read more

4 Coolant Air Bleed Hose / Pipe parts for the 2020 Cadillac CT4 come from 2 brands — ACDELCO and GM GENUINE.

Part numbers include ACDELCO 55503533, ACDELCO 55508978 and GM GENUINE 55494528, among others listed above.

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

7 Coolant Hose / Pipe parts for the 2020 Cadillac CT4 come from 2 brands — GM GENUINE and ACDELCO. The "Popular" part is ACDELCO 55515456.

Part numbers include ACDELCO 55515456, GM GENUINE 55487348 and ACDELCO 84697667, among others listed above.

This table covers the Coolant Hose Connector flanges. Read more

2 Coolant Hose Connector / Flange parts for the 2020 Cadillac CT4 come from GM GENUINE.

Listed part numbers: GM GENUINE 23333192 and GM GENUINE 23171715.

This table covers the Coolant Hose retainers and clips. Read more

4 Coolant Hose Retainer / Clip parts for the 2020 Cadillac CT4 come from GM GENUINE.

This group includes GM GENUINE 11547354, GM GENUINE 11547445 and GM GENUINE 88996648 and the remaining parts above.

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

One part is listed for the 2020 Cadillac CT4 — GM GENUINE 23378398.

This table covers the brackets that mount the Coolant Reservoir. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

One part is listed for the 2020 Cadillac CT4 — GM GENUINE 84805610.

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

3 Coolant Reservoir Cap parts are listed for the 2020 Cadillac CT4, from AUTOTECNICA, CALORSTAT and MOTORAD.

This group includes AUTOTECNICA GM0714619, CALORSTAT RC0144 and MOTORAD T62.

This table covers the Coolant Reservoir retainers and clips. Read more

This group shows a single part: GM GENUINE 13596789.

This table covers the Hose clamps. Read more

10 Hose Clamp parts for the 2020 Cadillac CT4 come from GM GENUINE. The "Popular" part is GM GENUINE 11570871.

This table covers the intercoolers that cool turbo or supercharger charge air. Read more

2 Intercooler parts for the 2020 Cadillac CT4 come from GM GENUINE.

Listed part numbers: GM GENUINE 84750051 and GM GENUINE 84577608.

This table covers the Intercooler Air Hose pipes. Read more

This group shows a single part: GM GENUINE 84009657.

This table covers the brackets that mount the Intercooler Hose / Pipe. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

This group shows a single part: GM GENUINE 84849419.

This table covers the Intercooler Hose / Pipe clamps. Read more

One part is listed for the 2020 Cadillac CT4 — GM GENUINE 13438980.

This table covers the Intercooler retainers and clips. Read more

One part is listed for the 2020 Cadillac CT4 — GM GENUINE 88996648.

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

4 Radiator parts for the 2020 Cadillac CT4 come from 4 brands — GPD, FVP, GM GENUINE and 1 other brand.

The Economy section: 1 option from GPD. GPD 13889C is listed in this group.

Standard Replacement: 3 parts, from FVP, GM GENUINE and UAC. A representative part number is FVP RAD13889.

Part numbers include GPD 13889C, FVP RAD13889 and GM GENUINE 84511252, among others listed 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 for the 2020 Cadillac CT4 come from 3 brands — ACDELCO, GATES and PROFESSIONAL PARTS SWEDEN.

Part numbers include ACDELCO RC124, GATES 31569 and PROFESSIONAL PARTS SWEDEN 21342353.

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

One part is listed for the 2020 Cadillac CT4 — GM GENUINE 22790134.

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

3 Radiator Fan Assembly parts are listed for the 2020 Cadillac CT4, from TECHPRO, GM GENUINE and VDO / CONTINENTAL.

Economy: 1 part, from TECHPRO. A representative part number is TECHPRO GM3115355.

The Standard Replacement section: 2 options from GM GENUINE and VDO / CONTINENTAL. GM GENUINE 85080140 is listed in this group.

This group includes TECHPRO GM3115355, GM GENUINE 85080140 and VDO / CONTINENTAL FA74049.

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

ACDELCO supplies the 4 Radiator Hose parts for the 2020 Cadillac CT4.

Part numbers include ACDELCO 84697666, ACDELCO 84697669 and ACDELCO 84697668, among others listed above.

This table covers the brackets that mount the Radiator Mount. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

One part is listed for the 2020 Cadillac CT4 — GM GENUINE 84849419.

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 for the 2020 Cadillac CT4 come from 7 brands — GM GENUINE, GPD, HOLSTEIN and 4 other brands. The "Popular" part is GM GENUINE 55488246.

The Economy section: 2 options from GPD and HOLSTEIN. GPD 1814558 is listed in this group.

Standard Replacement: 7 parts, from GM GENUINE, FACET, STANDARD MOTOR PRODUCTS and 2 other brands. A representative part number is GM GENUINE 55488246.

Part numbers include GM GENUINE 55488246, GPD 1814558 and HOLSTEIN 2CTS0334, among others listed above.

This table covers the Temperature Sender / Sensor clips. Read more

This group shows a single part: DORMAN 66264.

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

One part is listed for the 2020 Cadillac CT4 — MOTORAD 1335000.

This table covers the gaskets that seal the Water Inlet. 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: GM GENUINE 55504553.

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 are listed for the 2020 Cadillac CT4, from WJB / INMOTION PARTS, GMB, FVP and 2 other brands. GMB 1302090 carries the "Popular" badge.

Economy: 1 part, from WJB / INMOTION PARTS. A representative part number is WJB / INMOTION PARTS WU6750.

The Standard Replacement section: 4 options from GMB, FVP, GM GENUINE and 1 other brand. GMB 1302090 is listed in this group.

This group includes GMB 1302090 and WJB / INMOTION PARTS WU6750 and the remaining parts above.

This table covers the Water Pump housings. Read more

2 Water Pump Housing parts for the 2020 Cadillac CT4 come from 2 brands — ACDELCO and GM GENUINE.

This group includes ACDELCO 55501820 and GM GENUINE 55503850.

This table covers the Water Pump Inlet tubes. Read more

One part is listed for the 2020 Cadillac CT4 — GM GENUINE 55487350.