2018 Cadillac CTS 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 2018 Cadillac CTS come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL. Every part fits all 4 engine options (2.0L L4 Turbocharged, 3.6L V6, 3.6L V6 Turbocharged and 6.2L V8 Supercharged).

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 2018 Cadillac CTS come from GM GENUINE.

This group includes GM GENUINE 12634280, GM GENUINE 12683453 and GM GENUINE 12653191 and the remaining parts above.

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

22 Coolant Hose / Pipe parts for the 2018 Cadillac CTS come from 4 brands — GM GENUINE, GATES, ACDELCO and 1 other brand. The "Popular" part is GATES 51396.

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

7 Coolant Hose / Pipe Seal parts are listed for the 2018 Cadillac CTS, from GM GENUINE, ELRING, FEL-PRO and 1 other brand. GM GENUINE 12627055 carries the "Popular" badge. 1 part fits every engine; the other 6 are engine-specific.

Part numbers include GM GENUINE 12627055, ELRING 943630 and FEL-PRO 36156, among others listed above.

This table covers the Coolant Hose Connector flanges. Read more

2 Coolant Hose Connector / Flange parts for the 2018 Cadillac CTS come from GM GENUINE.

Part numbers include GM GENUINE 23333192 and GM GENUINE 1533814.

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 2018 Cadillac CTS — ELRING 237180.

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

4 Coolant Hose Retainer / Clip parts for the 2018 Cadillac CTS come from GM GENUINE.

This group includes GM GENUINE 11547758, GM GENUINE 11547271 and GM GENUINE 11547756 and the remaining parts above.

This table covers the gaskets that seal the Coolant Pipe. 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

One part is listed for the 2018 Cadillac CTS — AJUSA 01154600.

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

2 Coolant Reservoir parts are listed for the 2018 Cadillac CTS, from GM GENUINE and GPD. All of them fit every engine offered in the 2018 CTS.

Listed part numbers: GM GENUINE 22948113 and GPD 2411335.

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

5 Coolant Reservoir Cap parts are listed for the 2018 Cadillac CTS, from MOTORAD, ACDELCO, AUTOTECNICA and 2 other brands. MOTORAD T62 carries the "Popular" badge. All of them fit every engine offered in the 2018 CTS.

Listed part numbers: MOTORAD T62, ACDELCO 12R05 and AUTOTECNICA GM0714619, plus the other parts above.

This table covers the Cooling Fan control modules. Read more

3 Cooling Fan Control Module parts are listed for the 2018 Cadillac CTS, from GM GENUINE, SHEE-MAR and STANDARD MOTOR PRODUCTS. 2 parts fit every engine; the other 1 is engine-specific.

This group includes GM GENUINE 1581991, SHEE-MAR SM1270 and STANDARD MOTOR PRODUCTS RY1941.

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

3 Cooling System Tester Adapter parts for the 2018 Cadillac CTS come from 2 brands — MOTORAD and GATES. 2 parts fit every engine; the other 1 is engine-specific.

This group includes GATES 31391, MOTORAD 3128 and MOTORAD 3127.

This table covers the Hose clamps. Read more

11 Hose Clamp parts for the 2018 Cadillac CTS come from GM GENUINE. The "Popular" part is GM GENUINE 13162312.

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

12 Intercooler parts for the 2018 Cadillac CTS come from 6 brands — GM GENUINE, TECHPRO, GPD and 3 other brands. The "Popular" part is TYC 18133.

The Economy section: 2 options from TECHPRO. TECHPRO GM3012125 is listed in this group.

Standard Replacement: 3 parts, from GM GENUINE. A representative part number is GM GENUINE 84356897.

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

This table covers the Intercooler Air Hose pipes. Read more

7 Intercooler Air Hose / Pipe parts for the 2018 Cadillac CTS come from GM GENUINE.

Part numbers include GM GENUINE 22799479, GM GENUINE 22799478 and GM GENUINE 22799477, among others listed above.

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

3 Intercooler Gasket parts are listed for the 2018 Cadillac CTS, from GM GENUINE and ELRING. 1 part fits every engine; the other 2 are engine-specific.

Listed part numbers: ELRING B18110, GM GENUINE 12642745 and GM GENUINE 12642744.

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

6 Intercooler Hose / Pipe Bracket parts for the 2018 Cadillac CTS come from GM GENUINE.

Listed part numbers: GM GENUINE 22990685, GM GENUINE 22990686 and GM GENUINE 84399882, plus the other parts above.

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

One part is listed for the 2018 Cadillac CTS — GM GENUINE 13335193.

This table covers the Intercooler retainers and clips. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 88996648.

This table covers the seals at the Intercooler. 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 2018 Cadillac CTS — GM GENUINE 12608997.

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

22 Radiator parts for the 2018 Cadillac CTS come from 10 brands — AGILITY, KOYORAD, TYC and 7 other brands. The "Popular" part is CSF 3904. 2 parts fit every engine; the other 20 are engine-specific.

The Economy section: 3 options from GPD and TECHPRO. GPD 13784C is listed in this group.

Standard Replacement: 19 parts, from AGILITY, KOYORAD, TYC and 5 other brands. A representative part number is CSF 3904.

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

2 Radiator Cap parts for the 2018 Cadillac CTS come from ACDELCO. Every part fits all 4 engine options (2.0L L4 Turbocharged, 3.6L V6, 3.6L V6 Turbocharged and 6.2L V8 Supercharged).

Part numbers include ACDELCO RC117 and ACDELCO RC115.

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

One part is listed for the 2018 Cadillac CTS — GM GENUINE 22887095.

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

15 Radiator Fan Assembly parts are listed for the 2018 Cadillac CTS, from GM GENUINE, UAC, GPD and 7 other brands. GM GENUINE 1581864 carries the "Popular" badge.

Economy: 5 parts, from GPD, DORMAN, TECHPRO and 1 other brand. A representative part number is DORMAN 621984.

The Standard Replacement section: 10 options from GM GENUINE, UAC, TYC and 3 other brands. GM GENUINE 1581864 is listed in this group.

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

24 Radiator Hose parts are listed for the 2018 Cadillac CTS, from GM GENUINE, ACDELCO, GATES and 2 other brands. ACDELCO 22815L carries the "Popular" badge.

This table covers the Radiator insulators. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 52476687.

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

GM GENUINE supplies the 6 Radiator Seal parts for the 2018 Cadillac CTS. GM GENUINE 23107669 carries the "Popular" badge.

Listed part numbers: GM GENUINE 23107669, GM GENUINE 23164440 and GM GENUINE 23445353, plus the other parts above.

This table covers the Radiator Upper Air Baffle retainers and clips. Read more

3 Radiator Upper Air Baffle Retainer / Clip parts are listed for the 2018 Cadillac CTS, from DORMAN and GM GENUINE. 1 part fits every engine; the other 2 are engine-specific.

Listed part numbers: DORMAN 961362, DORMAN 963208 and GM GENUINE 10402850.

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

29 Temperature Sender / Sensor parts for the 2018 Cadillac CTS come from 15 brands — WALKER PRODUCTS, GM GENUINE, STANDARD MOTOR PRODUCTS and 12 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS TX89T. They are grouped as Economy, Full Service Kit and Standard Replacement, with Standard Replacement the largest group at 18 parts from GM GENUINE, WALKER PRODUCTS, STANDARD MOTOR PRODUCTS and 7 other brands.

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

This group shows a single part: DORMAN 66264.

This table covers the Temperature Sender / Sensor O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

This group shows a single part: GM GENUINE 12639042.