Radiator & Components for 2026 Cadillac CT5
1. Auxiliary Radiator 
2. Radiator 
3. Upper Baffle Bolt 
4. Upper Baffle Bolt 
5. Upper Baffle Bolt 
6. Upper Bracket Bolt 
7. Reservoir Cap 
8. Reservoir Cap 
9. Reservoir Cap 
10. Reservoir Cap 
11. Reservoir Cap 
12. Upper Baffle Bolt 
13. Reservoir Cap 
14. Reservoir Cap 
15. Reservoir Cap 
16. Reservoir Cap 
17. Reservoir Cap 
18. Reservoir Cap 
19. Reservoir Cap 
20. Reservoir Cap 
21. Reservoir Cap 
22. Reservoir Cap 
23. Reservoir Cap 
24. Reservoir Cap 
25. Reservoir Cap No.
Part # / Description / Price
Price
1
Auxiliary Radiator 
GM
GM Positions: Left
Description: 3.0L twin-turbo, auxiliary radiator. 6.2L, auxiliary. CT5. Left.
MSRP $362.45
$226.23
MSRP $362.45
$226.23
1
Auxiliary Radiator GM
GM Positions: Right
Description: 3.0L twin-turbo, auxiliary radiator. 6.2L, auxiliary. CT5. Right.
MSRP $284.40
$177.54
MSRP $284.40
$177.54
2
Intercooler Bracket Bolt GM
GM Positions: Left
Notes: PARTS: Part included with auxiliary radiator.
Description: 2.0L turbo, auxiliary. 3.6L, auxiliary. 6.2L, auxiliary. 6.2L supercharged, auxilliary. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $9.03
$6.17
MSRP $9.03
$6.17
3
Upper Bracket GM
GM Positions: Left
Description: 3.0L twin-turbo, auxiliary radiator. 6.2L, auxiliary.
$29.17
$29.17
3
Upper Bracket GM
GM Positions: Right
Description: 3.0L twin-turbo, auxiliary radiator. 6.2L, auxiliary.
$29.17
$29.17
4
Multi-Purpose Retainer GM
GM Positions: Left
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.34
$5.02
MSRP $7.34
$5.02
5
Charge Air Cooler Upper Insulator GM
GM Positions: Left
Notes: PARTS: Part included with upper bracket.
Description: 2.7L turbo, auxiliary. 3.0L twin-turbo, auxiliary radiator. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $5.44
$3.72
MSRP $5.44
$3.72
6
Upper Bracket Lower Insulator GM
GM Positions: Left
Notes: PARTS: Part included with upper bracket.
Description: 2.7L turbo, auxiliary. 3.0L twin-turbo, auxiliary radiator. 3.6L turbo, auxiliary. 6.2L, auxiliary.
MSRP $9.80
$7.06
MSRP $9.80
$7.06
7
Lower Bracket GM
GM Positions: Left
Description: 3.6L turbo, auxiliary. 6.2L, auxiliary.
MSRP $58.42
$37.96
MSRP $58.42
$37.96
7
Lower Bracket GM
GM Positions: Right
Description: 3.6L turbo, auxiliary. 6.2L, auxiliary.
MSRP $70.92
$46.08
MSRP $70.92
$46.08
8
Radiator Upper Insulator GM
GM Positions: Left
Notes: PARTS: Part included with lower bracket.
Description: 2.0L turbo. 2.7L turbo, main. 1.3l turbo. 3.6L. 1.2L. Rear cooling, without auxiliary radiator. Front cooling. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $9.01
$6.49
MSRP $9.01
$6.49
11
Radiator Hose GM
GM Positions: Left
Description: 6.2L, auxiliary. Auxiliary radiator. CT5. Left. Outlet.
MSRP $99.87
$66.51
MSRP $99.87
$66.51
11
MSRP $86.25
$57.44
12
MSRP $172.40
$109.08
12
Engine Auxiliary Water Pump GM
GM Description: CT5. 3.0l. Charge Air Cooling. 3.0L twin-turbo, radiator mounted, awd. Corvette. Generator. Battery cooling.
MSRP $263.46
$144.23
MSRP $263.46
$144.23
13
Upper Hose GM
GM Description: 6.2L, auxiliary. Auxiliary radiator. CT5. Right. Inlet.
MSRP $46.64
$31.90
MSRP $46.64
$31.90
13
Radiator Coolant Hose GM
GM Positions: Left
Description: 3.6L turbo, radiator mounted, #6. CT4. Left. Outlet. CT5. 6.2L, auxiliary. Auxiliary Radiator.
MSRP $110.17
$73.37
MSRP $110.17
$73.37
13
Radiator Coolant Hose GM
GM Positions: Right
Description: 3.6L turbo, radiator mounted, #3. CT4. Right. Inlet. CT5. 6.2L, auxiliary. Auxiliary Radiator.
MSRP $57.83
$39.56
MSRP $57.83
$39.56
13
Water Inlet Hose GM
GM Description: Auxiliary radiator. CT5. 6.2L, auxiliary. Charge Air Cooling. Inlet. Left.
MSRP $68.03
$46.52
MSRP $68.03
$46.52
14
Multi-Purpose Clamp GM
GM Description: Helps prevent leaks
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $2.84
$1.94
MSRP $2.84
$1.94
15
Coolant Hose Clamp GM
GM Notes: PARTS: part included with water inlet hose.
Description: Helps create a leak-resistant seal
Helps to secure and attach hose to connection points
This GM Genuine part is designed, engineered and tested to rigorous standards, and are backed by General Motors
MSRP $22.79
$16.40
MSRP $22.79
$16.40
15
Radiator Hose Clamp GM
GM Description: 5.3, 6.2L, front. Main, front, with hd cooling. 3.0L twin-turbo, main radiator. 3.0L diesel, rear. 2.7L turbo, front. 4.3L, front. Helps prevent leaks
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $4.67
$3.36
MSRP $4.67
$3.36