Radiator & Components for 2026 GMC Sierra 2500 HD
1. Radiator 
2. Lower Baffle Bolt 
3. Lower Baffle Bolt 
4. By-Pass Hose 
5. Cap 
6. Cap 
7. Reservoir Cap 
8. Reservoir Cap 
9. Reservoir Cap 
10. Cap 
11. Reservoir Cap 
12. Reservoir Cap 
13. Reservoir Cap 
14. Reservoir Cap 
15. Reservoir Cap 
16. Reservoir Cap 
17. Reservoir Cap 
18. Reservoir Cap 
19. Reservoir Cap 
20. Cap 
21. Shutter Bolt 
22. Lower Shutter Bolt 
23. Shutter Bolt 
24. Reservoir Cap 
25. Reservoir Cap 
26. Reservoir Cap 
27. Reservoir Cap 
28. Reservoir Cap 
29. Reservoir Cap 
30. Reservoir Cap 
31. Reservoir Cap 
32. Reservoir Cap 
33. Reservoir Cap 34. Lower Baffle Bolt No.
Part # / Description / Price
Price
1
Engine Radiator 
GM
GM Description: 6.6L gas. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $566.67
$363.80
MSRP $566.67
$363.80
2
Passenger Side Radiator Upper Bracket GM
GM Positions: Right
Description: 6.6L gas. 6.6L diesel, engine cooling. Helps align and secure your vehicle's radiator mount
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
Collision parts are designed to help promote proper and safe repair
MSRP $20.58
$16.12
MSRP $20.58
$16.12
2
Driver Side Radiator Upper Bracket GM
GM Positions: Left
Description: 6.6L gas. 6.6L diesel, engine cooling. Helps align and secure your vehicle's radiator mount
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
Collision parts are designed to help promote proper and safe repair
MSRP $20.58
$16.12
MSRP $20.58
$16.12
2
Driver Side Radiator Lower Bracket GM
GM Positions: Left
Description: Helps align and secure your vehicle's radiator mount
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
Collision parts are designed to help promote proper and safe repair
MSRP $228.25
$158.13
MSRP $228.25
$158.13
2
Passenger Side Radiator Lower Bracket GM
GM Positions: Right
Description: Helps align and secure your vehicle's radiator mount
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
Collision parts are designed to help promote proper and safe repair
MSRP $228.25
$158.13
MSRP $228.25
$158.13
3
Radiator Upper Insulator GM
GM Positions: Right
Description: 6.6L gas. 6.6L diesel, engine cooling, upper. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $9.01
$7.03
MSRP $9.01
$7.03
4
Radiator Lower Insulator GM
GM Positions: Right
Notes: PARTS: Part included with radiator.
Description: 6.6L gas. 2.7L turbo. 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.65
$6.75
MSRP $8.65
$6.75
5
Radiator Drain Petcock GM
GM Notes: PARTS: Part included with radiator.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $24.48
$19.10
MSRP $24.48
$19.10
6
Upper Hose GM
GM Description: Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L gas.
MSRP $95.34
$68.64
MSRP $95.34
$68.64
7
Multi-Purpose Clamp GM
GM Description: 6.6L gas, front. 3.6L, front. 6.2L, with supercharger, #2. 1.3l turbo, #1. 2.0L, reservoir & hoses, #1. Helps prevent leaks
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.51
$5.86
MSRP $7.51
$5.86
8
Multi-Purpose Clamp GM
GM Description: 2018-20. 6.6L gas, rear. Reservoir & hoses, #2. Main, front. Helps prevent leaks
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $18.69
$14.57
MSRP $18.69
$14.57
9
Lower Hose GM
GM Description: Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L gas.
MSRP $38.11
$29.73
MSRP $38.11
$29.73
12
Radiator Surge Tank GM
GM Description: 6.6L gas. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Helps maintain optimal engine operating temperatures
Designed to contain excess or an expansion of coolant
When needed, helps circulate more coolant into the coolant system
MSRP $71.88
$51.76
MSRP $71.88
$51.76
14
MSRP $66.52
$47.89
15
Multi-Purpose Clamp GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $62.60
$40.70
MSRP $62.60
$40.70