Radiator & Components for 2021 Chevrolet Silverado 3500 HD
1. Radiator Upper Bracket 
2. Auxiliary Radiator 
3. Block Heater 
4. Reservoir Cap 
5. Cap 
6. Reservoir Cap 
7. Reservoir Cap 
8. Cap 
9. Reservoir Cap 
10. Reservoir Cap 
11. Reservoir Cap 
12. Reservoir Cap 
13. Reservoir Cap 
14. 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. Cap 
24. Reservoir Cap 
25. Reservoir Cap 
26. Shutter Bolt 
27. Shutter Bolt 
28. Reservoir Cap 
29. Reservoir Cap 
30. Reservoir Cap 
31. Reservoir Cap 
32. Reservoir Cap 
33. Reservoir Cap 
34. Reservoir Cap 
35. Reservoir Cap 
36. Reservoir Cap 
37. Reservoir Cap 
38. Reservoir Cap 
39. Reservoir Cap 
40. Reservoir Cap 
41. Reservoir Cap 
42. Reservoir Cap 
43. Reservoir Cap 
44. Reservoir Cap 
45. Reservoir Cap 
46. Reservoir Cap 
47. Reservoir Cap 
48. Reservoir Cap 
49. Reservoir Cap 
50. Reservoir Cap 
51. Reservoir Cap 
52. Reservoir Cap 
53. Reservoir Cap 
54. Reservoir Cap 
55. Reservoir Cap 
56. Reservoir Cap 
57. Reservoir Cap 
58. Radiator Support Air Deflector Bolt 
59. Radiator Support Air Deflector Bolt 60. Auxiliary Radiator Bolt No.
Part # / Description / Price
Price
N/A
By-Pass Pipe 
GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $80.00
$58.00
MSRP $80.00
$58.00
N/A
Radiator Drain Petcock GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $24.48
$22.04
MSRP $24.48
$22.04
N/A
Engine Auxiliary Radiator GM
GM Description: 6.6L diesel, fuel cooling. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Lightweight; the radiators have a positive heat transfer to weight ratio
Corrosion-resistant aluminum designed core helps optimize the radiators long lasting service life
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $316.67
$267.90
MSRP $316.67
$267.90
N/A
Outlet Hose GM
GM Description: 6.6L diesel, fuel cooling. Silverado, Sierra 2500 HD. Outlet. Silverado, Sierra 3500 HD. Auxiliary Radiator. Emission Reduction Fluid Injector Cooling.
MSRP $197.46
$168.23
MSRP $197.46
$168.23
N/A
Inlet Hose GM
GM Description: Silverado, Sierra 2500 HD. Inlet. Silverado, Sierra 3500 HD. Auxiliary Radiator. Emission Reduction Fluid Injector Cooling. 6.6L diesel, fuel cooling, to 09/19/2024.
MSRP $133.53
$113.76
MSRP $133.53
$113.76
N/A
Radiator Shutter Assembly GM
GM Description: With active shutter. Silverado 2500 HD. Upper. Silverado 3500 HD.
$254.29
$254.29
N/A
Radiator Shutter Assembly GM
GM Description: Silverado 2500 HD. Lower. Sierra 2500 HD. Sierra 3500 HD. Silverado 3500 HD.
$132.22
$132.22
1
Engine Radiator GM
GM Description: Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Primary. 6.6L diesel, engine cooling.
MSRP $879.94
$739.16
MSRP $879.94
$739.16
2
Radiator Inlet Hose GM
GM Description: Manufactured to GM OE specification for fit, form, and function
MSRP $37.85
$34.07
MSRP $37.85
$34.07
3
Radiator Coolant Hose GM
GM Description: Primary Radiator. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L diesel, engine cooling.
MSRP $175.56
$149.57
MSRP $175.56
$149.57
5
Tank GM
GM Description: 6.6L diesel, engine cooling. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $101.95
$86.86
MSRP $101.95
$86.86
6
Engine Coolant Thermostat GM
GM Description: Silverado, sierra. 6.6l. 185 degrees. 6.6L diesel, 185 deg. Silverado, Sierra 2500 HD. 185 degrees. Silverado, Sierra 3500 HD. 185 degrees. Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature
MSRP $16.72
$12.54
MSRP $16.72
$12.54
6
Engine Coolant Thermostat GM
GM Description: 6.6L diesel, 180 deg. Silverado, Sierra 2500 HD. 180 degrees. Silverado, Sierra 3500 HD. 180 degrees. Silverado, sierra. 6.6l. 180 degrees. 180 Degrees F.
MSRP $17.12
$12.84
MSRP $17.12
$12.84
7
Engine Coolant Thermostat O-Ring GM
GM Description: 6.6L diesel, 185 deg therm. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L diesel, 180 deg therm. Seals your vehicle's thermostat housing
Helps prevent coolant from leaking from the engine
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $14.00
$10.50
MSRP $14.00
$10.50
8
Thermostat Housing GM
GM Description: 6.6L diesel. Silverado, sierra. 6.6l. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $209.30
$148.60
MSRP $209.30
$148.60
9
Water Outlet GM
GM Description: Manufactured to GM OE specification for fit, form, and function
MSRP $91.26
$66.16
MSRP $91.26
$66.16
10
Engine Water Pump GM
GM Notes: Includes Thermostat Housing.
Description: Silverado, sierra. 6.6l. 6.6L diesel. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Thoroughly tested for reliable, leak-resistant performance
Uniform wall sections and smooth coolant-flow cavities for efficient operation
Coated seals with a stainless steel spring for durability
MSRP $296.72
$210.69
MSRP $296.72
$210.69
11
Water Pump Cover Seal GM
GM Description: Silverado, sierra. 6.6l. 6.6L diesel. Silverado, Sierra 2500 HD. O-ring. Silverado, Sierra 3500 HD. Made from some heat and chemical-resistant materials
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.20
$6.15
MSRP $8.20
$6.15
11
Water Pump Outlet Pipe Gasket GM
GM Description: 2017-19. 6.6L diesel. Silverado, Sierra 2500 HD. Gasket. Silverado, Sierra 3500 HD. 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
MSRP $0.88
$0.66
MSRP $0.88
$0.66
12
Fan Blade GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $283.61
$201.36
MSRP $283.61
$201.36
12
Acdelco™ Fan Blade GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
13
Clutch GM
GM Description: Silverado, Sierra 2500 HD. Rwd. Silverado, Sierra 3500 HD. 6.6L diesel, 2wd.
MSRP $627.66
$439.36
MSRP $627.66
$439.36
13
Engine Cooling Fan Clutch GM
GM Description: Silverado, Sierra 2500 HD. 4wd. Silverado, Sierra 3500 HD. 4wd. 6.6L diesel, 4wd.
MSRP $667.41
$467.19
MSRP $667.41
$467.19
14
Engine Coolant Fan Lower Shroud GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Front. Lower. Silverado, Sierra 3500 HD. Helps regulate engine temperature
Houses cooling fans
Helps optimize airflow
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $69.92
$60.84
MSRP $69.92
$60.84
14
Engine Cooling Fan Upper Shroud GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Front. Upper. Silverado, Sierra 3500 HD. Helps regulate engine temperature
Houses cooling fans
Helps optimize airflow
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
.
MSRP $62.25
$54.38
MSRP $62.25
$54.38
14
Fan Shroud GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Rear. Silverado, Sierra 3500 HD.
MSRP $222.55
$189.61
MSRP $222.55
$189.61