Radiator & Components for 2025 GMC Sierra 3500 HD
No.
Part # / Description / Price
Price
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 $20.09
$12.70
MSRP $20.09
$12.70
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 $20.09
$12.70
MSRP $20.09
$12.70
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 $8.79
$5.54
MSRP $8.79
$5.54
4
Radiator Lower Mount GM
GM Positions: Right
Notes: PARTS: Part included with radiator.
Description: 6.6L diesel, 2017-19. 6.6L diesel, engine cooling, center. 6.6L turbo diesel. 6.6L diesel 2015-16. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.79
$5.54
MSRP $8.79
$5.54
5
Radiator Insulator GM
GM Positions: Right
Notes: PARTS: Part included with radiator.
Description: 6.6L diesel, engine cooling, lower.
MSRP $16.16
$10.18
MSRP $16.16
$10.18
6
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 $23.88
$15.05
MSRP $23.88
$15.05
6
Radiator Drain Petcock 
ACDelco
ACDelco Notes: PARTS: Part included with radiator.
Description: GM Genuine Parts Radiator Drain Petcocks are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$17.26
$17.26
9
Radiator Inlet Hose Clamp GM
GM Description: 6.6L diesel, engine cooling, rear. Easy to install or remove
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $34.42
$21.68
MSRP $34.42
$21.68
11
Radiator Hose Clamp GM
GM Notes: PARTS: Part included with lower hose.
Description: 2.8L. Easy to install or remove
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.70
$5.48
MSRP $8.70
$5.48
11
Multi-Purpose Hose Clamp ACDelco
ACDelco Notes: PARTS: Part included with lower hose.
Description: GM Genuine Parts Radiator Hose Clamps are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These clamps help provide a secure connection and a leak free seal. GM Genuine Parts are the true OE parts installed during ...
Not For Sale
Not For Sale
12
Multi-Purpose Clamp GM
GM Notes: PARTS: Part included with lower hose.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
12
Multi-Purpose Hose Clamp ACDelco
ACDelco Notes: PARTS: Part included with lower hose.
Description: GM Genuine Parts Hose Clamps are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
hose-clamp;clamp;hose;
hose-clamp;clamp;hose;
$3.80
$3.80
13
Expansion Tank GM
GM Description: 6.6L diesel, engine cooling. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $98.07
$61.78
MSRP $98.07
$61.78
13
Radiator Surge Tank ACDelco
ACDelco Description: GM Genuine Parts Engine Coolant Reservoirs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These engine coolant reservoirs hold any excess or overflowing coolant within the cooling system. If a situation arises ...
Not For Sale
Not For Sale
15
MSRP $45.74
$28.81
16
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 $61.10
$32.05
MSRP $61.10
$32.05
16
Multi-Purpose Clamp ACDelco
ACDelco Description: GM Genuine Parts Hose Clamps are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
hose-clamp;clamp;hose;
hose-clamp;clamp;hose;
Not For Sale
Not For Sale
17
Multi-Purpose Clamp GM
GM Description: 6.6L diesel, engine cooling, large. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $6.96
$4.17
MSRP $6.96
$4.17
17
Multi-Purpose Hose Clamp ACDelco
ACDelco Description: GM Genuine Parts Hose Clamps are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
hose-clamp;clamp;hose;
hose-clamp;clamp;hose;
$4.08
$4.08
18
Engine Coolant Air Bleed Pipe GM
GM Description: 6.6L diesel, engine cooling. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $32.39
$19.38
MSRP $32.39
$19.38
20
Radiator Surge Tank Outlet Hose ACDelco
ACDelco Description: GM Genuine Parts Engine Coolant Hoses are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Not For Sale
Not For Sale
No.
Part # / Description / Price
Price
1
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 $340.84
$214.70
MSRP $340.84
$214.70
1
Engine Auxiliary Radiator ACDelco
ACDelco Description: GM Genuine Parts Radiators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Radiators are heat exchangers, typically located in the front of the vehicle where air can flow through the fins and dissipate heat. Mo ...
Not For Sale
Not For Sale
1
Acdelcoâ„¢ Auxiliary Radiator GM
GM Description: 6.6L diesel, fuel cooling. Auxiliary. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
2
Outlet Hose GM
GM Description: 6.6L diesel, fuel cooling. Silverado, Sierra 2500 HD. Outlet. Silverado, Sierra 3500 HD.
MSRP $192.64
$121.35
MSRP $192.64
$121.35
2
Auxiliary Radiator Outlet Hose ACDelco
ACDelco Description: GM Genuine Parts Engine Coolant Hoses are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$138.58
$138.58
3
Inlet Hose GM
GM Description: Silverado, Sierra 2500 HD. Inlet. Silverado, Sierra 3500 HD. 6.6L diesel, fuel cooling, to 09/19/2024.
MSRP $121.41
$76.47
MSRP $121.41
$76.47
4
MSRP $29.21
$17.48
4
Surge Tank ACDelco
ACDelco Description: GM Genuine Parts Supercharger Coolant Tanks are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Not For Sale
Not For Sale
5
Reservoir Cap GM
GM Description: 3.0L diesel. 6.6L diesel, fuel cooling. 1.8L, generator cooling. 2020-22. 2023-25. 6.2L supercharger. HVAC System. Location-Reservoir. Charge Air Cooling.
MSRP $9.88
$5.19
MSRP $9.88
$5.19
6
MSRP $88.60
$53.01
7
Pump GM
GM Description: 6.6L diesel, fuel cooling. Thoroughly tested for reliable, leak-resistant performance
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $225.69
$135.09
MSRP $225.69
$135.09
8
MSRP $108.23
$64.77
8
Fuel Cooler ACDelco
ACDelco Description: GM Genuine Parts Fuel Coolers are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$53.42
$53.42
9
MSRP $199.40
$104.68
No.
Part # / Description / Price
Price
N/A
Inlet Hose GM
GM Description: Silverado, Sierra 2500 HD. Inlet. Silverado, Sierra 3500 HD. 6.6L diesel, fuel cooling, to 09/19/2024.
MSRP $121.41
$76.47
MSRP $121.41
$76.47
N/A
Outlet Hose GM
GM Description: 6.6L diesel, fuel cooling. Silverado, Sierra 2500 HD. Outlet. Silverado, Sierra 3500 HD.
MSRP $192.64
$121.35
MSRP $192.64
$121.35
N/A
Auxiliary Radiator Outlet Hose ACDelco
ACDelco Description: GM Genuine Parts Engine Coolant Hoses are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$138.58
$138.58
N/A
Radiator Shutter Assembly GM
GM Description: With active shutter. Sierra 2500 HD. Upper. Sierra 3500 HD.
$182.51
$182.51
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 $340.84
$214.70
MSRP $340.84
$214.70
N/A
Engine Auxiliary Radiator ACDelco
ACDelco Description: GM Genuine Parts Radiators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Radiators are heat exchangers, typically located in the front of the vehicle where air can flow through the fins and dissipate heat. Mo ...
Not For Sale
Not For Sale
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 $23.88
$15.05
MSRP $23.88
$15.05
N/A
Radiator Drain Petcock ACDelco
ACDelco Description: GM Genuine Parts Radiator Drain Petcocks are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$17.26
$17.26
N/A
By-Pass Hose GM
GM Description: Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $78.04
$40.97
MSRP $78.04
$40.97
1
MSRP $780.43
$491.63
1
Engine Radiator ACDelco
ACDelco Description: GM Genuine Parts Radiators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Radiators are heat exchangers, typically located in the front of the vehicle where air can flow through the fins and dissipate heat. Mo ...
$561.44
$561.44
2
Radiator Inlet Hose GM
GM Description: Manufactured to GM OE specification for fit, form, and function
MSRP $82.01
$51.66
MSRP $82.01
$51.66
2
Radiator Inlet Hose ACDelco
ACDelco Description: ACDelco GM Original Equipment Radiator Coolant Hose is a GM-recommended replacement component for one or more of the following vehicle systems: cooling. This original equipment hose will provide the same performance, durability, and service life you expect from General Motors. ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$58.99
$58.99
3
MSRP $175.56
$110.59
5
Expansion Tank GM
GM Description: 6.6L diesel, engine cooling. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $98.07
$61.78
MSRP $98.07
$61.78
5
Radiator Surge Tank ACDelco
ACDelco Description: GM Genuine Parts Engine Coolant Reservoirs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These engine coolant reservoirs hold any excess or overflowing coolant within the cooling system. If a situation arises ...
Not For Sale
Not For Sale
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 $42.22
$22.16
MSRP $42.22
$22.16
6
Engine Coolant Thermostat ACDelco
ACDelco Description: ACDelco GM Original Equipment Engine Coolant Thermostats control the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature, and are GM-recommended replacements for your vehicle's original co ...
$19.54
$19.54
6
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.
MSRP $82.56
$43.33
MSRP $82.56
$43.33
6
Engine Coolant Thermostat ACDelco
ACDelco Description: ACDelco GM Original Equipment Engine Coolant Thermostats control the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature, and are GM-recommended replacements for your vehicle's original co ...
$38.13
$38.13
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 $13.66
$7.17
MSRP $13.66
$7.17
7
Engine Coolant Thermostat O-Ring ACDelco
ACDelco Description: GM Genuine Parts Engine Coolant Thermostat Seals are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These seals help prevent coolant leaks from your vehicle's engine. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$6.30
$6.30
8
Thermostat Housing GM
GM Description: 6.6L diesel. Silverado, sierra. 6.6l. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $209.30
$109.87
MSRP $209.30
$109.87
9
Water Outlet GM
GM Description: Manufactured to GM OE specification for fit, form, and function
MSRP $89.04
$46.74
MSRP $89.04
$46.74
9
Water Outlet ACDelco
ACDelco Description: ACDelco GM Original Equipment Engine Coolant Water Outlets are housings that connect the radiator hoses to the engine, typically housing the engine coolant thermostat. For certain applications, the water outlet contains threaded holes or ports for sensors ...
Not For Sale
Not For Sale
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 $289.48
$151.97
MSRP $289.48
$151.97
10
Engine Water Pump Kit ACDelco
ACDelco Notes: Includes Thermostat Housing.
Description: An ACDelco GM Original Equipment Engine Water Pump circulates coolant through your vehicle's radiator and engine system to help maintain proper engine temperature and performance. This original equipment water pump has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
$125.43
$125.43
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 $8.00
$4.20
MSRP $8.00
$4.20
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 $9.16
$4.81
MSRP $9.16
$4.81
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 $276.69
$145.24
MSRP $276.69
$145.24
12
Fan Blade ACDelco
ACDelco Description: ACDelco GM Original Equipment Engine Cooling Fan Blades are located between the radiator and engine and are GM-recommended replacements for your vehicle's original components. The fan is a part of the engine cooling system, which moves air across the radia ...
Not For Sale
Not For Sale
13
Clutch GM
GM Description: 6.6L diesel, 4wd. Silverado, Sierra 2500 HD. 4wd. Silverado, Sierra 3500 HD. 4wd.
MSRP $591.94
$310.74
MSRP $591.94
$310.74
13
Fan Clutch GM
GM Description: Silverado, Sierra 2500 HD. Rwd. Silverado, Sierra 3500 HD. 6.6L diesel, 2wd.
13
Fan Blade Clutch ACDelco
ACDelco Description: GM Genuine Parts Engine Cooling Fan Clutches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These engine cooling fan clutches control the speed of the radiator fan based on the temperature of the air after it ...
Not For Sale
Not For Sale
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 $68.22
$42.98
MSRP $68.22
$42.98
14
Fan Shroud GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Rear. Silverado, Sierra 3500 HD.
MSRP $217.12
$136.77
MSRP $217.12
$136.77
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 $60.74
$38.42
MSRP $60.74
$38.42
No.
Part # / Description / Price
Price
12
M4.2x1.41x25 Multi-Purpose Bolt GM
GM Description: Fastens vehicle's components together
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
No.
Part # / Description / Price
Price
17
M4.2x1.41x25 Multi-Purpose Bolt GM
GM Description: Fastens vehicle's components together
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
No.
Part # / Description / Price
Price
13
M4.2x1.41x25 Multi-Purpose Bolt GM
GM Description: Fastens vehicle's components together
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
No.
Part # / Description / Price
Price
13
M4.2x1.41x25 Multi-Purpose Bolt GM
GM Description: Fastens vehicle's components together
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
No.
Part # / Description / Price
Price
13
M4.2x1.41x25 Multi-Purpose Bolt GM
GM Description: Fastens vehicle's components together
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Related Parts
Part # / Description / Price
Price
M4.2x1.41x25 Multi-Purpose Bolt GM
GM Description: Fastens vehicle's components together
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors