Radiator & Components for 2025 GMC Sierra 2500 HD
1. Radiator 
2. Block Heater 
3. Lower Baffle Bolt 
4. Lower Baffle Bolt 
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
N/A
Engine Block Heater 
GM
GM Description: GM Engine Block Heater (Part Number: 12586687) is an engine coolant/engine block heater designed to warm engine coolant and oil for easier cold starts in specific gasoline and diesel engines. Function: Heats engine coolant/engine block to improve cold-star ...
MSRP $93.55
$59.20
MSRP $93.55
$59.20
N/A
Radiator Drain Petcock GM
GM Description: GM Genuine Parts Radiator Drain Petcock (Part Number: 22790134) is an OEM radiator drain valve designed to allow controlled coolant draining for maintenance and service. Type: Radiator drain petcock / drain plugFunction: Enables controlled drainage of cool ...
MSRP $24.48
$17.63
MSRP $24.48
$17.63
N/A
Shutter GM
GM Description: GM Genuine Parts Shutter (Part Number: 85021606) is a front bumper shutter assembly used to control airflow and close openings when required. Type: Shutter assembly (front bumper)Function: Regulates airflow for cooling efficiency and aerodynamic controlMaster description: "SHUTTER ASM-FRT BPR"Buy from World Parts Direct—an American company providing great prices, an OEM compatibility guarantee, and expert assistance for body components.
$199.02
$199.02
N/A
MSRP $66.52
$45.50
1
Engine Radiator GM
GM Description: GM Genuine Parts Engine Radiator (Part Number: 84889155) is a GM OE radiator assembly designed to transfer engine heat to the cooling airflow and maintain proper engine temperature. Type: Engine radiator assembly (RADIATOR ASM-ENG).Function: Transfers heat ...
MSRP $566.67
$370.60
MSRP $566.67
$370.60
2
Upper Hose GM
GM Description: GM Genuine Parts Radiator Inlet Hose (Part Number: 85119166) is an upper radiator hose that routes coolant to the engine, specified for heavy-duty Silverado and Sierra 6.6L gas applications. Type: Radiator Inlet / Upper HoseFunction: Carries coolant betwee ...
MSRP $95.34
$63.49
MSRP $95.34
$63.49
3
Lower Hose GM
GM Description: GM Genuine Parts Radiator Outlet Hose (Part Number: 85119159) is an outlet radiator hose (HOSE-RAD OTLT) delivering coolant from the radiator to the engine cooling system. Built to OEM specifications for fit and coolant routing. Type: Radiator outlet hose ...
MSRP $38.11
$26.07
MSRP $38.11
$26.07
5
Radiator Surge Tank GM
GM Description: GM Genuine Parts Radiator Surge Tank (Part Number: 84630072) is an OEM coolant surge/overflow tank designed to help manage coolant expansion and maintain proper system levels. Function: Provides expansion volume and a reservoir to help regulate coolant lev ...
MSRP $71.88
$49.17
MSRP $71.88
$49.17
6
187 Degrees Engine Coolant Thermostat with Seal GM
GM Description: GM Genuine Parts 187 Degrees Engine Coolant Thermostat with Seal (Part Number: 89018168) is a thermostat kit that regulates coolant flow to help the engine reach and maintain optimal operating temperature. Also known as: Engine Coolant Thermostat|15231Func ...
MSRP $74.05
$42.23
MSRP $74.05
$42.23
7
Water Inlet Seal GM
GM Description: GM Genuine Parts Water Inlet Seal (Part Number: 12587397) is an OE seal used at coolant inlet points to prevent coolant leakage and maintain the cooling system's integrity. It helps preserve proper engine temperature control by preventing coolant loss. Typ ...
MSRP $11.12
$6.67
MSRP $11.12
$6.67
8
Engine Water Pump Inlet Tube GM
GM Description: GM Genuine Parts Engine Water Pump Inlet Tube (Part Number: 12587395) is a coolant inlet tube that interfaces with the engine water pump to route coolant into the pump. Function: Provides coolant routing to the engine water pump inlet for proper cooling sy ...
MSRP $18.38
$11.03
MSRP $18.38
$11.03
9
Water Pump GM
GM Notes: Includes Thermostat Housing.
Description: ACDelco Pump (Part Number: 12735409) is listed as a water pump assembly (PUMP ASM-WAT) offered to meet factory cooling circulation requirements. This GM OE water pump is designed to deliver coolant flow per factory specifications. Type: GM OE Water PumpsFu ...
MSRP $567.12
$310.50
MSRP $567.12
$310.50
10
Water Pump Gasket GM
GM Description: ACDelco Water Pump Gasket (Part Number: 12682391) is an OE-grade sealing gasket for water pump assemblies that helps prevent coolant leaks and maintain proper coolant flow. Function: Provides a fluid-tight seal between the water pump and engine housing to ...
MSRP $0.88
$0.53
MSRP $0.88
$0.53
11
Engine Cooling Fan Blade GM
GM Description: GM Genuine Parts Engine Cooling Fan Blade (Part Number: 25919018) is a cooling fan blade assembly component for electric cooling systems used on select heavy-duty GM trucks and engines. Application: Designed for Silverado/Sierra models with electric coolin ...
MSRP $199.23
$110.57
MSRP $199.23
$110.57
12
Fan Blade Clutch GM
GM Description: GM Genuine Parts Fan Blade Clutch (Part Number: 84382012) is an OEM fan clutch assembly that engages and disengages the engine cooling fan to help control engine temperature and reduce noise when appropriate. Function: Fan clutch that couples or decouples ...
MSRP $349.78
$191.50
MSRP $349.78
$191.50
13
Upper Shroud GM
GM Description: GM Genuine Parts Shroud (Part Number: 84943753) is listed as "SHROUD-ENG COOL FAN UPR" — an upper engine cooling fan shroud intended to channel air through the radiator and cooling fan. Type: Upper engine cooling fan shroudFunction: Directs airflow for i ...
MSRP $75.37
$51.56
MSRP $75.37
$51.56
13
Fan Shroud GM
GM Description: GM Genuine Parts Engine Cooling Fan Shroud (Part Number: 85112067) is an OEM fan shroud designed to optimize airflow through the radiator core and improve cooling efficiency for heavy-duty engine applications. Type: Radiator fan shroud / rear shroudFunctio ...
MSRP $198.93
$130.70
MSRP $198.93
$130.70
13
Fan Shroud GM
GM Description: 6.6L gas. Silverado, Sierra 2500 HD. Front. Lower. Silverado, Sierra 3500 HD.
MSRP $86.75
$57.78
MSRP $86.75
$57.78