Cooling System for 2025 GMC Sierra 2500 HD
No.
Part # / Description / Price
Price
N/A
Inlet Hose 
GM
GM Description: GM Genuine Parts Auxiliary Radiator Inlet Hose (Part Number: 85119160) is an OE radiator inlet hose supplying coolant to auxiliary radiator or fuel-cooling circuits. Application: For specified diesel engines and fuel-cooling applications on Silverado/Sierr ...
MSRP $133.53
$87.71
MSRP $133.53
$87.71
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
$129.12
MSRP $197.46
$129.12
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.
$198.46
$198.46
N/A
Engine Auxiliary Radiator GM
GM Description: GM Genuine Parts Engine Auxiliary Radiator (Part Number: 84098260) is an OE auxiliary radiator designed for fuel cooling and supplemental engine cooling on heavy-duty diesel applications. Type: Auxiliary radiator assemblyApplications: Specified for 6.6L di ...
MSRP $316.67
$207.47
MSRP $316.67
$207.47
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
$19.09
MSRP $24.48
$19.09
N/A
By-Pass Pipe GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $80.00
$46.75
MSRP $80.00
$46.75
N/A
F (S)Heater GM
GM Description: GM Heater (Part Number: 12705875) is listed as an engine-cooling/heater assembly component per master description records. Application: Identified as an engine-cool/heater assembly component—factory replacement part for cooling/heating subassembly requir ...
MSRP $134.35
$83.86
MSRP $134.35
$83.86
1
Engine Radiator GM
GM Description: GM Genuine Parts Engine Radiator (Part Number: 85610318) is a factory radiator assembly designed for heavy-duty Silverado and Sierra 2500/3500 HD diesel applications. It is engineered to manage engine coolant flow and heat rejection for heavy-duty engine c ...
MSRP $879.94
$569.14
MSRP $879.94
$569.14
2
Radiator Inlet Hose GM
GM Description: Manufactured to GM OE specification for fit, form, and function
MSRP $37.85
$26.54
MSRP $37.85
$26.54
3
Radiator Coolant Hose GM
GM Description: GM Genuine Parts Radiator Outlet Hose (Part Number: 85119169) is a radiator outlet hose designed for engine cooling circuits on specified heavy-duty Silverado and Sierra diesel models. Function: Routes coolant from the radiator outlet to engine components ...
MSRP $175.56
$114.80
MSRP $175.56
$114.80
5
Expansion Tank GM
GM Description: Silverado, Sierra 2500 HD. 6.6L diesel, engine cooling. Silverado, Sierra 3500 HD.
MSRP $98.07
$64.43
MSRP $98.07
$64.43
6
Engine Coolant Thermostat GM
GM Description: GM Genuine Parts Engine Coolant Thermostat (Part Number: 12680456) is an engine coolant thermostat assembly that regulates coolant flow through the radiator to help the engine reach and maintain optimal operating temperature. Type: Caps (Coolant & Oil ...
MSRP $16.72
$11.69
MSRP $16.72
$11.69
6
Engine Coolant Thermostat GM
GM Description: GM Genuine Parts Engine Coolant Thermostat (Part Number: 12680457) is a factory thermostat assembly designed to regulate engine coolant temperature by controlling coolant flow to the radiator. Built to meet factory temperature and fit specifications (180° ...
MSRP $17.12
$11.97
MSRP $17.12
$11.97
7
Engine Coolant Thermostat O-Ring GM
GM Description: GM Genuine Parts Engine Coolant Thermostat O-Ring (Part Number: 12680544) is an OE-quality seal that prevents coolant leakage from the thermostat housing. It is intended to maintain a reliable coolant seal at the thermostat cover. Function: O-ring seal for ...
MSRP $14.00
$9.79
MSRP $14.00
$9.79
8
Thermostat Housing GM
GM Description: 6.6L diesel. Silverado, sierra. 6.6l. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
$213.48
$213.48
9
Water Outlet GM
GM Description: Manufactured to GM OE specification for fit, form, and function
MSRP $91.26
$53.33
MSRP $91.26
$53.33
10
Engine Water Pump GM
GM Notes: Includes Thermostat Housing.
Description: ACDelco Engine Water Pump (Part Number: 12680257)Type: Engine Water PumpFunction: Circulates engine coolant to maintain proper engine temperature and support cooling-system performanceNotes: Applications include Silverado/Sierra 6.6L diesel 2500/3500 HD; d ...
MSRP $296.72
$161.71
MSRP $296.72
$161.71
11
Water Pump Cover Seal GM
GM Description: ACDelco Water Pump Cover Seal (Part Number: 12643779) is an O-ring style seal for water pump cover connections designed to maintain a coolant-tight joint. Type: O-ring / water pump cover seal (gasket)Function: Forms a sealed connection for coolant passages ...
MSRP $8.20
$6.14
MSRP $8.20
$6.14
11
Water Pump Outlet Pipe Gasket GM
GM Description: GM Genuine Parts Water Pump Outlet Pipe Gasket (Part Number: 12644927) is a replacement gasket intended to seal the water pump outlet pipe for proper coolant containment. Function: Provides a sealing surface between the water pump outlet and pipe to preven ...
MSRP $0.88
$0.66
MSRP $0.88
$0.66
12
Fan Blade GM
GM Description: GM Genuine Parts Fan Blade (Part Number: 84012677) is an OE cooling fan blade intended to move airflow through the radiator and improve engine cooling efficiency. Type: Engine bay fan bladeFunction: Drives airflow across the radiator and condenser to suppo ...
MSRP $283.61
$154.55
MSRP $283.61
$154.55
12
Acdelco™ Fan Blade GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
13
Engine Cooling Fan Clutch GM
GM Description: GM Genuine Parts Clutch (Part Number: 85588578) is an engine cooling fan clutch assembly designed for heavy‑duty diesel applications to engage/disengage the fan based on thermal demand. Application: Specified for 6.6L diesel 4WD models including Silverad ...
MSRP $667.41
$298.72
MSRP $667.41
$298.72
14
Engine Coolant Fan Lower Shroud GM
GM Description: GM Genuine Parts Engine Coolant Fan Lower Shroud (Part Number: 84082828) is a factory lower shroud that helps contain and direct cooling fan airflow for heavy-duty engine cooling applications. Engineered to GM OE requirements for fit and airflow performanc ...
MSRP $69.92
$49.04
MSRP $69.92
$49.04
14
Engine Cooling Fan Upper Shroud GM
GM Description: GM Genuine Parts Engine Cooling Fan Upper Shroud (Part Number: 84943756) is an upper radiator fan shroud designed to house cooling fans and optimize airflow for heavy-duty engine cooling. Type: Upper engine cooling fan shroudFunction: Positions and protect ...
MSRP $62.25
$43.83
MSRP $62.25
$43.83
14
Fan Shroud GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Rear. Silverado, Sierra 3500 HD.
MSRP $222.55
$145.54
MSRP $222.55
$145.54