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Home
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Sierra 2500 HD
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2003
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Cooling Systems, Fans, Radiators & Components
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Thermostat Housing
2003 GMC Sierra 2500 HD Thermostat Housing
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2003 GMC Sierra 2500 HD
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Cooling Systems, Fans & Radiators
Department
OE
Replacement
Brands
Dorman
Four Seasons
Gates
Prices
$19.99 and under
$20 to $49.99
$50 to $99.99
$100 and over
17 Products found
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OEM (Genuine)
2003 GMC Sierra 2500 HD Inlet Assembly
PartNumber:
12600172
VEHICLE SPECIFIC
Product Specifications
Notes:
4.8, 5.3 & 6.0 Liter
Item Dimensions:
6.4 x 4.2 x 4.2 inches
Item Weight:
0.90 Pounds
Fitment Type:
Direct Replacement
Replaces:
12581594
Part Description:
2003 GMC Sierra 2500 HD Inlet Assembly
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
$43.57
MSRP:
$82.23
You Save: $38.66 (48%)
Check Fit
Add to Cart
Dorman®
Engine Coolant Thermostat Housing Assembly for 2003 GMC Sierra 2500 HD
PartNumber:
902-2836
VEHICLE SPECIFIC
Product Specifications
Notes: wo/Water Pump Casting# 12562459; Use If Original Water Pump Replaced w/Later Design; Includes Thermostat
OE Part Number: 12600172, 12581594, 12568911, 8125815940, 8125689110, 8126001720
Package Contents: 1 Thermostat Housing
UPC: 889245054883
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Thermostat Housing Assembly
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
$39.33
Add to Cart
Gates®
Engine Coolant Water Outlet for 2003 GMC Sierra 2500 HD
PartNumber:
CO34923
VEHICLE SPECIFIC
Product Specifications
Notes: Thermostat Cover; W/GM Updated Replacement Water Pump
By-Pass Holes: No
Material: Cast Aluminum
Number of Bolt Holes: 2
Number of Gaskets: 0
Number of Seals: 0
OE Exact: Yes
Outlet Inside Diameter 1: 1.194"
Outlet Outside Diameter 1: 1.565"
Type: Coolant Outlet
UPC: 770075795179
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Water Outlet
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
$24.06
Add to Cart
View Related Parts
OEM (Genuine)
2003 GMC Sierra 2500 HD Thermostat Unit
PartNumber:
12571261
VEHICLE SPECIFIC
Product Specifications
Notes:
All Models; 4.8l, 5.3l, 6.0l; Includes Thermostat
Other Names:
Thermostat Housing, Thermostat Unit
Item Dimensions:
6.5 x 4.3 x 4.2 inches
Item Weight:
1.10 Pounds
Fitment Type:
Direct Replacement
Replaces:
12561157, 12562740
Part Description:
2003 GMC Sierra 2500 HD Thermostat Unit
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
$41.61
MSRP:
$78.51
You Save: $36.90 (48%)
Check Fit
Add to Cart
Four Seasons®
Engine Coolant Water Outlet W O Thermostat for 2003 GMC Sierra 2500 HD
PartNumber:
85253
VEHICLE SPECIFIC
Product Specifications
Notes: Outlet
Bolt Hole Center To Bolt Hole Center: 3.125
Gasket or Seal Included: Not Included
Inlet Dia. IN: 2.003
Material: Aluminum
Maximum Height: 2.507
Meets / Exceeds OEM: Yes
Mnt Flange Width IN: 0.791
Style: w/o Thermostat
Symetrical Base: No
Thermostat Included: Not Included
UPC: 096361852532
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Water Outlet W O Thermostat
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.6L
$64.13
Add to Cart
Dorman®
Engine Coolant Thermostat Housing for 2003 GMC Sierra 2500 HD
PartNumber:
902-2068
VEHICLE SPECIFIC
Product Specifications
Notes: Cover
Air Vent (Bleeder Valve): Yes
Bolt Hole Diameter: 0.313"
Bolt Hole Quantity: 4
Bolts Included: No
Color/Finish: Natural
Material: Metal
O Rings Included: Not Required
OE Part Number: 97225886
Outlet Diameter: 2"
Thermostat Included: No
UPC: 885484546646
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Thermostat Housing
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.6L
$37.06
Add to Cart
View Related Parts
OEM (Genuine)
2003 GMC Sierra 2500 HD Thermostat Housing
PartNumber:
12578330
VEHICLE SPECIFIC
Product Specifications
Notes:
All Models; 8.1l; Engine Cooling Pipe
Other Names:
Thermostat Housing
Item Dimensions:
48.3 x 11.6 x 7.3 inches
Item Weight:
15.30 Pounds
Fitment Type:
Direct Replacement
Replaces:
12573197
Part Description:
2003 GMC Sierra 2500 HD Thermostat Housing
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 8.1 L GAS
$205.37
MSRP:
$326.07
You Save: $120.70 (38%)
Check Fit
Add to Cart
Four Seasons®
Engine Coolant Thermostat Housing W O Thermostat for 2003 GMC Sierra 2500 HD
PartNumber:
85254
VEHICLE SPECIFIC
Product Specifications
Notes: w/o Thermostat
Bolt Hole Center To Bolt Hole Center: 3.000
Flange Thickness: 0.395
Gasket or Seal Included: Included
Inlet Port Diameter: 1.307
Material: Aluminum
Meets / Exceeds OEM: Yes
Overall Height IN: 2.51
Style: w/o Thermostat
Symetrical Base: Yes
Thermostat Included: Not Included
UPC: 096361852549
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Thermostat Housing W O Thermostat
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
$30.40
Add to Cart
Dorman®
Engine Coolant Thermostat Housing for 2003 GMC Sierra 2500 HD
PartNumber:
902-2700
VEHICLE SPECIFIC
Product Specifications
Notes: Incls Thermostat; w/Water Pump Casting# 12562459; w/Thermostat Retainer Brackets; 180 Degrees Fahrenheit
Bleeder Hole: No
Bolt Hole Center To Bolt Hole Center: 3"
Bolt Hole Quantity: 3
Color: Natural
Flange Length: 4.376"
Flange Thickness: 0.35"
Flange Width: 2.75"
Gasket or Seal Included: Yes
Gasket Type: O Ring
Grade Type: Regular
Inside Diameter: 1.3"
Material: Aluminum
Mounting Hardware Included: No
Outlet Port Quantity: 1
Package Contents: 1 Thermostat Housing; 1 Thermostat; 1 O-Ring
Thermostat Included: Yes
Thermostat Opening Temperature: 180 Deg. F
UPC: 889245055224
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Thermostat Housing
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
$23.46
Add to Cart
Four Seasons®
Engine Coolant Water Outlet W O Thermostat for 2003 GMC Sierra 2500 HD
PartNumber:
85191
VEHICLE SPECIFIC
Product Specifications
Notes: Outlet
Bolt Hole Center To Bolt Hole Center: 2.375
Gasket or Seal Included: Included
Material: Aluminum
Meets / Exceeds OEM: Yes
Style: w/o Thermostat
Symetrical Base: Yes
Thermostat Included: Not Included
UPC: 096361851917
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Water Outlet W O Thermostat
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 8.1L
$24.98
Add to Cart
View Related Parts
OEM (Genuine)
2003 GMC Sierra 2500 HD Thermostat Cover
PartNumber:
97225886
VEHICLE SPECIFIC
Product Specifications
Notes:
6.6 Liter Turbo Diesel
Other Names:
Thermostat Cover
Item Dimensions:
6.6 x 3.5 x 3.9 inches
Item Weight:
1.10 Pounds
Fitment Type:
Direct Replacement
Part Description:
2003 GMC Sierra 2500 HD Thermostat Cover
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
$343.18
MSRP:
$544.88
You Save: $201.70 (38%)
Check Fit
Add to Cart
Dorman®
Engine Coolant Thermostat Housing for 2003 GMC Sierra 2500 HD
PartNumber:
902-2701
VEHICLE SPECIFIC
Product Specifications
Notes: Incls Thermostat; w/Water Pump Casting# 12562459; w/Thermostat Retainer Brackets; 160 Degrees Fahrenheit
Bleeder Hole: No
Bolt Hole Center To Bolt Hole Center: 3"; 0.87"
Bolt Hole Quantity: 3
Color/Finish: Natural
Flange Length: 4.39"
Flange Thickness: 0.4"
Flange Width: 2.701"
Gasket Type: Gasket
Grade Type: Regular
Inside Diameter: 1.236"
Material: Metal
Mounting Hardware Included: No
OE Part Number: 12571261, 8125712610
Outlet Port Quantity: 1
Thermostat Included: No
Thermostat Opening Temperature (F): 160 Degrees
UPC: 889245054906
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Thermostat Housing
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
$22.81
Add to Cart
Dorman®
Engine Coolant Thermostat Housing for 2003 GMC Sierra 2500 HD
PartNumber:
902-836
VEHICLE SPECIFIC
Product Specifications
Notes: Cover; Does Not Incl Thermostat; wo/Water Pump Casting# 12562459; Use If Original Water Pump Replaced w/Later Design
Air Vent (Bleeder Valve): No
Bolt Hole Diameter: 0.313"
Bolt Hole Quantity: 2
Bolts Included: No
Color/Finish: Natural
Gasket or Seal Included: No
Housing Neck Angle (°): 30 Degree
Material: Metal
O Rings Included: Not Required
OE Part Number: 12600172, 12581594, 12568911
Outlet Diameter: 1.64"
Thermostat Included: No
UPC: 037495607070
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Thermostat Housing
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
$17.55
Add to Cart
Dorman®
Engine Coolant Thermostat Housing for 2003 GMC Sierra 2500 HD
PartNumber:
902-2060
VEHICLE SPECIFIC
Product Specifications
Notes: Cover
Air Vent (Bleeder Valve): No
Bolt Hole Diameter: 0.313"
Bolt Hole Quantity: 3
Bolts Included: No
Color/Finish: Natural
Housing Neck Angle (°): 180 Degree
Material: Metal
O Rings Included: Not Required
OE Part Number: 12559861
Outlet Diameter: 1.5"
Thermostat Included: No
UPC: 885484546486
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Thermostat Housing
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 8.1L
$20.43
Add to Cart
Dorman®
Engine Coolant Thermostat Housing for 2003 GMC Sierra 2500 HD
PartNumber:
902-700
VEHICLE SPECIFIC
Product Specifications
Notes: w/Water Pump Casting# 12562459; w/Thermostat Retainer Brackets; Incls 186 Fahrenheit Degree Thermostat
Bleeder Hole: No
Bolt Hole Center To Bolt Hole Center: 2.726"; 3.547"
Bolt Hole Quantity: 2
Color/Finish: Natural
Flange Length: 4.39"
Flange Thickness: 0.399"
Flange Width: 2.701"
Gasket Type: Gasket
Grade Type: Regular
Inside Diameter: 1.236"
Material: Metal
Mounting Hardware Included: No
OE Part Number: 12571261
Outlet Port Quantity: 1
Thermostat Opening Temperature (F): 186 Degrees
UPC: 037495708449
Part Description: 2003 GMC Sierra 2500 HD Engine Coolant Thermostat Housing
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | All Trims | 8 Cyl 6.0L
$13.19
Add to Cart
View Related Parts
OEM (Genuine)
2003 GMC Sierra 2500 HD Housing-Engine Coolant Thermostat
PartNumber:
97383583
VEHICLE SPECIFIC
Product Specifications
Notes:
All Models; 6.6l; 6.6 Liter Turbo Diesel
Other Names:
Thermostat Housing
Item Dimensions:
21.0 x 7.2 x 5.7 inches
Item Weight:
2.80 Pounds
Fitment Type:
Direct Replacement
Replaces:
97222428
Part Description:
2003 GMC Sierra 2500 HD Housing-Engine Coolant Thermostat
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
View Related Parts
OEM (Genuine)
2003 GMC Sierra 2500 HD Engine Coolant Outlet
PartNumber:
12559861
VEHICLE SPECIFIC
Product Specifications
Notes:
All Models; 8.1l; Water Outlet; 8.1 Liter Gas
Other Names:
Thermostat Housing, Thermostat Outlet
Item Dimensions:
4.4 x 4.5 x 4.2 inches
Item Weight:
0.70 Pounds
Fitment Type:
Direct Replacement
Part Description:
2003 GMC Sierra 2500 HD Engine Coolant Outlet
More Info
Vehicle Fitment
2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 8.1 L GAS
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