Contact Us Live Chat or 1-888-220-8330
Search Bar
Search by Part Number or Keywords
  • My Garage
  • My Account
  • Cart
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Help Center
< Back ×
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Login/Register My Account Track Order Help Center Contact Us
Replacement and OEM Parts for 2003 Chevrolet Trailblazer EXT Thermostat and Housing Assembly

2003 Chevrolet Trailblazer EXT Thermostat and Housing Assembly

My Vehicle Change Vehicle
2003 Chevrolet Trailblazer EXT
Change Vehicle
Vehicle Options
We need more information about your vehicle to make a correct determination of fitment
< Back to View All
Cooling Systems, Fans & Radiators
  • Department
  • Brands
  • Prices

11 Products found

Show Item:
  • 30
  • 60
  • 90
Sort by:
Recommended
Filter
Sort
View by
  • OEM 2003 Chevrolet Trailblazer EXT Thermostat Unit Diagram - 12600171
    View Related Parts

    OEM (Genuine) 2003 Chevrolet Trailblazer EXT Thermostat Unit

    PartNumber: 12600171
    OEM 2003 Chevrolet Trailblazer EXT Thermostat Unit - 12600171
    Product Specifications
    • Notes: 5.3 Liter
    • Other Names: Thermostat, Thermostat Unit
    • Item Dimensions: 3.1 x 3.1 x 3.1 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12581595
    • Part Description: 2003 Chevrolet Trailblazer EXT Thermostat Unit
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | LS, LT, North Face | 8 Cyl 5.3 L GAS
    $21.43 MSRP: $40.48
    You Save: $19.05 (48%)
  • Gates Engine Coolant Thermostat With Housing And Seal for 2003 Chevrolet Trailblazer EXT - 34702

    Gates® Engine Coolant Thermostat With Housing And Seal for 2003 Chevrolet Trailblazer EXT

    PartNumber: 34702
    Product Specifications
    • Notes: W/GM Updated Replacement Water Pump; Incls Housing; 187 Degree; OE Temperature; Seal Incld
    • Check Valve: No
    • Electric: No
    • Jiggle Pin: Yes
    • Number of Bolt Holes: 2
    • Number of Seals: 1
    • OE Exact: No
    • Outlet Inside Diameter 1: 1.175"
    • Outlet Outside Diameter 1: 1.554"
    • Temperature (F): 187
    • Type: Integrated Housing Thermostat
    • UPC: 770075631569
    • Part Description: 2003 Chevrolet Trailblazer EXT Engine Coolant Thermostat With Housing And Seal
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | All Trims | 8 Cyl 5.3L
    $51.81
  • Four Seasons Engine Coolant Thermostat And Housing Assembly for 2003 Chevrolet Trailblazer EXT - 85580

    Four Seasons® Engine Coolant Thermostat And Housing Assembly for 2003 Chevrolet Trailblazer EXT

    PartNumber: 85580
    Product Specifications
    • Notes: w/Thermostat; w/Thermostat;Outlet w/Thermostat; w/Thermostat
    • Flange Thickness: 0.403
    • Gasket or Seal Included: Included
    • Inlet Port Diameter: 1.222
    • Material: Aluminum
    • Meets / Exceeds OEM: Yes
    • Overall Height IN: 2.400
    • Style: w/ Thermostat
    • Thermostat Included: Included
    • UPC: 096361855809
    • Part Description: 2003 Chevrolet Trailblazer EXT Engine Coolant Thermostat And Housing Assembly
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | All Trims | 8 Cyl 5.3L
    $22.96
  • OEM 2003 Chevrolet Trailblazer EXT Thermostat Unit Diagram - 12571261
    View Related Parts

    OEM (Genuine) 2003 Chevrolet Trailblazer EXT Thermostat Unit

    PartNumber: 12571261
    OEM 2003 Chevrolet Trailblazer EXT Thermostat Unit - 12571261
    Product Specifications
    • Notes: 5.3 Liter; S-Series
    • 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 Chevrolet Trailblazer EXT Thermostat Unit
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | LS, LT, North Face | 8 Cyl 5.3 L GAS
    $41.61 MSRP: $78.51
    You Save: $36.90 (48%)
  • Gates Engine Coolant Thermostat With Housing And Seal for 2003 Chevrolet Trailblazer EXT - 33939

    Gates® Engine Coolant Thermostat With Housing And Seal for 2003 Chevrolet Trailblazer EXT

    PartNumber: 33939
    Product Specifications
    • Notes: 192 Degree; OE Temperature; Seal Included
    • Check Valve: No
    • Electric: No
    • Jiggle Pin: Yes
    • Number of Bolt Holes: 2
    • Number of Seals: 1
    • OE Exact: No
    • Outlet Inside Diameter 1: 1.067"
    • Outlet Outside Diameter 1: 1.3"
    • Temperature (F): 192
    • Type: Integrated Housing Thermostat
    • UPC: 072053877229
    • Part Description: 2003 Chevrolet Trailblazer EXT Engine Coolant Thermostat With Housing And Seal
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | All Trims | 6 Cyl 4.2L
    $24.75
  • OEM 2003 Chevrolet Trailblazer EXT Thermostat Housing Diagram - 12620112
    View Related Parts

    OEM (Genuine) 2003 Chevrolet Trailblazer EXT Thermostat Housing

    PartNumber: 12620112
    OEM 2003 Chevrolet Trailblazer EXT Thermostat Housing - 12620112
    Product Specifications
    • Notes: 4.2 Liter; S-Series; Includes Thermostat.
    • Other Names: Thermostat Housing
    • Item Dimensions: 11.3 x 4.8 x 4.8 inches
    • Item Weight: 3.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12602913, 12572988, 12567750
    • Part Description: 2003 Chevrolet Trailblazer EXT Thermostat Housing
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | LS, LT, North Face | 6 Cyl 4.2 L GAS
    $61.25 MSRP: $115.56
    You Save: $54.31 (47%)
  • Gates Engine Coolant Thermostat With Housing And Seal for 2003 Chevrolet Trailblazer EXT - 33910

    Gates® Engine Coolant Thermostat With Housing And Seal for 2003 Chevrolet Trailblazer EXT

    PartNumber: 33910
    Product Specifications
    • Notes: W/OE or Most Aftermarket Water Pumps; 186 Degree; OE Temperature; Seal Incld
    • Check Valve: No
    • Electric: No
    • Jiggle Pin: Yes
    • Number of Bolt Holes: 2
    • Number of Seals: 1
    • OE Exact: No
    • Outlet Inside Diameter 1: 1.31"
    • Outlet Outside Diameter 1: 1.65"
    • Temperature (F): 187
    • Type: Integrated Housing Thermostat
    • UPC: 072053675979
    • Part Description: 2003 Chevrolet Trailblazer EXT Engine Coolant Thermostat With Housing And Seal
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | All Trims | 8 Cyl 5.3L
    $20.38
  • STANT Engine Coolant Thermostat and Housing Assembly for 2003 Chevrolet Trailblazer EXT - 14659

    STANT® Engine Coolant Thermostat and Housing Assembly for 2003 Chevrolet Trailblazer EXT

    PartNumber: 14659
    Product Specifications
    • Notes: Seal Included Seal Included; OE Temperature, Located on Drivers side
    • Flange Diameter (With Seal): 1.41"
    • Flange Diameter (Without Seal): 2.84"
    • Height from Flange to Bottom: 1.12"
    • OE Part Number: 12620112, 12572988, 12567750, 12602913, 24576961
    • Temperature (F): 187 Degrees
    • UPC: 033342042544
    • Part Description: 2003 Chevrolet Trailblazer EXT Engine Coolant Thermostat and Housing Assembly
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | All Trims | 6 Cyl 4.2L
    $29.41
  • STANT Engine Coolant Thermostat and Housing Assembly for 2003 Chevrolet Trailblazer EXT - 14298

    STANT® Engine Coolant Thermostat and Housing Assembly for 2003 Chevrolet Trailblazer EXT

    PartNumber: 14298
    Product Specifications
    • Notes: Seal Included Seal Included; W/OE or Most Aftermarket Water Pumps; OE Temperature; This part is also available in the Engine Coolant Thermostat Kit 102KT, which contains 10248 (Radiator Cap) and 74050 (Engine Coolant Temperature Sensor)
    • Bypass Plate Diameter: 1.45"
    • Flange Diameter (Without Seal): 2.55"
    • Height from Flange to Bottom: 1.88"
    • OE Part Number: 12571261, 12562740, 12561156, 12558853, 12572740, 12555717, 12558838, 12561157
    • Temperature (F): 186 Degrees
    • UPC: 033342497115
    • Part Description: 2003 Chevrolet Trailblazer EXT Engine Coolant Thermostat and Housing Assembly
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | All Trims | 8 Cyl 5.3L
  • STANT Engine Coolant Thermostat and Housing Assembly for 2003 Chevrolet Trailblazer EXT - 14296

    STANT® Engine Coolant Thermostat and Housing Assembly for 2003 Chevrolet Trailblazer EXT

    PartNumber: 14296
    Product Specifications
    • Notes: Seal Included Seal Included; W/OE or Most Aftermarket Water Pumps; Alternate Temperature
    • Temperature (F): 160 Degrees
    • UPC: 333420699302
    • Part Description: 2003 Chevrolet Trailblazer EXT Engine Coolant Thermostat and Housing Assembly
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | All Trims | 8 Cyl 5.3L
  • OEM 2003 Chevrolet Trailblazer EXT Water Outlet Diagram - 24576963
    View Related Parts

    OEM (Genuine) 2003 Chevrolet Trailblazer EXT Water Outlet

    PartNumber: 24576963
    OEM 2003 Chevrolet Trailblazer EXT Water Outlet - 24576963
    Product Specifications
    • Notes: 4.2 Liter
    • Other Names: Water Outlet
    • Item Dimensions: 11.5 x 5.3 x 5.1 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 Chevrolet Trailblazer EXT Water Outlet
    More Info
    Vehicle Fitment
    • 2003 Chevrolet Trailblazer EXT | LS, LT, North Face | 6 Cyl 4.2 L GAS