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Get the Best Priced Chevrolet Trailblazer EXT Expansion Tank

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Get affordable Chevrolet Trailblazer EXT expansion tanks you deserve. In just 10 minutes, you could save up to 80% with PartsGeek. Save time and dollars on your next Trailblazer EXT radiator overflow tanks purchase. Over 12 Years of saving people money and providing great customer service. Check our low-cost options today. The average cost for expansion tank replacement is between $22.18 and $56.95

Chevrolet Trailblazer EXT Expansion Tank Reviews
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Shop Chevrolet Trailblazer EXT Replacement Expansion Tank

Search our online expansion tank catalog and find the lowest priced discount auto parts on the web. We sell wholesale to the public. We offer high quality new, OEM, aftermarket and remanufactured Chevrolet Trailblazer EXT Expansion Tank parts. We specialize in a wide-variety of high-quality car parts and accessories for your car, truck or SUV. Call toll free to order or place your order online via our secure checkout system. Our online parts catalog uses real-time inventory, so you can be assured the parts you buy are in stock at the time of ordering. Most orders are shipped the same day.

We stock these Expansion Tank brands for the Chevrolet Trailblazer EXT: DormanDIY Solutions

Select your Trailblazer EXT year

Review Fitment Notes
Showing 11 of 15 Results
Front Dorman Expansion Tank - for 2003 Chevrolet Trailblazer EXT 4.2L 6 Cyl - 603-126 Click to Enlarge
5 Stars
Dorman 603-126
Expansion Tank
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Part Number: 603-126
Brand: Dorman
Notes: Engine Coolant Reservoir
  • Direct replacement - this engine coolant reservoir matches the fit and function of the original part
  • Ideal solution - engineered for a seamless installation
  • Durable construction - manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design - backed by 100 years of automotive aftermarket experience
Position: Front
Condition: New
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: White
Shipping Options: Ground
$22.18
(12) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 Chevrolet Trailblazer EXT 4.2L 6 Cyl
Front Dorman Expansion Tank - for 2002 Chevrolet Trailblazer EXT 4.2L 6 Cyl - 603-126 Click to Enlarge
5 Stars
Dorman 603-126
Expansion Tank
Loading Reviews...
Part Number: 603-126
Brand: Dorman
Notes: Engine Coolant Reservoir
  • Direct replacement - this engine coolant reservoir matches the fit and function of the original part
  • Ideal solution - engineered for a seamless installation
  • Durable construction - manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design - backed by 100 years of automotive aftermarket experience
Position: Front
Condition: New
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: White
Shipping Options: Ground
$22.18
(12) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 Chevrolet Trailblazer EXT 4.2L 6 Cyl
Front Dorman Expansion Tank - for 2004 Chevrolet Trailblazer EXT 4.2L 6 Cyl - 603-126 Click to Enlarge
5 Stars
Dorman 603-126
Expansion Tank
Loading Reviews...
Part Number: 603-126
Brand: Dorman
Notes: Engine Coolant Reservoir
  • Direct replacement - this engine coolant reservoir matches the fit and function of the original part
  • Ideal solution - engineered for a seamless installation
  • Durable construction - manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design - backed by 100 years of automotive aftermarket experience
Position: Front
Condition: New
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: White
Shipping Options: Ground
$22.18
(12) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Chevrolet Trailblazer EXT 4.2L 6 Cyl
Front Dorman Expansion Tank - for 2005 Chevrolet Trailblazer EXT 4.2L 6 Cyl - 603-126 Click to Enlarge
5 Stars
Dorman 603-126
Expansion Tank
Loading Reviews...
Part Number: 603-126
Brand: Dorman
Notes: Engine Coolant Reservoir
  • Direct replacement - this engine coolant reservoir matches the fit and function of the original part
  • Ideal solution - engineered for a seamless installation
  • Durable construction - manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design - backed by 100 years of automotive aftermarket experience
Position: Front
Condition: New
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: White
Shipping Options: Ground
$22.18
(12) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 Chevrolet Trailblazer EXT 4.2L 6 Cyl
Front Dorman Expansion Tank - for 2006 Chevrolet Trailblazer EXT 4.2L 6 Cyl - 603-126 Click to Enlarge
5 Stars
Dorman 603-126
Expansion Tank
Loading Reviews...
Part Number: 603-126
Brand: Dorman
Notes: Engine Coolant Reservoir
  • Direct replacement - this engine coolant reservoir matches the fit and function of the original part
  • Ideal solution - engineered for a seamless installation
  • Durable construction - manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design - backed by 100 years of automotive aftermarket experience
Position: Front
Condition: New
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: White
Shipping Options: Ground
$22.18
(12) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2006 Chevrolet Trailblazer EXT 4.2L 6 Cyl
Dorman Expansion Tank - for 2002 Chevrolet Trailblazer EXT - W0133-1956981 Click to Enlarge
5 Stars
Dorman W0133-1956981
Expansion Tank
Loading Reviews...
Part Number: W0133-1956981
Brand: Dorman
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$54.84
Our Price: $43.58
(15) In Stock
This Part Fits:
Catalog: A
Vehicle
2002 Chevrolet Trailblazer EXT
DIY Solutions Expansion Tank - for 2006 Chevrolet Trailblazer EXT 5.3L V8 - HVA02737 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: HVA02737
Brand: DIY Solutions
Notes: Engine Coolant Reservoir -- V8 5.3L; without Low Fluid Sensor; Without Low Fluid Sensor
Condition: New
Shipping Options: Free Ground Shipping
$56.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
2006 Chevrolet Trailblazer EXT 5.3L V8
DIY Solutions Expansion Tank - for 2005 Chevrolet Trailblazer EXT 4.2L 6 Cyl - HVA02737 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: HVA02737
Brand: DIY Solutions
Notes: Engine Coolant Reservoir -- L6 4.2L; without Low Fluid Sensor; Without Low Fluid Sensor
Condition: New
Shipping Options: Free Ground Shipping
$56.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
2005 Chevrolet Trailblazer EXT 4.2L 6 Cyl
DIY Solutions Expansion Tank - for 2004 Chevrolet Trailblazer EXT 5.3L V8 - HVA02737 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: HVA02737
Brand: DIY Solutions
Notes: Engine Coolant Reservoir -- V8 5.3L; without Low Fluid Sensor; Without Low Fluid Sensor
Condition: New
Shipping Options: Free Ground Shipping
$56.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
2004 Chevrolet Trailblazer EXT 5.3L V8
DIY Solutions Expansion Tank - for 2003 Chevrolet Trailblazer EXT 4.2L 6 Cyl - HVA02737 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: HVA02737
Brand: DIY Solutions
Notes: Engine Coolant Reservoir -- L6 4.2L; without Low Fluid Sensor; Without Low Fluid Sensor
Condition: New
Shipping Options: Free Ground Shipping
$56.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
2003 Chevrolet Trailblazer EXT 4.2L 6 Cyl
DIY Solutions Expansion Tank - for 2002 Chevrolet Trailblazer EXT 4.2L 6 Cyl - HVA02737 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: HVA02737
Brand: DIY Solutions
Notes: Engine Coolant Reservoir -- L6 4.2L; without Low Fluid Sensor; Without Low Fluid Sensor
Condition: New
Shipping Options: Free Ground Shipping
$56.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
2002 Chevrolet Trailblazer EXT 4.2L 6 Cyl

Related Cooling System Parts

Expansion Tanks available for the following Chevrolet Trailblazer EXT years: 2006, 2005, 2004, 2003, 2002, 06, 05, 04, 03, 02. This part is also sometimes called Chevrolet Trailblazer EXT Radiator Overflow Tank. We stock expansion tank parts for most Chevrolet models including Malibu, Silverado 1500, Impala, Corvette, Spark, Camaro, Equinox, Cruze, Silverado 2500 HD, Cavalier, Sonic, Aveo, Astro, Tahoe, K1500, S10, Suburban 1500, Caprice, Trailblazer, C1500, Metro, Blazer, Express 3500, Monte Carlo, Express 1500, G20, C3500, Avalanche 1500, Express 2500, HHR, Spark EV, Colorado, Classic, S10 Blazer, G30, SSR, Cobalt, Silverado 3500, K3500 and Aveo5.

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