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GMC Sierra 2500 HD Expansion Tank Reviews
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Shop GMC Sierra 2500 HD 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 GMC Sierra 2500 HD 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 GMC Sierra 2500 HD: ReplacementDormanAction CrashAC DelcoSKPDIY SolutionsBrock

Expansion Tanks available for the following GMC Sierra 2500 HD years: 2019, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 19, 15, 14, 13, 12, 11, 10, 09, 08, 07, 06, 05, 04, 03, 02, 01. This part is also sometimes called GMC Sierra 2500 HD Radiator Overflow Tank. We stock expansion tank parts for most GMC models including Sierra 1500, Yukon, Safari, C7000 Topkick, Yukon XL 1500, C6000 Topkick, Envoy, C1500, Sonoma, Savana 3500, Envoy XL, K1500, Jimmy, Acadia, C6500 Topkick, C7500 Topkick, Sierra 3500, K2500, C4500 Topkick, Savana 2500, C3500HD, W4500 Forward, Savana 1500, Sierra 3500 HD, G2500, C2500, C3500, Terrain, K3500, K1500 Suburban, C5500 Topkick, G1500, Envoy XUV, G3500, K2500 Suburban, C5000 Topkick, Canyon, S15 Jimmy, C1500 Suburban and C8500 Topkick.

Select your Sierra 2500 HD year

Review Fitment Notes
Showing 20 of 358 Results
Replacement Expansion Tank - for 2008 GMC Sierra 2500 HD 6.0L V8 - 123-012 Click to Enlarge
5 Stars
Replacement 123-012
Expansion Tank
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Part Number: 123-012
Brand: Replacement
Notes: Engine Coolant Reservoir -- ENGINE COOLANT RADIATOR OVERFLOW TANK, WITH CAP
Condition: New
Shipping Options: Free Ground Shipping
$38.95
with FREE Shipping
(36) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2008 GMC Sierra 2500 HD 6.0L V8
Replacement Expansion Tank - for 2001 GMC Sierra 2500 HD 6.6L V8 - 123-118 Click to Enlarge
Website Reviews
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Part Number: 123-118
Brand: Replacement
Notes: Engine Coolant Reservoir -- 6.6L V8 Diesel; Engine Coolant Reservoir Expansion Tank
Product Remark: Includes Cap
Condition: New
Shipping Options: Free Ground Shipping
$62.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2001 GMC Sierra 2500 HD 6.6L V8
Replacement Expansion Tank - for 2002 GMC Sierra 2500 HD 6.6L V8 - 123-118 Click to Enlarge
Website Reviews
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Part Number: 123-118
Brand: Replacement
Notes: Engine Coolant Reservoir -- 6.6L V8 Diesel; Engine Coolant Reservoir Expansion Tank
Product Remark: Includes Cap
Condition: New
Shipping Options: Free Ground Shipping
$62.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2002 GMC Sierra 2500 HD 6.6L V8
Replacement Expansion Tank - for 2003 GMC Sierra 2500 HD 6.6L V8 - 123-118 Click to Enlarge
Website Reviews
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Part Number: 123-118
Brand: Replacement
Notes: Engine Coolant Reservoir -- 6.6L V8 Diesel; Engine Coolant Reservoir Expansion Tank
Product Remark: Includes Cap
Condition: New
Shipping Options: Free Ground Shipping
$62.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2003 GMC Sierra 2500 HD 6.6L V8
Replacement Expansion Tank - for 2004 GMC Sierra 2500 HD 6.6L V8 - 123-118 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 123-118
Brand: Replacement
Notes: Engine Coolant Reservoir -- 6.6L V8 Diesel; Engine Coolant Reservoir Expansion Tank
Product Remark: Includes Cap
Condition: New
Shipping Options: Free Ground Shipping
$62.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2004 GMC Sierra 2500 HD 6.6L V8
Replacement Expansion Tank - for 2005 GMC Sierra 2500 HD 6.6L V8 - 123-118 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 123-118
Brand: Replacement
Notes: Engine Coolant Reservoir -- 6.6L V8 Diesel; Engine Coolant Reservoir Expansion Tank
Product Remark: Includes Cap
Condition: New
Shipping Options: Free Ground Shipping
$62.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2005 GMC Sierra 2500 HD 6.6L V8
Replacement Expansion Tank - for 2006 GMC Sierra 2500 HD 6.6L V8 - 123-118 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 123-118
Brand: Replacement
Notes: Engine Coolant Reservoir -- 6.6L V8 Diesel; Engine Coolant Reservoir Expansion Tank
Product Remark: Includes Cap
Condition: New
Shipping Options: Free Ground Shipping
$62.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2006 GMC Sierra 2500 HD 6.6L V8
Front Dorman Expansion Tank - for 2005 GMC Sierra 2500 HD 6.6L V8 - 603-125 Click to Enlarge
5 Stars
Dorman 603-125
Expansion Tank
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Part Number: 603-125
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: Clear
Shipping Options: Ground
$44.43
(10) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 GMC Sierra 2500 HD 6.6L V8
Front Dorman Expansion Tank - for 2006 GMC Sierra 2500 HD 6.6L V8 - 603-125 Click to Enlarge
5 Stars
Dorman 603-125
Expansion Tank
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Part Number: 603-125
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: Clear
Shipping Options: Ground
$44.43
(10) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2006 GMC Sierra 2500 HD 6.6L V8
Action Crash Expansion Tank - for 2008 GMC Sierra 2500 HD - GM3014127 Click to Enlarge
5 Stars
Action Crash GM3014127
Expansion Tank
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Part Number: GM3014127
Brand: Action Crash
Notes: COOLANT RECOVERY TANK WITH CAP; 6.6L V8 TURBODIESEL
Product Remark: Automatic Transmission
Quality: Premium - High quality new replacement part.
Condition: New
Shipping Options: Ground
List Price:
$80.80
Our Price: $45.98
(1) In Stock
This Part Fits:
Catalog: D
Vehicle Notes
2008 GMC Sierra 2500 HD COOLANT RECOVERY TANK WITH CAP; 6.6L V8 TURBODIESEL
AC Delco Expansion Tank - for 2013 GMC Sierra 2500 HD 6.6L V8 LML VIN: 8 - 23106015 Click to Enlarge
Website Reviews
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Part Number: 23106015
Brand: AC Delco
Notes: Engine Coolant Reservoir -- New
Condition: New
Shipping Options: Ground
$229.98
(2) In Stock
This Part Fits:
Catalog: N
Vehicle Engine
2013 GMC Sierra 2500 HD 6.6L V8 LML VIN: 8
Front Dorman Expansion Tank - for 2003 GMC Sierra 2500 HD 6.0L V8 - 603-102 Click to Enlarge
4.9 Stars
Dorman 603-102
Expansion Tank
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Part Number: 603-102
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
Color: Clear
Package Contents: 1 Coolant Reservoir; 1 Cap
Shipping Options: Ground
$53.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 GMC Sierra 2500 HD 6.0L V8
Front Dorman Expansion Tank - for 2003 GMC Sierra 2500 HD 6.6L V8 - 603-125 Click to Enlarge
5 Stars
Dorman 603-125
Expansion Tank
Loading Reviews...
Part Number: 603-125
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: Clear
Shipping Options: Ground
$44.43
(10) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 GMC Sierra 2500 HD 6.6L V8
AC Delco Expansion Tank - for 2017 GMC Sierra 2500 HD 6.6L V8 L5P VIN: Y - Extended Cab Pickup 4dr - 84257137 Click to Enlarge
Website Reviews
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Part Number: 84257137
Brand: AC Delco
Notes: Engine Coolant Reservoir -- New
Condition: New
Shipping Options: Ground
$118.98
(18) In Stock
This Part Fits:
Catalog: N
Vehicle Body Engine
2017 GMC Sierra 2500 HD Extended Cab Pickup 4dr 6.6L V8 L5P VIN: Y
AC Delco Expansion Tank - for 2016 GMC Sierra 2500 HD 6.6L V8 LML VIN: 8 - 23106015 Click to Enlarge
Website Reviews
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Part Number: 23106015
Brand: AC Delco
Notes: Engine Coolant Reservoir -- New
Condition: New
Shipping Options: Ground
$229.98
(2) In Stock
This Part Fits:
Catalog: N
Vehicle Engine
2016 GMC Sierra 2500 HD 6.6L V8 LML VIN: 8
AC Delco Expansion Tank - for 2010 GMC Sierra 2500 HD 6.6L V8 - W0133-1820070 Click to Enlarge
Website Reviews
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Part Number: W0133-1820070
Brand: AC Delco
Notes: Genuine GM - (Includes Sensor)
Condition: New
Shipping Options: Ground, Overnight, 2 Day
OEM
List Price:
$64.95
Our Price: $56.58
(3) In Stock
This Part Fits:
Catalog: A
Vehicle Engine
2010 GMC Sierra 2500 HD 6.6L V8
Front Dorman Expansion Tank - for 2006 GMC Sierra 2500 HD 6.6L V8 - 603-125 Click to Enlarge
5 Stars
Dorman 603-125
Expansion Tank
Loading Reviews...
Part Number: 603-125
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: Clear
Shipping Options: Ground
$54.98
(6) In Stock
This Part Fits:
Catalog: C
Vehicle Engine
2006 GMC Sierra 2500 HD 6.6L V8
SKP Expansion Tank - for 2006 GMC Sierra 2500 HD 6.0L V8 - SK603102 Click to Enlarge
Website Reviews
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Part Number: SK603102
Brand: SKP
Notes: Engine Coolant Reservoir
  • OE Style for easy replacement and fitment
Condition: New
Shipping Options: Ground
$34.98
(58) In Stock
This Part Fits:
Catalog: T
Vehicle Engine
2006 GMC Sierra 2500 HD 6.0L V8
DIY Solutions Expansion Tank - for 2014 GMC Sierra 2500 HD GAS - HVA03529 Click to Enlarge
Website Reviews
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Part Number: HVA03529
Brand: DIY Solutions
Notes: Engine Coolant Reservoir -- excluding Diesel Engines
Condition: New
Shipping Options: Free Ground Shipping
$47.95
with FREE Shipping
View Details
This Part Fits:
Catalog: Q
Vehicle Engine
2014 GMC Sierra 2500 HD GAS
Brock Expansion Tank - for 2019 GMC Sierra 2500 HD Base 4WD 6.0L V8 Naturally Aspirated OHV GAS - Extended Cab Pickup 4dr - 1667-0008 Click to Enlarge
Website Reviews
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Part Number: 1667-0008
Brand: Brock
Notes: Engine Coolant Reservoir -- 07-19 GMC Truck Coolant Recovery Tank With Cap
Condition: New
Shipping Options: Free Ground Shipping
$46.98
with FREE Shipping
View Details
This Part Fits:
Catalog: K
Vehicle Sub Model Body Engine
2019 GMC Sierra 2500 HD Base 4WD Extended Cab Pickup 4dr 6.0L V8 Naturally Aspirated OHV GAS

Related Cooling System Parts

GMC Sierra 2500 HD Expansion Tank Reviews
4 of 5
Verified Customer
4/7/14 07:42 AM - USA

Didn't look like the right one when we first looked at it. But it was. Pretty easy to install. - GMC Coolant Overflow Tank

- 2003 GMC Sierra 2500 HD Expansion Tank
5 of 5
Verified Customer
12/21/16 08:47 AM - USA

Package was received on time and perfect conditions. - Mr. Leon

- 2008 GMC Sierra 2500 HD Expansion Tank
5 of 5
Verified Customer
3/30/20 02:48 PM - USA

Shipping was really quick received item sooner than expected. The fit was perfect, looks just like the original Expansion Tank. - Looks & Fits like original

- 2005 GMC Sierra 2500 HD Expansion Tank