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GMC Replacement Radiator Overflow Tank

GMC Expansion Tank In recent years the sporty looks and budget-friendly pricing of GMC vehicles have featured fluid maneuverability and superior fuel efficiency. Security and dependability are key focuses for GMC, a well-known vehicle manufacturer with a reputation for value. For the optimum in crash protection and fuel savings car shoppers believe in vehicles crafted by GMC. For hardworking quality and muscle from a car, car buyers can rely on GMC. A stunning GMC gives you an unmatched powerhouse engine alongside its sensitive suspension. Excellent power and automotive performance rely on top-notch components and accessories. Your car's GMC Expansion Tank allows the gas in a cooling system to expand because of the higher temperature and increasing pressure. Without a GMC Expansion Tank on a car, the antifreeze that is typically released under pressure would most likely spill onto the road which can be destructive to the environment. Your GMC Expansion Tank protects your radiator by allowing a space for coolant to expand as temperatures rise. A GMC needs to be maintained in the best working order and maintained regularly; that means buying the right new parts.

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Review Fitment Notes
Replacement Expansion Tank - for 2006 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
(6) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2006 GMC Sierra 2500 HD 6.6L V8
Front Dorman Expansion Tank - for 2000 GMC Sierra 1500 4.3L V6 - 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
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: Clear
Shipping Options: Ground
$53.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2000 GMC Sierra 1500 4.3L V6
Front Dorman Expansion Tank - for 1990 GMC C7000 Topkick 6.0L V8 - 603-5604 Click to Enlarge
5 Stars
Dorman 603-5604
Expansion Tank
Loading Reviews...
Part Number: 603-5604
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: Black/White
Shipping Options: Ground
$21.18
(14) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1990 GMC C7000 Topkick 6.0L V8
Front Dorman Expansion Tank - for 2002 GMC Envoy 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
Color: White
Package Contents: 1 Coolant Reservoir; 1 Cap
Shipping Options: Ground
$25.18
(14) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 GMC Envoy 4.2L 6 Cyl
Front Dorman Expansion Tank - for 1999 GMC Sierra 1500 4.3L V6 - 603-102 Click to Enlarge
4.9 Stars
Dorman 603-102
Expansion Tank
Loading Reviews...
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
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: Clear
Shipping Options: Ground
$53.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1999 GMC Sierra 1500 4.3L V6
Front Dorman Expansion Tank - for 2005 GMC Sierra 1500 4.3L V6 - 603-102 Click to Enlarge
4.9 Stars
Dorman 603-102
Expansion Tank
Loading Reviews...
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
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: Clear
Shipping Options: Ground
$53.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 GMC Sierra 1500 4.3L V6
Front Dorman Expansion Tank - for 2001 GMC Sierra 1500 4.3L V6 - 603-102 Click to Enlarge
4.9 Stars
Dorman 603-102
Expansion Tank
Loading Reviews...
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
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: Clear
Shipping Options: Ground
$53.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 GMC Sierra 1500 4.3L V6
Front Dorman Expansion Tank - for 2001 GMC Yukon XL 1500 5.3L V8 - 603-102 Click to Enlarge
4.9 Stars
Dorman 603-102
Expansion Tank
Loading Reviews...
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
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: Clear
Shipping Options: Ground
$53.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 GMC Yukon XL 1500 5.3L V8
Front Dorman Expansion Tank - for 1996 GMC C7000 Topkick 6.0L V8 - 603-5604 Click to Enlarge
5 Stars
Dorman 603-5604
Expansion Tank
Loading Reviews...
Part Number: 603-5604
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: Black/White
Shipping Options: Ground
$21.18
(14) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1996 GMC C7000 Topkick 6.0L V8
Front Dorman Expansion Tank - for 2004 GMC Sierra 1500 4.3L V6 - 603-102 Click to Enlarge
4.9 Stars
Dorman 603-102
Expansion Tank
Loading Reviews...
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
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: Clear
Shipping Options: Ground
$53.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 GMC Sierra 1500 4.3L V6
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
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
(9) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 GMC Sierra 2500 HD 6.6L V8
Front Dorman Expansion Tank - for 2002 GMC Sierra 1500 4.3L V6 - 603-102 Click to Enlarge
4.9 Stars
Dorman 603-102
Expansion Tank
Loading Reviews...
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
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: Clear
Shipping Options: Ground
$53.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 GMC Sierra 1500 4.3L V6
Front Dorman Expansion Tank - for 2005 GMC Yukon 4.8L V8 - 603-102 Click to Enlarge
4.9 Stars
Dorman 603-102
Expansion Tank
Loading Reviews...
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
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: Clear
Shipping Options: Ground
$53.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 GMC Yukon 4.8L V8
Front Dorman Expansion Tank - for 1999 GMC W4500 Forward - 603-5603 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 603-5603
Brand: Dorman
Notes: Engine Coolant Reservoir -- From 1/01/99
  • 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
Color: Clear
Shipping Options: Ground
$77.43
(5) In Stock
This Part Fits:
Catalog: B
Vehicle
1999 GMC W4500 Forward
Front Dorman Expansion Tank - for 1992 GMC C6000 Topkick 6.0L V8 - 603-5604 Click to Enlarge
5 Stars
Dorman 603-5604
Expansion Tank
Loading Reviews...
Part Number: 603-5604
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: Black/White
Shipping Options: Ground
$21.18
(14) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1992 GMC C6000 Topkick 6.0L V8
Action Crash Expansion Tank - for 1994 GMC Sonoma - GM3014102 Click to Enlarge
5 Stars
Action Crash GM3014102
Expansion Tank
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Part Number: GM3014102
Brand: Action Crash
Notes: COOLANT RECOVERY TANK
Product Remark: 4.3L; Automatic or Manual Transmission
Quality: Premium - High quality new replacement part.
Condition: New
Shipping Options: Ground
List Price:
$100.52
Our Price: $25.98
View Details
This Part Fits:
Catalog: D
Vehicle Notes
1994 GMC Sonoma COOLANT RECOVERY TANK
Front Dorman Expansion Tank - for 2013 GMC Sierra 1500 6.0L V8 - 603-367 Click to Enlarge
Website Reviews
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Part Number: 603-367
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: Black and Clear
Package Contents: 1 Coolant Reservoir; 2 Hose; 2 Reservoir Cap
Shipping Options: Ground
$63.98
(1) In Stock
This Part Fits:
Catalog: F
Vehicle Engine
2013 GMC Sierra 1500 6.0L V8
Genuine Expansion Tank - for 2003 GMC Savana 3500 - W0133-1820050 Click to Enlarge
Website Reviews
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Part Number: W0133-1820050
Brand: Genuine
Notes: w/ Tether
Condition: New
Shipping Options: Ground, Overnight, 2 Day
OEM
List Price:
$97.21
Our Price: $87.58
View Details
This Part Fits:
Catalog: A
Vehicle
2003 GMC Savana 3500
Front Dorman Expansion Tank - for 2006 GMC Sierra 1500 5.3L V8 FLEX - 603-102 Click to Enlarge
4.9 Stars
Dorman 603-102
Expansion Tank
Loading Reviews...
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
Package Contents: 1 Coolant Reservoir; 1 Cap
Color: Clear
Shipping Options: Ground
$49.98
(9) In Stock
This Part Fits:
Catalog: C
Vehicle Engine
2006 GMC Sierra 1500 5.3L V8 FLEX
SKP Expansion Tank - for 2006 GMC Sierra 1500 4.3L V6 - 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
(59) In Stock
This Part Fits:
Catalog: T
Vehicle Engine
2006 GMC Sierra 1500 4.3L V6
DIY Solutions Expansion Tank - for 2007 GMC Sierra 1500 - HVA02657 Click to Enlarge
Website Reviews
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Part Number: HVA02657
Brand: DIY Solutions
Notes: Engine Coolant Reservoir
Condition: New
Shipping Options: Free Ground Shipping
$58.95
with FREE Shipping
(20) In Stock
This Part Fits:
Catalog: Q
Vehicle
2007 GMC Sierra 1500
Brock Expansion Tank - for 1999 GMC C1500 Sierra SLE RWD 5.7L V8 Naturally Aspirated OHV GAS - Standard Cab Pickup 2dr - 1667-0001 Click to Enlarge
Website Reviews
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Part Number: 1667-0001
Brand: Brock
Notes: Engine Coolant Reservoir -- 88-99 GM Pickup 1500 Coolant Recovery Tank with Cap Without Sensor 88-02 GM Pickup 2500/3500 95-99 Chevy Tahoe 00 Tahoe Classic 92-99 GM Suburban 92-99 GMC Yukon 00 Yukon Denali 92-94 Chevy Blazer 99-00 Cadillac Escalade
Condition: New
Shipping Options: Free Ground Shipping
$37.98
with FREE Shipping
(99) In Stock
This Part Fits:
Catalog: K
Vehicle Sub Model Body Engine Notes
1999 GMC C1500 Sierra SLE RWD Standard Cab Pickup 2dr 5.7L V8 Naturally Aspirated OHV GAS Old Body Style with 5.7L engines ONLY
Front SKP Expansion Tank - for 2019 GMC Sierra 1500 6.2L V8 - SK603973 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: SK603973
Brand: SKP
Notes: Engine Coolant Reservoir
  • OE Style for easy replacement and fitment
Position: Front
Condition: New
Shipping Options: Free Ground Shipping
$43.98
with FREE Shipping
View Details
This Part Fits:
Catalog: S
Vehicle Engine
2019 GMC Sierra 1500 6.2L V8
AC Delco Expansion Tank - for 2019 GMC Sierra 2500 HD 6.6L V8 L5P VIN: Y - Crew 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
(7) In Stock
This Part Fits:
Catalog: N
Vehicle Body Engine
2019 GMC Sierra 2500 HD Crew Cab Pickup 4dr 6.6L V8 L5P VIN: Y

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Some of our Customer Reviews
5 of 5
Verified Customer
5/5/13 08:14 PM - USA

The part was as advertised, great price and it arrived well within the time envelope. Thanks Parts Geek - Allan H.

- 1999 GMC K1500 Suburban Expansion Tank
5 of 5
Verified Customer
6/15/13 08:14 AM - USA

Great product at a low price! Made my engine compartment look more complete! - Almazan86

- 1993 GMC C1500 Expansion Tank