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Get affordable Oldsmobile Alero expansion tanks you deserve. In just 10 minutes, you could save up to 80% with PartsGeek. Save time and dollars on your next Alero 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 $19.73 and $54.98

Oldsmobile Alero Expansion Tank Reviews
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Shop Oldsmobile Alero Replacement Expansion Tank

The expansion tank helps retain coolant in a reservoir which has been forced out of the radiator under pressure. The expansion tank therefore helps keep the radiator cool so that your vehicle does not overheat and leaves you stranded. Over time this part may need to be replaced and therefore you will need to get a new one at some time. Fortunately there are many places where you can get one and at a good price. Find the expansion tank for you Alero at Parts Geek. With this part you will be sure to help retain the condition of your vehicle.

We stock these Expansion Tank brands for the Oldsmobile Alero: ReplacementDormanAction CrashSKPDIY SolutionsBrock

Select your Alero year

Review Fitment Notes
Showing 19 of 78 Results
Replacement Expansion Tank - for 2002 Oldsmobile Alero 3.4L V6 - 123-011 Click to Enlarge
5 Stars
Replacement 123-011
Expansion Tank
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Part Number: 123-011
Brand: Replacement
Notes: Engine Coolant Reservoir -- ENGINE COOLANT RADIATOR OVERFLOW TANK, WITH CAP
Condition: New
Shipping Options: Free Ground Shipping
$31.95
with FREE Shipping
(59) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2002 Oldsmobile Alero 3.4L V6
Replacement Expansion Tank - for 1999 Oldsmobile Alero 2.4L 4 Cyl - 123-011 Click to Enlarge
5 Stars
Replacement 123-011
Expansion Tank
Loading Reviews...
Part Number: 123-011
Brand: Replacement
Notes: Engine Coolant Reservoir -- ENGINE COOLANT RADIATOR OVERFLOW TANK, WITH CAP
Condition: New
Shipping Options: Free Ground Shipping
$31.95
with FREE Shipping
(59) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
1999 Oldsmobile Alero 2.4L 4 Cyl
Replacement Expansion Tank - for 2000 Oldsmobile Alero 2.4L 4 Cyl - 123-011 Click to Enlarge
5 Stars
Replacement 123-011
Expansion Tank
Loading Reviews...
Part Number: 123-011
Brand: Replacement
Notes: Engine Coolant Reservoir -- ENGINE COOLANT RADIATOR OVERFLOW TANK, WITH CAP
Condition: New
Shipping Options: Free Ground Shipping
$31.95
with FREE Shipping
(59) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2000 Oldsmobile Alero 2.4L 4 Cyl
Replacement Expansion Tank - for 2001 Oldsmobile Alero 2.4L 4 Cyl - 123-011 Click to Enlarge
5 Stars
Replacement 123-011
Expansion Tank
Loading Reviews...
Part Number: 123-011
Brand: Replacement
Notes: Engine Coolant Reservoir -- ENGINE COOLANT RADIATOR OVERFLOW TANK, WITH CAP
Condition: New
Shipping Options: Free Ground Shipping
$31.95
with FREE Shipping
(59) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2001 Oldsmobile Alero 2.4L 4 Cyl
Replacement Expansion Tank - for 2003 Oldsmobile Alero 2.2L 4 Cyl - 123-011 Click to Enlarge
5 Stars
Replacement 123-011
Expansion Tank
Loading Reviews...
Part Number: 123-011
Brand: Replacement
Notes: Engine Coolant Reservoir -- ENGINE COOLANT RADIATOR OVERFLOW TANK, WITH CAP
Condition: New
Shipping Options: Free Ground Shipping
$31.95
with FREE Shipping
(59) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2003 Oldsmobile Alero 2.2L 4 Cyl
Replacement Expansion Tank - for 2004 Oldsmobile Alero 2.2L 4 Cyl - 123-011 Click to Enlarge
5 Stars
Replacement 123-011
Expansion Tank
Loading Reviews...
Part Number: 123-011
Brand: Replacement
Notes: Engine Coolant Reservoir -- ENGINE COOLANT RADIATOR OVERFLOW TANK, WITH CAP
Condition: New
Shipping Options: Free Ground Shipping
$31.95
with FREE Shipping
(59) In Stock
This Part Fits:
Catalog: E
Vehicle Engine
2004 Oldsmobile Alero 2.2L 4 Cyl
Front Dorman Expansion Tank - for 1999 Oldsmobile Alero 3.4L V6 - 603-109 Click to Enlarge
4.9 Stars
Dorman 603-109
Expansion Tank
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Part Number: 603-109
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
$26.18
(85) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1999 Oldsmobile Alero 3.4L V6
Front Dorman Expansion Tank - for 2000 Oldsmobile Alero 3.4L V6 - 603-109 Click to Enlarge
4.9 Stars
Dorman 603-109
Expansion Tank
Loading Reviews...
Part Number: 603-109
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
$26.18
(85) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2000 Oldsmobile Alero 3.4L V6
Front Dorman Expansion Tank - for 2001 Oldsmobile Alero 3.4L V6 - 603-109 Click to Enlarge
4.9 Stars
Dorman 603-109
Expansion Tank
Loading Reviews...
Part Number: 603-109
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
$26.18
(85) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 Oldsmobile Alero 3.4L V6
Front Dorman Expansion Tank - for 2003 Oldsmobile Alero 3.4L V6 - 603-109 Click to Enlarge
4.9 Stars
Dorman 603-109
Expansion Tank
Loading Reviews...
Part Number: 603-109
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
$26.18
(85) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 Oldsmobile Alero 3.4L V6
Front Dorman Expansion Tank - for 2004 Oldsmobile Alero 3.4L V6 - 603-109 Click to Enlarge
4.9 Stars
Dorman 603-109
Expansion Tank
Loading Reviews...
Part Number: 603-109
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
$26.18
(85) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Oldsmobile Alero 3.4L V6
Front Dorman Expansion Tank - for 2002 Oldsmobile Alero 3.4L V6 - 603-109 Click to Enlarge
4.9 Stars
Dorman 603-109
Expansion Tank
Loading Reviews...
Part Number: 603-109
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
$26.18
(85) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 Oldsmobile Alero 3.4L V6
Dorman Expansion Tank - for 2003 Oldsmobile Alero - W0133-2051490 Click to Enlarge
5 Stars
Dorman W0133-2051490
Expansion Tank
Loading Reviews...
Part Number: W0133-2051490
Brand: Dorman
Product Remark: w/Sensor
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$80.17
Our Price: $29.58
(1) In Stock
This Part Fits:
Catalog: A
Vehicle
2003 Oldsmobile Alero
Dorman Expansion Tank - for 1999 Oldsmobile Alero - W0133-2051490 Click to Enlarge
5 Stars
Dorman W0133-2051490
Expansion Tank
Loading Reviews...
Part Number: W0133-2051490
Brand: Dorman
Product Remark: w/Sensor
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$80.17
Our Price: $29.58
(1) In Stock
This Part Fits:
Catalog: A
Vehicle
1999 Oldsmobile Alero
Dorman Expansion Tank - for 2001 Oldsmobile Alero - W0133-2051490 Click to Enlarge
5 Stars
Dorman W0133-2051490
Expansion Tank
Loading Reviews...
Part Number: W0133-2051490
Brand: Dorman
Product Remark: w/Sensor
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$80.17
Our Price: $29.58
(1) In Stock
This Part Fits:
Catalog: A
Vehicle
2001 Oldsmobile Alero
Action Crash Expansion Tank - for 2004 Oldsmobile Alero - GM3014120 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: GM3014120
Brand: Action Crash
Notes: COOLANT RECOVERY TANK WITH CAP
Quality: Premium - High quality new replacement part.
Condition: New
Shipping Options: Ground
List Price:
$103.45
Our Price: $54.98
(10) In Stock
This Part Fits:
Catalog: D
Vehicle Notes
2004 Oldsmobile Alero COOLANT RECOVERY TANK WITH CAP
SKP Expansion Tank - for 2004 Oldsmobile Alero 3.4L V6 - SK603109 Click to Enlarge
5 Stars
SKP SK603109
Expansion Tank
Loading Reviews...
Part Number: SK603109
Brand: SKP
Notes: Engine Coolant Reservoir
  • OE Style for easy replacement and fitment
Condition: New
Shipping Options: Ground
$19.73
View Details
This Part Fits:
Catalog: T
Vehicle Engine
2004 Oldsmobile Alero 3.4L V6
DIY Solutions Expansion Tank - for 2004 Oldsmobile Alero - HVA02640 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: HVA02640
Brand: DIY Solutions
Notes: Engine Coolant Reservoir
Condition: New
Shipping Options: Free Ground Shipping
$40.95
with FREE Shipping
(20) In Stock
This Part Fits:
Catalog: Q
Vehicle
2004 Oldsmobile Alero
Brock Expansion Tank - for 2004 Oldsmobile Alero - 1667-0002 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 1667-0002
Brand: Brock
Notes: Engine Coolant Reservoir -- 99-03 Chevy Malibu Coolant Recovery Tank with Cap 04-05 Chevy Malibu Classic 99-05 Chevy Cavalier 99-05 Pontiac Grand Am 99-04 Oldsmobile Alero 03-06 Chevy SSR 99-05 Pontiac Sunfire 99 Oldsmobile Cutlass
Condition: New
Shipping Options: Free Ground Shipping
$47.98
with FREE Shipping
(26) In Stock
This Part Fits:
Catalog: K
Vehicle
2004 Oldsmobile Alero

Related Cooling System Parts

Expansion Tanks available for the following Oldsmobile Alero years: 2004, 2003, 2002, 2001, 2000, 1999, 04, 03, 02, 01, 00, 99. This part is also sometimes called Oldsmobile Alero Radiator Overflow Tank. We stock expansion tank parts for most Oldsmobile models including Intrigue, Cutlass, Aurora, 88, Achieva, Bravada, 98, LSS, Toronado and Regency.

Oldsmobile Alero Expansion Tank Reviews
3 of 5
Verified Customer
7/26/14 11:56 PM - USA

This part came in super quick and was the exact fit for my car. I had no problem installing the part. It was exactly what i needed.

Thanks - Quick Delivery and perfect fit

- 1999 Oldsmobile Alero Expansion Tank
5 of 5
Verified Customer
8/4/14 10:45 PM - USA

Part came in a timely manner. Was as described. Fit like OEM. Included pressure cap as in the picture. Included low fluid level port. - expansion tank

- 1999 Oldsmobile Alero Expansion Tank
5 of 5
Verified Customer
6/25/15 01:59 PM - USA

Very happy!Looks as though you have plenty of happy customers! - Jen

- 2001 Oldsmobile Alero Expansion Tank
5 of 5
Verified Customer
7/24/19 07:35 AM - USA

I received the product on time and it is exactly as described. Would order from this company again. - Good service

- 2004 Oldsmobile Alero Expansion Tank
5 of 5
Verified Customer
7/23/20 07:13 PM - USA

The past got here sooner then expected and it was a perfect match, couldn’t be happier. The prices are hats to beat and the quality of parts are out of this world. Keep up the good work!!! - Fantastic service & products

- 2000 Oldsmobile Alero Expansion Tank