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Get affordable Cadillac Seville expansion tanks you deserve. In just 10 minutes, you could save up to 80% with PartsGeek. Save time and dollars on your next Seville 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 $16.98 and $124.95

Cadillac Seville Expansion Tank Reviews
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Shop Cadillac Seville Replacement Expansion Tank

Knowing a good auto parts person is an important detail when you drive a vehicle with top-quality manufacturing like a Cadillac Seville, and other similar models, because repairs will likely be costly. The Cadillac Seville is a great vehicle that will provide great handling as well as optimal comfort wherever the road takes you. Genuine Cadillac cars include a combination of lavish design in addition to unparalleled operation. When buying a ride whose focus is on luxury, such as the Cadillac Seville it is important to be informed that fuel economy isn't usually affordable. Over the past several decades, Cadillac automobiles have been known as opulence in addition to superior design at a reasonable cost. When considering a reliable vehicle that has classy design, adequate space and has a small footprint, get a Top power and performance is a breeze with optional devices made to improve the power systems as well as front end components. A Cadillac Seville Expansion Tank allows the gas in the radiator to swell because of the higher temperature and rising pressure. Cadillac Seville Expansion Tanks provide room for the cooling fluid to expand as temperatures rise, saving the cooling system from cracking or boiling over, or cooling fluid from overflowing from the vehicle's cooling system. The Cadillac Seville Expansion Tank can begin to leak due to inclement weather or simple wear; if this occurs a new unit must be installed to maintain your cooling system in perfect shape. Without a Cadillac Seville Expansion Tank on a vehicle, the coolant that is released by the pressure would leak onto the road which is harmful to the environment.

We stock these Expansion Tank brands for the Cadillac Seville: ReplacementDormanAction CrashSKPDIY Solutions

Select your Seville year

Review Fitment Notes
Showing 19 of 71 Results
Replacement Expansion Tank - for 1997 Cadillac Seville 4.6L V8 - 123-015 Click to Enlarge
Replacement Expansion Tank - for 1997 Cadillac Seville 4.6L V8 - 123-015 Click to Enlarge
4.3 Stars
Replacement 123-015
Expansion Tank
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Part Number: 123-015
Brand: Replacement
Notes: Engine Coolant Reservoir -- ENGINE COOLANT RADIATOR OVERFLOW TANK, WITH CAP
Product Remark: 4.6L 4.9L V8
Condition: New
Shipping Options: Free Ground Shipping
$53.95
with FREE Shipping
View Details
This Part Fits:
Catalog: E
Vehicle Engine
1997 Cadillac Seville 4.6L V8
Front Dorman Expansion Tank - for 2003 Cadillac Seville 4.6L V8 - 603-236 Click to Enlarge
4.9 Stars
Dorman 603-236
Expansion Tank
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Part Number: 603-236
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
$81.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 Cadillac Seville 4.6L V8
Front Dorman Expansion Tank - for 2002 Cadillac Seville 4.6L V8 - 603-236 Click to Enlarge
4.9 Stars
Dorman 603-236
Expansion Tank
Loading Reviews...
Part Number: 603-236
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
$81.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 Cadillac Seville 4.6L V8
Front Dorman Expansion Tank - for 2001 Cadillac Seville 4.6L V8 - 603-236 Click to Enlarge
4.9 Stars
Dorman 603-236
Expansion Tank
Loading Reviews...
Part Number: 603-236
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
$81.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 Cadillac Seville 4.6L V8
Front Dorman Expansion Tank - for 1999 Cadillac Seville 4.6L V8 - 603-236 Click to Enlarge
4.9 Stars
Dorman 603-236
Expansion Tank
Loading Reviews...
Part Number: 603-236
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
$81.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1999 Cadillac Seville 4.6L V8
Front Dorman Expansion Tank - for 2000 Cadillac Seville 4.6L V8 - 603-236 Click to Enlarge
4.9 Stars
Dorman 603-236
Expansion Tank
Loading Reviews...
Part Number: 603-236
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
$81.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2000 Cadillac Seville 4.6L V8
Dorman Expansion Tank - for 2000 Cadillac Seville - W0133-1820184 Click to Enlarge
4.9 Stars
Dorman W0133-1820184
Expansion Tank
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Part Number: W0133-1820184
Brand: Dorman
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$160.39
Our Price: $85.58
(13) In Stock
This Part Fits:
Catalog: A
Vehicle
2000 Cadillac Seville
Dorman Expansion Tank - for 2003 Cadillac Seville - W0133-1820184 Click to Enlarge
4.9 Stars
Dorman W0133-1820184
Expansion Tank
Loading Reviews...
Part Number: W0133-1820184
Brand: Dorman
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$160.39
Our Price: $85.58
(13) In Stock
This Part Fits:
Catalog: A
Vehicle
2003 Cadillac Seville
Dorman Expansion Tank - for 1999 Cadillac Seville - W0133-1820184 Click to Enlarge
4.9 Stars
Dorman W0133-1820184
Expansion Tank
Loading Reviews...
Part Number: W0133-1820184
Brand: Dorman
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$160.39
Our Price: $85.58
(13) In Stock
This Part Fits:
Catalog: A
Vehicle
1999 Cadillac Seville
Front Dorman Expansion Tank - for 1998 Cadillac Seville 4.6L V8 - 603-236 Click to Enlarge
4.9 Stars
Dorman 603-236
Expansion Tank
Loading Reviews...
Part Number: 603-236
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
$81.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1998 Cadillac Seville 4.6L V8
Dorman Expansion Tank - for 2002 Cadillac Seville - W0133-1820184 Click to Enlarge
4.9 Stars
Dorman W0133-1820184
Expansion Tank
Loading Reviews...
Part Number: W0133-1820184
Brand: Dorman
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$160.39
Our Price: $85.58
(13) In Stock
This Part Fits:
Catalog: A
Vehicle
2002 Cadillac Seville
Front Dorman Expansion Tank - for 2004 Cadillac Seville 4.6L V8 - 603-236 Click to Enlarge
4.9 Stars
Dorman 603-236
Expansion Tank
Loading Reviews...
Part Number: 603-236
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
$81.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Cadillac Seville 4.6L V8
Dorman Expansion Tank - for 2001 Cadillac Seville - W0133-1820184 Click to Enlarge
4.9 Stars
Dorman W0133-1820184
Expansion Tank
Loading Reviews...
Part Number: W0133-1820184
Brand: Dorman
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$160.39
Our Price: $85.58
(13) In Stock
This Part Fits:
Catalog: A
Vehicle
2001 Cadillac Seville
Dorman Expansion Tank - for 2004 Cadillac Seville - W0133-1820184 Click to Enlarge
4.9 Stars
Dorman W0133-1820184
Expansion Tank
Loading Reviews...
Part Number: W0133-1820184
Brand: Dorman
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$160.39
Our Price: $85.58
(13) In Stock
This Part Fits:
Catalog: A
Vehicle
2004 Cadillac Seville
Dorman Expansion Tank - for 1998 Cadillac Seville - W0133-1820184 Click to Enlarge
4.9 Stars
Dorman W0133-1820184
Expansion Tank
Loading Reviews...
Part Number: W0133-1820184
Brand: Dorman
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$160.39
Our Price: $85.58
(13) In Stock
This Part Fits:
Catalog: A
Vehicle
1998 Cadillac Seville
Front Dorman Expansion Tank - for 1997 Cadillac Seville 4.6L V8 - 603-133 Click to Enlarge
4.9 Stars
Dorman 603-133
Expansion Tank
Loading Reviews...
Part Number: 603-133
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
Shipping Options: Ground
$85.43
(24) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1997 Cadillac Seville 4.6L V8
Action Crash Expansion Tank - for 1993 Cadillac Seville - GM3014108 Click to Enlarge
4.8 Stars
Action Crash GM3014108
Expansion Tank
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Part Number: GM3014108
Brand: Action Crash
Notes: COOLANT RECOVERY TANK PLASTIC
Product Remark: 4.9L; Automatic Transmission
Quality: Premium - High quality new replacement part.
Condition: New
Shipping Options: Ground
List Price:
$23.37
Our Price: $16.98
(5) In Stock
This Part Fits:
Catalog: D
Vehicle Notes
1993 Cadillac Seville COOLANT RECOVERY TANK PLASTIC
SKP Expansion Tank - for 1997 Cadillac Seville 4.6L V8 - SK603133 Click to Enlarge
5 Stars
SKP SK603133
Expansion Tank
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Part Number: SK603133
Brand: SKP
Notes: Engine Coolant Reservoir
  • OE Style for easy replacement and fitment
Condition: New
Shipping Options: Ground
$40.98
(2) In Stock
This Part Fits:
Catalog: T
Vehicle Engine
1997 Cadillac Seville 4.6L V8
DIY Solutions Expansion Tank - for 2004 Cadillac Seville - HVA02801 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: HVA02801
Brand: DIY Solutions
Notes: Engine Coolant Reservoir
Condition: New
Shipping Options: Free Ground Shipping
$124.95
with FREE Shipping
(1) In Stock
This Part Fits:
Catalog: Q
Vehicle
2004 Cadillac Seville

Related Cooling System Parts

Research on Expansion Tank for Cadillac Seville

Cadillac Seville Expansion Tank

The Cadillac Seville delivers a dynamic, luxurious driving experience. To dominate on the road in your Seville, you must be able to depend on all of its systems to perform optimally. If your vehicle tends to overheat, you likely aren’t getting the most out of your vehicle. Instead of jeopardizing your ride, swap out your old, worn, or damaged Cadillac Seville expansion tank for a modern upgrade.

At PartsGeek.com, we have the parts you need to keep your Cadillac Seville running right. With our 30-day return policy, you can shop with confidence, knowing your are getting the perfect parts for your vehicle. Shop our selection of Cadillac expansion tanks below.

What is a Cadillac Seville expansion tank?

Like with all vehicles, a Cadillac Seville has an engine. To perform optimally, the Seville’s engine must not overheat. For that reason, the vehicle’s manufacturers equipped it with a comprehensive cooling system. To keep the car’s radiator in good shape, it has an expansion tank. The purpose of the tank is to collect and store excess coolant. Since fluid expands in the radiator, the tank works as a failsafe, guaranteeing the radiator has access to the coolant it needs to work properly. It also guarantees the Seville’s engine doesn’t waste coolant. Thus, without a properly functioning expansion tank, the entire cooling system might not perform adequately.

How much does a Cadillac Seville expansion tank cost?

Here at PartsGeek.com, Seville expansion tanks typically cost between $15 and $65. Vehicle model year, tank brand, and tank materials affect the actual cost of the expansion tank.

How do I know if I need a new Cadillac Seville expansion tank?

To keep your Cadillac Seville running optimally, its cooling system must work effectively. While many things can go wrong with a vehicle’s radiator, you should pay special attention to problems with the expansion tank. Specifically, watch for the following signs you need a new Cadillac Seville expansion tank:

  • Leaking fluid
  • Frequently adding coolant
  • Engine overheating

Expansion Tanks available for the following Cadillac Seville years: 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 04, 03, 02, 01, 00, 99, 98, 97, 96, 95, 94. This part is also sometimes called Cadillac Seville Radiator Overflow Tank. We stock expansion tank parts for most Cadillac models including DeVille, DTS, Eldorado, Fleetwood, Escalade, SRX, CTS, STS, ATS, Catera, Escalade ESV, Escalade EXT, 60 Special and CT6.

Cadillac Seville Expansion Tank Reviews
5 of 5
Verified Customer
3/30/14 06:02 AM - USA

Product is/as original equipment not a knockoff..have not installed on vehicle yet, will do so when time permits. - xxx

- 2001 Cadillac Seville Expansion Tank
5 of 5
Verified Customer
4/28/14 09:33 AM - USA

the service was great and the sales staff was well informed, the part came fast, went in fast, a perfect fit for the car. very satisfied will shop with them again. - bill

- 1992 Cadillac Seville Expansion Tank
5 of 5
Verified Customer
5/2/14 10:57 AM - USA

Part came quickly and packaged well. Prices seem to be set pretty well. I would buy from partsgeek.com again. - Dave

- 2002 Cadillac Seville Expansion Tank
5 of 5
Verified Customer
6/23/14 06:04 PM - USA

Got an exact fit/part at less than half the price my local shop quoted for this unit. Went in the tight spot and by me doing the work, I saved well over $100 verses my shop doing it. Thanks! - Just what the Dr. ordered!

- 2003 Cadillac Seville Expansion Tank
4 of 5
Verified Customer
12/3/14 07:25 AM - USA

The part was just right. The mechanic who installed it was impressed with the quality and what it cost me as well. The only problem was that it took 8 days from the moment I ordered it for the part to arrive. - lastmansloppy

- 2003 Cadillac Seville Expansion Tank
5 of 5
Verified Customer
12/7/14 01:35 PM - USA

I easily found this part on Parts Geek web site. Price was very good. Received part in one week, with Thanksgiving weekend in that week. - daddy's helper

- 2002 Cadillac Seville Expansion Tank