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Dorman Expansion Tank

We have 163 Items In-stock.
Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$29.22 List Price: $34.48 Save: $5.26 Availability: In Stock
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603703
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Does Not Include:   Hose
(see more)
Rating: (see review/s)

"excellent product. Came with new cap. R&R 10 minutes." posted by: on August 5, 2014

"This was a perfect replacement at an affordable cost. Fast delivery as well. So easy to install." posted by: jramm on May 1, 2014 view all 5 reviews

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$32.58 List Price: $38.44 Save: $5.86 Availability: In Stock
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603109
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Includes:   Level sensor
(see more)
Rating: (see review/s)

"Received the item installed it and the coolant sensor does not work had to install my old one back on my car will not purchase another item from here s two bad experiences is enough" posted by: on April 7, 2014

"This is the 5th tank I have had replaced in 2 years!! It is a piece of junk!! All of a sudden it will erupt a huge leak at the seams or seals and all the fluid wwill leak out. I hae a lifetime warranty of this inferior part and have to take the time to have my mechanic install it and pay him $35 ea time to do it and then take the part back to get my money back for buying yet another one. The Malibu has no other part for this car. My nexy car will not be a Chevy." posted by: Alex on May 23, 2011 view all 5 reviews

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$66.53 List Price: $78.51 Save: $11.98 Availability: In Stock
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DORMAN COOLANT RESERVOIR TANK, PLASTIC -- Includes low fluid sensor; A high quality, direct-fit OE replacement reservoir tank; With Lifetime Dorman limited warranty. (see more)

  • SKU#: RB603122
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Includes:   Level sensor
(see more)
Rating: (see review/s)

"The part was a perfect fit and easy to install.....all worked well" posted by: Al on October 14, 2014

"It was a perfect fit and easy to install. It arrived very quickly and we weree finally relieved to get the check coolant level to turn off. It works great! Thank you Auto Warehouse for meeting all of our automotive part needs." posted by: Hearts on September 19, 2013

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$51.08 List Price: $60.27 Save: $9.19 Availability: In Stock
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  • Free Ground Shipping
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603205
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Includes:   Level sensor
(see more)
Rating: (see review/s)

"Easy to order, arrived on time as expected. Easy to install. Carton arrived on time but torn and crushed in. No damage to item, but packaging should be used to keep this from happening. Great Job!!" posted by: Renner55 on December 3, 2014

"The item was easy as 1-2-3 to install. It was an exact replacement for my damaged reservoir. The cost was $50.00 less that anything that I could find locally. I guess I must have missed the possibility of express shipping but the last item I purchased from this company arrived in 2 days. I will look for that option next time when I need it faster." posted by: J.D. on December 9, 2013 view all 7 reviews

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$74.57 List Price: $87.99 Save: $13.42 Availability: In Stock
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  • Free Ground Shipping
  • Low Price Guarantee
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603207
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Does Not Include:   Level sensor
(see more)
Rating: (see review/s)

"would definitely recommend parts from apw.great price and great products.thanks apw." posted by: camry03 on February 15, 2015

"Fantastic price service delivery and follow up for a hard to find part for a classic auto 2003 Thunderbird.THANK YOU !!!" posted by: Jackwh on June 20, 2014 view all 4 reviews

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Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$52.54 List Price: $62.00 Save: $9.46 Availability: In Stock
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  • Free Ground Shipping
  • Low Price Guarantee
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603102
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Includes:   Level sensor
(see more)
Rating: (see review/s)

"I was looking for a replacement coolant reservoir for my 2001 Tahoe and this product was the perfect choice." posted by: Scooter on January 5, 2015

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$56.21 List Price: $66.33 Save: $10.12 Availability: In Stock
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  • Free Ground Shipping
  • Low Price Guarantee
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603319
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Notes:   Pressurized
(see more)
Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$43.78 List Price: $51.66 Save: $7.88 Availability: In Stock
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603027
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Replaces OE Number:   1J0121407F
(see more)
Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$42.91 List Price: $50.63 Save: $7.72 Availability: In Stock
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603217
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Replaces OE Number:   6C3Z8A080B, 3C3Z8A080AE
(see more)
Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$53.59 List Price: $63.24 Save: $9.65 Availability: In Stock
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  • Free Ground Shipping
  • Low Price Guarantee
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603307
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Replaces OE Number:   4758269AB, 4758269AC
(see more)
Rating: (see review/s)

"This is my second Dorman Coolant Reservoir for this car. The first replacement lasted 23 months before it developed cracks and leaks around some of the plastic seams. Since it was under warranty I returned it for a new one. When this one fails I will consider another mfr." posted by: 300carguy on August 17, 2014

"I searched the web looking for this part. The O.E. part developed a crack where the nipple met the reservoir. This replacement part fit exactly. If your reading this review you must be considering a replacement part. I highly recommend you use this part. It also comes with a new cap." posted by: Roadrunnerlen on June 28, 2014 view all 6 reviews

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$31.93 List Price: $37.68 Save: $5.75 Availability: In Stock
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DORMAN WINDSHIELD WATER RESERVOIR -- Does not include low fluid sensor; A high quality, direct fit OE replacement windshield reservoir; Replaces OE number 12363309. (see more)

  • SKU#: RB603105
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Replaces OE Number:   12363309
(see more)
Rating: (see review/s)

"Item shipped immediately. I received it promptly and installed it with no problem. Works fine." posted by: hawk on May 7, 2014

"I have never replaced a coolant reservoir before but that didn t stop me. Lift out the old hold down and loose the hose from radiator. Lift up both reservoir and detach the coolant reservoir from the electrical connection and washer fluid hoses from the windshield washer pump. Slide in the new one and make all the connection to the new reservoir and you are done." posted by: fepo on December 12, 2012 view all 3 reviews

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$54.93 List Price: $64.82 Save: $9.89 Availability: In Stock
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  • Free Ground Shipping
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603537
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Replaces OE Number:   17111741167, 17111742231
(see more)
Rating: (see review/s)

"I purchased this item for $57 from these guys and it was a further &41 to send it to New Zealand which is about as far from the states as you can get. The same product from the dealers here was $900. It arrived in 4 days correct part and even had a radaitor cap on it (I just bought one here for $75!)" posted by: cadillacrex on August 14, 2014

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$75.63 List Price: $89.24 Save: $13.61 Availability: In Stock
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  • Free Ground Shipping
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603236
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Replaces OE Number:   25635588
(see more)
Rating: (see review/s)

"Put in reservoir with no problem but I still get check coolant level message. Reset message and checked electrical connection. Still get low coolant message. Very annoying." posted by: caddy1 on July 9, 2014

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$51.18 List Price: $79.25 Save: $28.07 Availability: In Stock
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  • Free Ground Shipping
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DORMAN – OE REPLACEMENT COOLANT RESERVOIRS

Engine overheating due to a cracked or warped coolant reservoir? Keep your cool with an ultra-durable OE replacement coolant reservoir by Dorman. Since 1918, (see more)

  • SKU#: RB603500
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Does Not Include:   Level sensor
(see more)
Rating: (see review/s)

"I have replaced this tank from Mazda at least 4 times. With the Dorman lifetime warranty I hope this is the last one I have to buy. It is an exact replacement for the OEM product." posted by: on December 9, 2011

"Arrived in short time and fit perfectly as a direct replacement." posted by: on November 8, 2010 view all 6 reviews

Dorman Coolant Reservoir, Plastic, Factory Finish, Direct Fit
$41.82 List Price: $49.35 Save: $7.53 Availability: In Stock
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DORMAN COOLANT RESERVOIR TANK, PLASTIC -- A high quality, direct-fit OE replacement reservoir tank. (see more)

  • SKU#: RB603208
  • Brand: Dorman
  • Quantity Sold:   Sold Individually
  • Cap Included:   Yes
  • Recommended Use:   OE Replacement
  • Anticipated Ship Out Time:   Same day - 1 business day
  • Replaces OE Number:   2F2Z8A080AA
(see more)
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The Dorman expansion tank is an excellent choice when it comes to replacing the worn out one on your vehicle. An expansion tank is important if you want to save up on the coolant. As the engine heats up, the coolant expands, causing it to overflow and out it goes into the pavements. But that is not so with an expansion tank as the coolant will overflow into the expansion tank. Since a cooling system equipped with an expansion tank is practically a closed system, the coolant can flow between the system and the expansion tank as it expands and contracts. In this way, there will be no coolant lost if the system is functioning correctly. Another function of the expansion tank is to get rid of the air bubbles from the cooling system. A coolant without air-bubbles will be much more efficient than coolant with air bubbles, as it absorbs heat a lot faster. The advantage of the expansion tank is that while the level of coolant contained in it increases and decreases, the radiator will always be full. The earlier cars can easily be integrated with expansion tanks, simply by mounting the tank near the radiator, connecting it to the overflow tube, and replacing the radiator cap. If your expansion tank is already inefficient, replace it with a new one. That way, it will be more practical on your side plus the chances of you damaging the environment will be decreased. The Dorman expansion tanks are guaranteed to be functioning efficiently and they are guaranteed to have a long service life.