More BMW Coolant Expansion Tank - Mahle Behr 17117573751
BMW Coolant Expansion Tank - Mahle Behr 17117573751 BMW Coolant Expansion Tank - Mahle Behr 17117573751 BMW Coolant Expansion Tank - Mahle Behr 17117573751
Mahle Behr
SKU: MAH-CRT2000S

BMW Coolant Expansion Tank - Mahle Behr 17117573751

Z4

Does not include the expansion tank cap

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3 Ratings
Available
In Stock
Price each: $67.99
Core charges are assigned to parts that have reusable components by manufacturers to encourage the return of the used units. Once you return the old part you will be refunded for your core charge, details regarding the return will be emailed to you once you place the order. Note: The customer is responsible for the cost of return shipping.
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Description

Details

SKU:
MAH-CRT2000S
FCP Euro ID:
639680
GTIN / UPC:
4057635114783
Made in:
China
Quality:
OEM

OE Numbers

17117573751, 17137514401

MFG Numbers

CRT2000S

Product Information

A common source of cooling system leaks and failures.

Your BMW's expansion tank gives coolant space to expand and contract as it goes through temperature changes. This tank is subjected to tremendous pressure and extreme heating and cooling cycles. This of course can cause cracks which result in coolant leaks. If your expansion tank is showing signs of leaks it must be replaced immediately.

Engine Coolant Reservoir

The engine coolant reservoir, also known as an ‘overflow bottle’ is a crucial component of modern vehicle cooling systems. Its job is to capture the increased volume of engine coolant that is created as the coolant is heated and expands. It needs someplace to go, so a coolant line that typically runs from the radiator outlet to the top of the engine coolant reservoir will feed the reservoir, while the reservoir feeds the engine as it needs more coolant to send through the engine and back through the radiator.

Engine coolant reservoirs are typically made of plastic and can be either clear or opaque. Some performance or aftermarket overflow bottles are made of aluminum or other more durable materials.

Engine Coolant Reservoir Failure Symptoms
  • Fogging: Over time, due to chemical exposure, age, and heat cycles, the clear plastic used in most engine coolant reservoirs can become foggy and opaque. This can make it difficult to read the coolant level accurately.
  • Leaks/ Cracking: The most common area for an engine coolant reservoir to leak is usually at a plastic seam or seal. As the bottle is run through thousands of heat cycles, from ambient temperatures below freezing to 200 degrees Fahrenheit plus, the weakest part of the reservoir, usually a seam or molded junction, can crack and fail.
  • Age: Over time, due to age and exposure, the plastic and materials will become brittle and prone to cracking and other age-related failures.
  • Coolant leaks: The most common failure of a bad engine coolant reservoir is a coolant leak. This can be slow or minimal, or it can be a total instant failure of the reservoir. If you notice a slow coolant leak and can diagnose it back to the overflow bottle, or coolant reservoir, it is recommended to replace it asap.
  • Overheating: A bad engine coolant reservoir can reduce engine cooling system pressure, reducing the effective boiling point of the engine coolant. Depending on temperatures and conditions, this can result in engine overheating.

About Mahle Behr

Mahle Behr GmbH & Co. KG is a German corporation active in the automobile industry, headquartered in Stuttgart-Feuerbach. It is a specialist for automotive air conditioning and engine cooling systems. Mahle began in 1920 when pistons made of heavy gray cast iron were being used in internal combustion engines for automobiles and there was a need for a new design. The Mahle brothers countered this trend by producing light-alloy pistons at their small, newly established company however the technology was still finicky and problems come up frequently. They soon determined that they needed to come up with a solution to keep dirt and dust out of the engine so they eventually developed air and oil filters as well. Their perseverance paid off and the light-alloy pistons began to take over the market. Today, half of all automobiles produced worldwide contain MAHLE components. MAHLE offers an extensive range of parts for everyone including pistons, cylinder liners, piston ring sets, bearings, assemblies, valves, valve train components, and air, oil, fuel, and cabin air filters. Their catalog and online database of aftermarket engine components is an indispensable reference.In early 2016, Stuttgart-based MAHLE GmbH increased its holding in the Behr Group from 36.85 percent to approximately 51 percent with the acquisition of all shares in the BWK GmbH holding company. The company now goes by Mahle-Behr.

Fits These Cars

BMW Z4

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    Automatic RWD Convertible 3.0L L6 N52 Gas
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    Manual RWD Convertible 3.0L L6 N52 Gas
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  • 2008 BMW Z4 Roadster 3.0si Engine Coolant Reservoir
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Product Reviews

3 Reviews

4.0
Average rating
Leave a review
Bisham Singh
on Sat, Jun 06 at 06:59PM
Extra tab
I had to trim the extra tab off, otherwise it was a good fitment. It was very challenging to remove the base from the old expansion tank. I was able to do by wrapping a cord around it and pulling while I held the expansion down with my feet.
Jai
on Tue, Apr 23 at 09:41PM
Great Buy
Great Product and fast shipping!
Bruce Hopkinson
on Tue, Dec 06 at 01:30PM
Expansion Tank Did Not Match
Although I verified part numbers and fitment with my 2007 Z4 3.0 si, the tank had a tab with the level symbols that was not present on the one on the car. Everything else matched so I ended up cutting off the tab. FC Europa needs to do a better job of verifying fitment.

Questions & Answers

Ask a question
Question Posted by a customer
Including a listing of the o-rings that expansion tank replacement touches would be a fantastic addition to this listing.
Answer (Posted by FCP Euro Products Team)
We try to include links to relevant parts when available/applicable, and appreciate the tip and desire to help us present the best listings possible. Unfortunately, if you are referencing the o-rings in the hoses and on the level sensor for this reservoir, BMW does not list replacement parts for these o-rings.
Question Posted by WALTER
where is the clip that locks to the bottom part to that extension tank?
Answer (Posted by FCP Euro Products Team)
This would be a part of the retainer, this fits multiple applications so would be something like the below you would be looking for. https://www.fcpeuro.com/Parts/?keywords=expansion%20tank%20retainer
Question Posted by WALTER
does this part come with cap and sensor in the bottom?
Answer (Posted by FCP Euro Products Team)
No, neither would be included and have to be purchased separately.
Question Posted by Edsel
is this expansion tank for cars with automatic transmission?
Answer (Posted by FCP Euro Products Team)
It will work with Manual and Automatic cars.

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