Expansion Tank Cap

In Stock

 
OEM Part Number: 17111742231
Alternative Part Number: 17117639022
Alternative Part Number: 17111712669
Alternative Part Number: 17111712492
Behr Hella Part Number: 8MY 376 743-451
$15
  |  Priced Individually (GST included)

This Fits

Please carefully review the table below to ensure this part correctly corresponds with your car’s model, build dates, and body style.

Model Body Build
     
316i All 12.90 to 09.98
318i All 01.90 to 06.98
318is All 02.91 to 05.99
320i All 01.90 to 05.98
323i All 07.94 to 05.98
325i All 01.90 to 07.95
328i All 03.95 to 08.99
M3 All 03.92 to 08.99
318ti Compact 03.94 to 08.00
Model Body Build
     
318i Sedan 07.98 to 02.05
320i Sedan 07.98 to 02.05
323i Sedan 03.98 to 08.00
325i Sedan 09.00 to 02.05
328i Sedan 03.98 to 08.00
330i Sedan 09.00 to 02.05
320i Touring 07.98 to 02.05
316ti Compact 03.00 to 12.04
318ti Compact 03.01 to 12.04
325ti Compact 03.00 to 12.04
320Ci Coupe 04.99 to 05.06
323Ci Coupe 04.99 to 08.00
325Ci Coupe 01.00 to 05.06
328Ci Coupe 04.99 to 08.00
330Ci Coupe 01.00 to 05.06
M3 Coupe 10.00 to 05.06
325Ci Convertible 02.00 to 08.06
330Ci Convertible 02.00 to 08.06
M3 Convertible 10.00 to 05.06
Model Body Build
     
523i Sedan 11.95 to 09.00
525i Sedan 09.00 to 06.03
528i Sedan 11.95 to 09.00
530i Sedan 09.00 to 06.03
535i Sedan 04.96 to 06.03
540i Sedan 04.96 to 06.03
M5 Sedan 10.98 to 06.03
528i Touring 01.97 to 09.00
530i Touring 09.00 to 05.04
Model Body Build
     
735i Sedan 01.96 to 11.01
735iL Sedan 01.96 to 11.01
740i Sedan 10.94 to 11.01
740iL Sedan 10.94 to 11.01
750i Sedan 10.94 to 11.01
750iL Sedan 10.94 to 11.01
Model Body Build
     
735i Sedan 11.01 to 02.05
735Li Sedan 11.01 to 02.05
740i Sedan 06.04 to 07.08
740Li Sedan 09.04 to 07.08
745i Sedan 11.01 to 02.05
745Li Sedan 11.01 to 02.05
750i Sedan 06.04 to 07.08
750Li Sedan 06.04 to 07.08
760i Sedan 02.02 to 07.08
760Li Sedan 02.02 to 07.08
Model Body Build
     
2.5i SUV 01.04 to 07.06
2.5si SUV 09.06 to 08.10
3.0i SUV 01.04 to 07.06
3.0si SUV 09.06 to 08.10
Model Body Build
     
3.0i SUV 05.00 to 09.06
4.4i SUV 05.00 to 09.06
4.6is SUV 02.02 to 04.04
4.8is SUV 04.04 to 09.06
Model Body Build
     
1.9i All 01.95 to 03.99
2.0i All 04.99 to 01.03
2.2i All 08.00 to 01.03
2.8i All 04.97 to 06.00
3.0i All 06.00 to 01.03
M All 03.97 to 01.03
Model Body Build
     
2.5i All 02.03 to 12.05
2.5si All 01.06 to 08.08
3.0i All 02.03 to 12.05
3.0si All 01.06 to 08.08
M All 03.06 to 08.08

Description

The coolant expansion tank cap maintains the necessary pressure in your cooling system, ensuring everything runs effectively. But over time the seal can weaken or deform, gradually leaking coolant and leading to overheating issues. Thousands of heat cycles can also cause the caps to form to the unique shape of the old tank, and we often see customers replace their expansion tank only to experience issues with their old cap not sealing properly. With this in mind, we always recommend ordering a replacement cap when replacing your expansion tank. These are repackaged BMW Genuine expansion tanks that have the logo etched off, and come directly from the OEM supplier, Behr Hella. 

Helpful Tips

The expansion tank cap also acts as a safety valve, designed to release pressure before your hoses, fittings, and radiator bursts.

More Details

Manufacturer BEHR
Made in Austria
Required per car 1

Latest Reviews

great expansion cap
Review by Peter
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Perfect fit expansion cap. has all the "current model" markings painted on it, so dresses up engine bay nicely. (Posted on 18/02/2019)
Perfect fit
Review by Jason
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Arrived extremely quickly and well packaged. No fitment issues at all (Posted on 6/02/2019)
As usual, excellent
Review by Scott
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Cheapest BMW parts in Oz and, as usual, lightning fast delivery with excellent packaging. (Posted on 21/01/2019)
Fantastic experience
Review by Gerard
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Ordered parts Friday delivered early Monday installed and back on the road! Tkx Clickable (Posted on 16/11/2018)
Service
Review by Mark
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Great service, very easy to use website. Thanks. (Posted on 31/10/2018)
Great replacement
Review by Lachlan
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Looks even better than the OEM cap! Functions to the same standard as well. (Posted on 30/10/2018)
Great Service as Usual
Review by Brad
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Every time I order from these guys it is professional, fast with the exact products I need. (Posted on 31/08/2018)
Excelent
Review by Joseph
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Prompt Service, quick delivery (Posted on 22/07/2018)
another good transaction with Clickable.
Review by stewart
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This company is consistently good and stands out from many competitors due to part quality and exceptional customer service. (Posted on 12/06/2018)
Great replacement
Review by chris
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Great quality replacement, price is much better compared with genuine or sourcing ex usa, highly recommend (Posted on 7/06/2018)
Excellent shipping
Review by Sam
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Far as I can tell, good quality. Ordered Friday afternoon and received Monday morning as well. (Posted on 16/05/2018)
excellent product and delivers
Review by Geoff
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Delivery
Great to deal with. Perfect fit parts and delivered promptly (Posted on 9/04/2018)
Excellent product and service
Review by Geoff
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Delivery
Clickable is excellent quality parts. I have not had a bad experience yet and the product descriptions are spot on (Posted on 5/04/2018)
Excellent
Review by Sam
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Delivery
Perfect (Posted on 29/03/2018)
great to deal with
Review by leo
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Delivery
Would recommend as good as any bmw products I has purchased. (Posted on 25/03/2018)
Quality cap
Review by Angelo
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Delivery
Quality cap at best price. (Posted on 10/03/2018)
Quality Product
Review by Angelo
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Delivery
The quality of this cap was the same as genuine. (Posted on 8/03/2018)
Amazing service
Review by Yianos
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Delivery
Been buying my parts for years from clickable.. give them a try
Never late never wondering when my parts are going to turn up
Communication is the key.. Awesome work.. (Posted on 8/03/2018)
Perfect
Review by Richard
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Delivery
Works great. (Posted on 16/02/2018)
Fast delivery
Review by Taki
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Quality
quality product , fast delivery (Posted on 15/12/2017)
High Quality
Review by nrjtach
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As usual speed and quality -thanks Guys (Posted on 12/12/2017)
Fast
Review by Don
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Price
A very convenient service and very fast delivery. (Posted on 4/10/2017)
Quality Cap
Review by Ross
Price
Delivery
Quality
Experience
This cap is great quality. Along with other radiator parts they arrive the next day and fixed my water loss issues. Thanks Luke for your valuable experience. (Posted on 17/09/2017)
E39 Expansion Tank Cap
Review by Guyzy
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Delivery
Quality
Experience
The Expansion Tank Cap fits perfectly, looks and feel like a genuine BMW part which it is. Delivered with in 2 days, im very happy. (Posted on 10/09/2017)
A bargain
Review by David
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Super cheap. Excellent quality and fit. Super fast delivery. What could you possibly complain about? (Posted on 28/08/2017)
Na
Review by Peter
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Great price, great service. (Posted on 7/08/2017)
Good price
Review by Darren
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Quality
I was doing the cooling system with parts i ordered here
All parts arived the day after i ordered them and everything went on without any trouble. Nice.

(Posted on 15/07/2017)
good price
Review by malakia
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Delivery
quality product, fast shipping, good price (Posted on 16/06/2017)
Name-brand parts at great price
Review by Andrew
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Quality
Can't find such OEM parts for anywhere near the price elsewhere. Well-priced, easy and reliable. (Posted on 30/05/2017)
Excellent as always
Review by Werner
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Excellent as always (Posted on 26/05/2017)
Excellent.
Review by Geoffrey
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Quality
Excellent. (Posted on 2/05/2017)
Great
Review by stevie
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Quality
As always, fast delivery and a part that fits perfectly at a reasonable price.
Cheers, Stevie (Posted on 27/04/2017)
Fast delivery
Review by Victor
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Price
Noticed my had a small crack within the threads so decided to buy a replacement just for good measure. Fits great and quality is top notch. Also speedy shipping - keep it up Clickable! (Posted on 23/03/2017)
excellent valve and fast delivery
Review by wesley
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Delivery
Professional Service and good quality products
(Posted on 19/03/2017)
service
Review by leo
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Price
great and fast service (Posted on 7/03/2017)
Great price
Review by Julius
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Price
Not much to say about a coolant cap really but very good quality part and very cheap! No problems at all (Posted on 8/02/2017)
Good solid item
Review by JooMeng
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Price
Mine was falling apart...bits dropped into the expansion tank before I could catch hold of the broken bit.

This new cap feels solid and should be good for another 17 years. (Posted on 16/01/2017)
Very happy
Review by David
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Quality
I bought a cheap cap from somewhere else and it failed after a very short time. This cap fits and works much better. Great price too. Excellent stuff! (Posted on 23/12/2016)
A good experience
Review by Brian
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Price
Good Quality, Right Price, Delivery a little slow. (Posted on 22/11/2016)
outstanding
Review by Carl
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Delivery
Quality
ordered one day, received the next.
Cap is a perfect fit. identical to the $80 item that you would get from a dealership. (Posted on 4/11/2016)
great
Review by david
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Quality
good product (Posted on 11/10/2016)
Very good!
Review by Shawn
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Experience
High quality (Posted on 10/10/2016)
Great delivery time
Review by Stephen
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Quality
Experience
Item delivered extremely quickly and quality is very good (Posted on 29/09/2016)
Excellent
Review by Philip
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Good value (Posted on 23/09/2016)
Very good
Review by david
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Quality
Experience
great product (Posted on 19/09/2016)
good peace of mind
Review by John
Price
Delivery
Quality
Experience
My old cap seemed to be having some issues. For the price it is not worth worth trying to figure out if the cap was at fault and just replaced. (Posted on 11/09/2016)
Excellent
Review by Richard
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Delivery
Right quality right price - easy. (Posted on 20/07/2016)
Very Happy
Review by Richard
Price
Delivery
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Experience
Perfect, couldn't be happier. (Posted on 30/06/2016)
Quick, efficient service with reliable delivery at a fair price
Review by Pino
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Delivery
Quality
Experience
Whilst I have ordered a number of parts for both my E46 and E90 over several different occasions, I have always found both the online service and phone technical assistance to have been efficient, with quick and reliable service
(Posted on 14/06/2016)
great product
Review by Mark
Price
Delivery
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Experience
fits perfectly like a glove (Posted on 7/06/2016)
great
Review by michael
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Delivery
Quality
fits just right (Posted on 1/06/2016)
Perfect
Review by Graham
Price
Delivery
Quality
Experience
Only a small but critical item. Simple transaction and prompt delivery. (Posted on 3/05/2016)
Car parts
Review by Kieran
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Delivery
Quality
Experience
Quick postage good price. (Posted on 24/03/2016)
Quality Part and Quick
Review by Brad
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Delivery
Quality
No problems (Posted on 24/02/2016)
Expansion cap E36
Review by L.S
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Delivery
Excellent and professional service. Very quick dispatch and delivery. Very good and neat packaging. Too soon to say but quality looks good to me. (Posted on 13/01/2016)
Great Product
Review by Jimmy
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Delivery
Fast response and delivery. Great quality product. (Posted on 18/12/2015)
Expansion
Review by Brent
Price
Delivery
Quality
Experience
Just as advertised. Fits well and no problems. (Posted on 15/11/2015)
Fantastic
Review by Reece
Delivery
Quality
Experience
Price
Quality part that does what the title says (Posted on 20/10/2015)
great thanks
Review by john
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Price
Delivery
great thanks (Posted on 19/10/2015)
Just like the original
Review by Ross
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Delivery
Cap was the same as the original. (Posted on 4/10/2015)
Can't go past this
Review by Anton
Delivery
Quality
Experience
Price
As summer is on its way, I couldn't go past this. Bought one for each of my beemers. Cant go wrong.

Thank again guys. (Posted on 26/08/2015)
Easy
Review by James
Delivery
Quality
Experience
Price
Top notch, thanks Clickable! (Posted on 21/08/2015)
Excellent
Review by Matt
Experience
Price
Delivery
Quality
Excellent as always. (Posted on 22/07/2015)
Top quality parts
Review by Branko
Quality
Experience
Price
Delivery
Fast delivery and good service. (Posted on 19/07/2015)
Expansion Cap
Review by Laurie
Experience
Price
Delivery
Quality
As always, Clickable Automotive make owning a BMW so easy on the hip pocket when buying good quality spares.
Keep up the good work lads. (Posted on 9/07/2015)
Great.
Review by glyn
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Price
Delivery
Fantastic Quality and Price. I am Very Happy and will be return when needed too, Great site.. thanks. (Posted on 16/06/2015)
Coolant Expansion Tank Cap
Review by John
Delivery
Quality
Experience
Price
Great price.Fast delivery.High quality. Good Job. (Posted on 14/06/2015)
Fantastic
Review by glyn
Experience
Price
Delivery
Quality
So Happy that I found your company, the products are great and a fair price, so very happy.. (Posted on 8/06/2015)
Highly Reccomended
Review by Laurie
Experience
Price
Delivery
Quality
As always, an honest product at a reasonable price. The first stop when buying BMW spares. (Posted on 4/06/2015)
Expansion Cap
Review by Brent
Price
Delivery
Quality
Experience
No problems with ordering on-line. Fast delivery and item exactly as described. Job done (Posted on 20/05/2015)
Perfect!
Review by Thanh
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Price
Delivery
Love Price, Love Fitment, Love delivery time, Will be back for more (Posted on 27/04/2015)
Quality Product
Review by Grahame
Delivery
Quality
Experience
Price
Great service and good price (Posted on 15/04/2015)
Works Great
Review by Warren
Quality
Experience
Price
Delivery
I found clickable automotive great to work with. They were helpful and the parts are good quality. The shipping was fast and at a good price. I would use this part again. (Posted on 30/03/2015)
nice one
Review by JIAN
Quality
Experience
Price
Delivery
working well (Posted on 23/03/2015)
Outstanding as always
Review by Jeff
Experience
Price
Delivery
Quality
I have bought many parts from Clickable. This Radiator cap is exactly like the other parts, excellent quality and price with lightening fast delivery. (Posted on 16/02/2015)
Reliability Plus
Review by Laurie
Quality
Experience
Price
Delivery
Always happy to do business with Clickable!They are always happy to help with queries and are prompt with their deliveries. Most of all very reasonable pricing. Keep up the good work guys. (Posted on 12/02/2015)
Excellent
Review by Jeff
Price
Delivery
Quality
Experience
The usual service and quality I have come to expect from the team. Superb! (Posted on 11/02/2015)
Great Service Again
Review by Ron
Price
Delivery
Quality
Experience
Purchased Coolant tank, cap, and thermostat. Shipped same day and received next day. OEM quality and installed with no problems. Thanks again. (Posted on 24/11/2014)
Quick delivery, OEM part
Review by Christopher
Experience
Price
Delivery
Quality
Genuine OEM part and arrived the next day, unbelievably fast shipping and amazing quality. (Posted on 16/10/2014)
great
Review by mark
Price
Delivery
Quality
Experience
great product, quick delivery (Posted on 6/10/2014)
as good as original
Review by Edmond
Experience
Price
Delivery
Quality
I found no different with the original (Posted on 9/06/2014)
Very good
Review by Daniel
Price
Delivery
Quality
Experience
Very happy with product, appears to be like for like (Posted on 18/04/2014)
Good fit and arrived next day
Review by Mark
Delivery
Quality
Experience
Price
The parts were a good and easy fit. delivered the next day! (Posted on 3/02/2014)
Awesome!
Review by Adam
Delivery
Quality
Experience
Price
Parts arrived in two days. Quality ones too! I also had a query and it answered within the day even though well after business hours. Good work! (Posted on 19/01/2014)
Amazing service
Review by Tim
Delivery
Quality
Experience
Price
Once again top work clickable!
Fantastic price and next day delivery! (Posted on 16/01/2014)
Perfect service and product
Review by Ben
Price
Delivery
Quality
Experience
Original BMW part, delivered the day after I ordered it. What more does one want? Oh, the price was 75% less than that quoted by Rolfe BMW in Canberra. (Posted on 6/01/2014)
Same as the OEM one
Review by Marty
Price
Delivery
Quality
Experience
Exactly the same as OEM - i can't tell the difference... (Posted on 3/09/2013)
radiator cap
Review by stuart
Experience
Price
Delivery
Quality
good quality fitted properly
(Posted on 19/08/2013)
Speedy delivery product as describe
Review by mariane
Experience
Price
Delivery
Quality
New cap replaced and works great, genuine dealer. (Posted on 16/08/2013)
Excellent
Review by Josh
Delivery
Quality
Experience
Price
Fast delivery, great price and quality.
Clickable is the way to go. (Posted on 23/07/2013)
Couldn't be happier.
Review by Josh
Delivery
Quality
Experience
Price
These guys are great. Product arrived much quicker than expected, very well packed and qreat quality. Great price. All round great service. (Posted on 23/07/2013)
Fast Delivery
Review by Dameon
Experience
Price
Delivery
Quality
I needed these in a hurry, I knew that ordering with Clickable would get them too me within a few days. Awesome... (Posted on 3/07/2013)
Item as describe and speedy delivery
Review by Ann
Experience
Price
Delivery
Quality
Unexpected speedy delivery and quality parts, will buy in future and recommended seller, thanks. (Posted on 24/06/2013)
very fast delivery
Review by allan
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Price
Delivery
Quality
needed expansion cap quickly,so delivery was fast,fitted new part and was on my way,excellent service.THANKYOU,
Allan (Posted on 29/04/2013)
Very good quick service and perfect item
Review by Anthony
Experience
Price
Delivery
Quality
The items arrived in good order and very quickly and well packed (Posted on 26/04/2013)
Very satisfied....
Review by Geoff
Quality
Experience
Price
Delivery
genuine BMW parts at these prices.... awsome...
cheaper than BMW dealer and delivered to my door,(Closest dealer is 2 hour plus drive away)
New cap replaced original and as expected works great and can't fault it... (Posted on 16/03/2013)