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
Perfect fit expansion cap. has all the "current model" markings painted on it, so dresses up engine bay nicely. (Posted on 18/02/2019)
Review by Peter
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Perfect fit
Review by Jason
Arrived extremely quickly and well packaged. No fitment issues at all (Posted on 6/02/2019)
Review by Jason
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
As usual, excellent
Review by Scott
Cheapest BMW parts in Oz and, as usual, lightning fast delivery with excellent packaging. (Posted on 21/01/2019)
Review by Scott
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Fantastic experience
Review by Gerard
Ordered parts Friday delivered early Monday installed and back on the road! Tkx Clickable (Posted on 16/11/2018)
Review by Gerard
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Service
Review by Mark
Great service, very easy to use website. Thanks. (Posted on 31/10/2018)
Review by Mark
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Great replacement
Review by Lachlan
Looks even better than the OEM cap! Functions to the same standard as well. (Posted on 30/10/2018)
Review by Lachlan
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Great Service as Usual
Review by Brad
Every time I order from these guys it is professional, fast with the exact products I need. (Posted on 31/08/2018)
Review by Brad
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Excelent
Review by Joseph
Prompt Service, quick delivery (Posted on 22/07/2018)
Review by Joseph
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
another good transaction with Clickable.
Review by stewart
This company is consistently good and stands out from many competitors due to part quality and exceptional customer service. (Posted on 12/06/2018)
Review by stewart
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Great replacement
Review by chris
Great quality replacement, price is much better compared with genuine or sourcing ex usa, highly recommend (Posted on 7/06/2018)
Review by chris
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Excellent shipping
Review by Sam
Far as I can tell, good quality. Ordered Friday afternoon and received Monday morning as well. (Posted on 16/05/2018)
Review by Sam
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
excellent product and delivers
Review by Geoff
Great to deal with. Perfect fit parts and delivered promptly (Posted on 9/04/2018)
Review by Geoff
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Excellent product and service
Review by Geoff
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)
Review by Geoff
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Excellent
Review by Sam
Perfect (Posted on 29/03/2018)
Review by Sam
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
great to deal with
Review by leo
Would recommend as good as any bmw products I has purchased. (Posted on 25/03/2018)
Review by leo
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Quality cap
Review by Angelo
Quality cap at best price. (Posted on 10/03/2018)
Review by Angelo
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Quality Product
Review by Angelo
The quality of this cap was the same as genuine. (Posted on 8/03/2018)
Review by Angelo
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Amazing service
Review by Yianos
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)
Review by Yianos
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
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
Works great. (Posted on 16/02/2018)
Review by Richard
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Fast delivery
Review by Taki
quality product , fast delivery (Posted on 15/12/2017)
Review by Taki
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
High Quality
Review by nrjtach
As usual speed and quality -thanks Guys (Posted on 12/12/2017)
Review by nrjtach
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Fast
Review by Don
A very convenient service and very fast delivery. (Posted on 4/10/2017)
Review by Don
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Quality Cap
Review by Ross
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)
Review by Ross
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
E39 Expansion Tank Cap
Review by Guyzy
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)
Review by Guyzy
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
A bargain
Review by David
Super cheap. Excellent quality and fit. Super fast delivery. What could you possibly complain about? (Posted on 28/08/2017)
Review by David
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Na
Review by Peter
Great price, great service. (Posted on 7/08/2017)
Review by Peter
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Good price
Review by Darren
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)
Review by Darren
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
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
quality product, fast shipping, good price (Posted on 16/06/2017)
Review by malakia
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Name-brand parts at great price
Review by Andrew
Can't find such OEM parts for anywhere near the price elsewhere. Well-priced, easy and reliable. (Posted on 30/05/2017)
Review by Andrew
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Excellent as always
Review by Werner
Excellent as always (Posted on 26/05/2017)
Review by Werner
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Excellent.
Review by Geoffrey
Excellent. (Posted on 2/05/2017)
Review by Geoffrey
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Great
Review by stevie
As always, fast delivery and a part that fits perfectly at a reasonable price.
Cheers, Stevie (Posted on 27/04/2017)
Review by stevie
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Cheers, Stevie (Posted on 27/04/2017)
Fast delivery
Review by Victor
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)
Review by Victor
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
excellent valve and fast delivery
Review by wesley
Professional Service and good quality products
(Posted on 19/03/2017)
Review by wesley
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
(Posted on 19/03/2017)
service
Review by leo
great and fast service (Posted on 7/03/2017)
Review by leo
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Great price
Review by Julius
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)
Review by Julius
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Good solid item
Review by JooMeng
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)
Review by JooMeng
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
This new cap feels solid and should be good for another 17 years. (Posted on 16/01/2017)
Very happy
Review by David
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)
Review by David
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
A good experience
Review by Brian
Good Quality, Right Price, Delivery a little slow. (Posted on 22/11/2016)
Review by Brian
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
outstanding
Review by Carl
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)
Review by Carl
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
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
good product (Posted on 11/10/2016)
Review by david
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Very good!
Review by Shawn
High quality (Posted on 10/10/2016)
Review by Shawn
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Great delivery time
Review by Stephen
Item delivered extremely quickly and quality is very good (Posted on 29/09/2016)
Review by Stephen
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Excellent
Review by Philip
Good value (Posted on 23/09/2016)
Review by Philip
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Very good
Review by david
great product (Posted on 19/09/2016)
Review by david
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
good peace of mind
Review by John
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)
Review by John
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Excellent
Review by Richard
Right quality right price - easy. (Posted on 20/07/2016)
Review by Richard
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Very Happy
Review by Richard
Perfect, couldn't be happier. (Posted on 30/06/2016)
Review by Richard
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Quick, efficient service with reliable delivery at a fair price
Review by Pino
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)
Review by Pino
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
(Posted on 14/06/2016)
great product
Review by Mark
fits perfectly like a glove (Posted on 7/06/2016)
Review by Mark
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
great
Review by michael
fits just right (Posted on 1/06/2016)
Review by michael
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Perfect
Review by Graham
Only a small but critical item. Simple transaction and prompt delivery. (Posted on 3/05/2016)
Review by Graham
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Car parts
Review by Kieran
Quick postage good price. (Posted on 24/03/2016)
Review by Kieran
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Quality Part and Quick
Review by Brad
No problems (Posted on 24/02/2016)
Review by Brad
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Expansion cap E36
Review by L.S
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)
Review by L.S
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Great Product
Review by Jimmy
Fast response and delivery. Great quality product. (Posted on 18/12/2015)
Review by Jimmy
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Expansion
Review by Brent
Just as advertised. Fits well and no problems. (Posted on 15/11/2015)
Review by Brent
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Fantastic
Review by Reece
Quality part that does what the title says (Posted on 20/10/2015)
Review by Reece
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
great thanks
Review by john
great thanks (Posted on 19/10/2015)
Review by john
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Just like the original
Review by Ross
Cap was the same as the original. (Posted on 4/10/2015)
Review by Ross
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Can't go past this
Review by Anton
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)
Review by Anton
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Thank again guys. (Posted on 26/08/2015)
Easy
Review by James
Top notch, thanks Clickable! (Posted on 21/08/2015)
Review by James
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Excellent
Review by Matt
Excellent as always. (Posted on 22/07/2015)
Review by Matt
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Top quality parts
Review by Branko
Fast delivery and good service. (Posted on 19/07/2015)
Review by Branko
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Expansion Cap
Review by Laurie
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)
Review by Laurie
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Keep up the good work lads. (Posted on 9/07/2015)
Great.
Review by glyn
Fantastic Quality and Price. I am Very Happy and will be return when needed too, Great site.. thanks. (Posted on 16/06/2015)
Review by glyn
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Coolant Expansion Tank Cap
Review by John
Great price.Fast delivery.High quality. Good Job. (Posted on 14/06/2015)
Review by John
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Fantastic
Review by glyn
So Happy that I found your company, the products are great and a fair price, so very happy.. (Posted on 8/06/2015)
Review by glyn
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Highly Reccomended
Review by Laurie
As always, an honest product at a reasonable price. The first stop when buying BMW spares. (Posted on 4/06/2015)
Review by Laurie
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Expansion Cap
Review by Brent
No problems with ordering on-line. Fast delivery and item exactly as described. Job done (Posted on 20/05/2015)
Review by Brent
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Perfect!
Review by Thanh
Love Price, Love Fitment, Love delivery time, Will be back for more (Posted on 27/04/2015)
Review by Thanh
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Quality Product
Review by Grahame
Great service and good price (Posted on 15/04/2015)
Review by Grahame
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Works Great
Review by Warren
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)
Review by Warren
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
nice one
Review by JIAN
working well (Posted on 23/03/2015)
Review by JIAN
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Outstanding as always
Review by Jeff
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)
Review by Jeff
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Reliability Plus
Review by Laurie
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)
Review by Laurie
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
Excellent
Review by Jeff
The usual service and quality I have come to expect from the team. Superb! (Posted on 11/02/2015)
Review by Jeff
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Great Service Again
Review by Ron
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)
Review by Ron
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Quick delivery, OEM part
Review by Christopher
Genuine OEM part and arrived the next day, unbelievably fast shipping and amazing quality. (Posted on 16/10/2014)
Review by Christopher
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
great
Review by mark
great product, quick delivery (Posted on 6/10/2014)
Review by mark
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
as good as original
Review by Edmond
I found no different with the original (Posted on 9/06/2014)
Review by Edmond
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Very good
Review by Daniel
Very happy with product, appears to be like for like (Posted on 18/04/2014)
Review by Daniel
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Good fit and arrived next day
Review by Mark
The parts were a good and easy fit. delivered the next day! (Posted on 3/02/2014)
Review by Mark
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Awesome!
Review by Adam
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)
Review by Adam
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Amazing service
Review by Tim
Once again top work clickable!
Fantastic price and next day delivery! (Posted on 16/01/2014)
Review by Tim
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Fantastic price and next day delivery! (Posted on 16/01/2014)
Perfect service and product
Review by Ben
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)
Review by Ben
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
Same as the OEM one
Review by Marty
Exactly the same as OEM - i can't tell the difference... (Posted on 3/09/2013)
Review by Marty
| Price | |
|---|---|
| Delivery | |
| Quality | |
| Experience |
radiator cap
Review by stuart
good quality fitted properly
(Posted on 19/08/2013)
Review by stuart
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
(Posted on 19/08/2013)
Speedy delivery product as describe
Review by mariane
New cap replaced and works great, genuine dealer. (Posted on 16/08/2013)
Review by mariane
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Excellent
Review by Josh
Fast delivery, great price and quality.
Clickable is the way to go. (Posted on 23/07/2013)
Review by Josh
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Clickable is the way to go. (Posted on 23/07/2013)
Couldn't be happier.
Review by Josh
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)
Review by Josh
| Delivery | |
|---|---|
| Quality | |
| Experience | |
| Price |
Fast Delivery
Review by Dameon
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)
Review by Dameon
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Item as describe and speedy delivery
Review by Ann
Unexpected speedy delivery and quality parts, will buy in future and recommended seller, thanks. (Posted on 24/06/2013)
Review by Ann
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
very fast delivery
Review by allan
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)
Review by allan
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Allan (Posted on 29/04/2013)
Very good quick service and perfect item
Review by Anthony
The items arrived in good order and very quickly and well packed (Posted on 26/04/2013)
Review by Anthony
| Experience | |
|---|---|
| Price | |
| Delivery | |
| Quality |
Very satisfied....
Review by Geoff
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)
Review by Geoff
| Quality | |
|---|---|
| Experience | |
| Price | |
| Delivery |
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)
Get Social