New expansion tank?

[pauly1299]

SEAT Parts have new expansion tanks without the silica bag, for less than £20. Is it worth fitting one on a 2019 CUPRA R with only 25k miles? The car has got SEAT warranty on it, might deleting the silica bag be an issue if there was a claim.

 

[RUM4MO]

If it was me, I'd plan on replacing the coolant that is in it now with G12evo - after replacing that reservoir, your warranty company couldn't hold that against you as both parts are joint replacement for what is in there now.

Edit:- maybe share the part number of the replacement reservoir for the benefit of others who are considering doing this.

 

[pauly1299]

Just look on seatdirectparts, it's listed on there. I have the SEAT service plan on my car, so it's the SEAT warranty. I'll ask the dealer about the new expansion tank and G12evo coolant, nearer the time of the next service.

 

[ViperSlider]

According to the sites own model search for mk3 Leon Cupra, 5Q0121407AA - Currently on sale at just under £19 on Seat Direct Parts

SEAT Leon 2013-2020 Coolant Expansion Tank 5Q0121407M SEAT Direct Parts

SEAT Direct Parts SEAT Leon 2013-2020 Coolant Expansion Tank - SEAT Parts - Genuine SEAT Parts - 5Q0121407M - Header tank- 5Q0121407F- Genuine SEAT Parts

seatdirectparts.co.uk

With that being said, ETKA shows 5Q0121407M as the correct updated tank without the bag for my 2016 mk3 Cupra 290, which is also on sale for just under £19

SEAT Ateca 2016-2020 Coolant Expansion Tank5Q0121407M

SEAT Direct Parts SEAT Coolant Expansion Tank-Genuine SEAT Parts - 5Q0121407M - Header tank- 5Q0121407F- Genuine SEAT Parts and Accessories -

seatdirectparts.co.uk

 

[Mr Pig]

Why not just pull out the bag?

 

[DEAN0]

Why not just pull out the bag?

Depending on which bottle was fitted at the factory - you can't access the silica bag/capsule

 

[nd-photo.nl]

Its a bit of a hassle, but you can remove the silica bag. Just make sure you have G12Evo in your system, as this contains silica. G13 should not have the silica added and relies on the bag.

Use angled needle nose pliers and you are able to remove it

 

[SuperV8]

Its a bit of a hassle, but you can remove the silica bag. Just make sure you have G12Evo in your system, as this contains silica. G13 should not have the silica added and relies on the bag.

Use angled needle nose pliers and you are able to remove it

Not ALL tanks have this 'tea bag'!
By all means - if you look through the filler neck and see a 'tea bag' you can carefully remove it and change your coolant to G12evo - but my tank, like the image above has a self contained silica bag - which is not accessible - you'd have to cut the tank open to get to it - so in this case you'd need a new tank without 'mit silicate'
I'm not convinced these type of tanks can leak the silicate - as it is contained in its own chamber - but new tanks aren't expensive so might be prudent to change when you change/flush your coolant.

 

[nd-photo.nl]

Aha that explains, I did not know that. Thanks for clarifying!