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WARNING! Bosch oil filters for 1.2 tsi EA111 CBZA/CBZB engines

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The note at the end of that Mann document supports the part number stuff I was offering above. Not interchangeable between the pre- and post 8/9 March 2010 versions.

  • 4 months later...

DELETED

 

 

 

Edited by briscaF1

Edited.....dunno what happened when posting via my phone....!

 

Hi all,

 

I found this thread half way though changing oil and filter and am maybe glad that I did.

 

I'd bought a Bosch filter the other day, with the correct part number for the CBZA.

 

The part number on the box suggests it is correct. Part number on the filter matches the box and is "Made in France." (Who manufacturers filters in France at the moment?)

 

IMG_20231012_180422.thumb.jpg.81d6bccf7606340c6634e90f0ed054a8.jpg

 

I didn't look too closely at the filter until changing the oil earlier when I put it next to the Mahle it was replacing (below). The Bosch filter is a little smaller and doesn't have the "shoulder" seal like the Mahle.

 

So, I guess these possibly incorrect filters are still in circulation (mine came from Amazon).

 

I've ordered a Mann, like I should have in the first place, and I guess I'll get in to customer services to see what they have to say about it.

 

I guess the filter may be perfectly correct and maybe it was just a coincidence that someone had an engine problem with this filter fitted but I'd rather not find out the expensive way that it isn't.

 

Thanks for the heads up @xman

 

IMG_20231012_174715.thumb.jpg.5040d8b13570c36870e1eaecb81b7af9.jpg

IMG_20231012_180404.jpg

Edited by briscaF1

39 minutes ago, briscaF1 said:

Edited.....dunno what happened when posting via my phone....!

 

Hi all,

 

I found this thread half way though changing oil and filter and am maybe glad that I did.

 

I'd bought a Bosch filter the other day, with the correct part number for the CBZA.

 

The part number on the box suggests it is correct. Part number on the filter matches the box and is "Made in France." (Who manufacturers filters in France at the moment?)

 

IMG_20231012_180422.thumb.jpg.81d6bccf7606340c6634e90f0ed054a8.jpg

 

I didn't look too closely at the filter until changing the oil earlier when I put it next to the Mahle it was replacing (below). The Bosch filter is a little smaller and doesn't have the "shoulder" seal like the Mahle.

 

So, I guess these possibly incorrect filters are still in circulation (mine came from Amazon).

 

I've ordered a Mann, like I should have in the first place, and I guess I'll get in to customer services to see what they have to say about it.

 

I guess the filter may be perfectly correct and maybe it was just a coincidence that someone had an engine problem with this filter fitted but I'd rather not find out the expensive way that it isn't.

 

Thanks for the heads up @xman

 

IMG_20231012_174715.thumb.jpg.5040d8b13570c36870e1eaecb81b7af9.jpg

IMG_20231012_180404.jpg

Looks like wrong Bosch strikes again.

  • 3 months later...

Bump.

  • 5 months later...

Bump again.  Worth being a 'Pinned' thread. 

  • Monkhai pinned this topic
  • 9 months later...

Sorry to revive this discussion.

Just received a replacement filter from ECP and I remembered scrolling by this thread.

See attached - black filter from ECP vs silver one currently fitted.

Am I right in saying this is the incorrect one and I should exchange this for a MANN filter instead?

Mine is a CBZB 1.2TSI

IMG_1505.jpeg

IMG_1508.jpeg

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Looks wrong to me.

What year is the car @TSIspirit ?

2011 - its had a new engine though (ugh) so would need to check the actual build date.

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Build date of current engine is the only relevant one.

If the currently fitted Mann filter has given no trouble, then just buy another with same PN.

Edited by Breezy_Pete

Yeah ordered the out for collection, will exchange tomorrow. Thanks!

  • 3 months later...

Got the same low oil pressure issue with my Seat Leon 1p1 CBZB engine and found this lovely forum while google-digging.

Sharing some details:

03C 115 561 H - VW part number for oil filter

MANN-FILTER W 712/94 - Original OEM manufacturer filter
https://www.mann-filter.com/uk-en/catalogue/search-results/product.html/w712/94_mann-filter.html

image.png

Bosch part:
Part number: F 026 407 183
Trade number: P7183
https://www.boschaftermarket.com/gb/en/parts/-/Details_of_Oil_filter_spin-on_box_for_vehicle_Seat_Leon_1.2_TSI_2010_-_2012_77kW_CBZB/pi/categories/Filters/products/F026407183/vi/vehicle/ARNoLpf/

If you open oil filter details in Bosch catalog by the link below, then click on filter image - image gallery will appear and surprisingly it contains both old (silver) and new (black) filters:
image.png
image.png


It seems the old one Bosh filter is MANN-FILTER W 712/94 while new one (per shape, construction and printing style) seems a PURFLUX LS391A
https://www.purfluxgroupcatalog.com/catalogues/FO/scripts/cat_fich_filtre.php?zone=FR&catalogue=PFX&lang=GB&ref_filtre=LS391A

image.png

Difference is that MANN filter has more soft, more thick and removable rubber valve at the top of plastic part, while PURFLUX has more rigid and thin layer of rubber hardly mounted (glued?) on plastic part. Also metal spring under the plastic in MANN filter is 2 times bigger and more strong.

Seems the root cause of low oil pressure is:
Rubber valve construction & because of that valve difference using recommended by PURFLUX fitting procedure (ie tight till rubber sealing touches the gasket and then additionally rotate to 270 degrees) results that thick and rigid valve rubber just got damaged by the edge of oil channel.

Workaround (if you unfortunately got Purflux-style filter):
Just remove plastic valve, spring (under the valve) and rubber sealing ring from your new PURFLUX-style filter and replace them by the parts from your old MANN-style filter - the mount is the same and parts appears to be compatible. Also I would recommend to put an oil on valve rubber as well as on sealing prior to fitting a filter so that it will better slide on oil channel edge during the final tightening. Works good for me (but next time I'll order MANN's one ;) ).

PS: apologies for my non-native English.

  • 2 weeks later...

Let it lie here for a bit:

image.png

And the single reply as of 7.30.2025:

image.png

On 24/05/2023 at 17:08, stevoablett said:

Xman

Xman, yes only ever hand tighten the oil filter and lube up the rubber seal and clean the metal surface it sits on. Perhaps I'll just tighten it finger tight in the future. But surely that's academic if it's the wrong filter? I've  now ordered a Mann filter I'm done with Bosch.

 

 

 

Stevoablett, once you changed to the correct Mann filter did the rattle noise disappear?

  • 4 weeks later...

Well the wrong oil filter from Bosch still seems to be in circulation. I do not remember if it was purchased via ECP or Halfords but a new Mahle filter differs with the shoulder seal.

All that said however, is I do not see how the difference in the shoulder seal can make any difference between the filters, the shoulder seal does not seem to have any use over the the normal surface seal.

  • 5 months later...

Hi folks. New type of our filter just dropped. It looks like this and has of course the same number as the others: F 026 407 183. Please be careful, because I've installed it in my car and almost broke my engine.

unnamed.jpg

I've got CBZA. You're right this filter looks like the one that linked, but the numbers are incorrect.

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