[eric_gm]

I'm a regular at The Autopian and I just read this:

https://www.theautopian.com/the-stou...achilles-heel/

https://www.reddit.com/r/BMW/comment...es_check_your/

TL;DR is that pre ~2020 B58 engines are prone to oil pump failures due to plastic rotor housing. At some point around 2020 BMW updated the oil pump design along with a superseding part #.

Never seen threads about this being a chronic issue here. Thoughts?

[ezaircon4jc]

Originally Posted by eric_gm

I'm a regular at The Autopian and I just read this:

https://www.theautopian.com/the-stou...achilles-heel/

https://www.reddit.com/r/BMW/comment...es_check_your/

TL;DR is that pre ~2020 B58 engines are prone to oil pump failures due to plastic rotor housing. At some point around 2020 BMW updated the oil pump design along with a superseding part #.

Never seen threads about this being a chronic issue here. Thoughts?

The article seems to indicate the SUVs are the problem; don't know why. I haven't read about oil pump failures on this, or the F10 forums. I know the oil has to be at a certain temp to measure (other than the generic, green engine symbol). I've tried after a long drive (a couple of hours) and it won't give me a level. It will give me a level right after the oil reaches operating temp. Dealer says this is normal for the B58.

[eric_gm]

It's confusing because the pump part # mentioned in that article seems to be considerably different from the one my 2017 G30 has.

The article mentions part 11419895359 as the upgraded pump from the ZTK package. Meaning that the problematic (aka. non-ZTK) pump must be: 11418646453, and that one was indeed used in our G30s between 07/2018 and 12/2019. RealOem shows B58C and B58D as the engines using it.

Mine being older uses a different pump (Mahle 11417643046) and my B58 has no revision letter, but it's unclear whether or not pumps outside that date range above also have plastic housings. Can't tell from photos because the inner housing can't be seen unless the pump is disassembled.

[ezaircon4jc]

Originally Posted by eric_gm

It's confusing because the pump part # mentioned in that article seems to be considerably different from the one my 2017 G30 has.

The article mentions part 11419895359 as the upgraded pump from the ZTK package. Meaning that the problematic (aka. non-ZTK) pump must be: 11418646453, and that one was indeed used in our G30s between 07/2018 and 12/2019. RealOem shows B58C and B58D as the engines using it.

Mine being older uses a different pump (Mahle 11417643046) and my B58 has no revision letter, but it's unclear whether or not pumps outside that date range above also have plastic housings. Can't tell from photos because the inner housing can't be seen unless the pump is disassembled.

I was searching the p/n and different models on a BMW parts website. P/N 11417643046 fits a 2019 M240, but not a 2020 M340; both have a B58. IIRC, the B58x engines were the updated B58s. Maybe the "update" included a water pump with a plastic impeller...

[eric_gm]

Originally Posted by ezaircon4jc

Maybe the "update" included a water pump with a plastic impeller...

It's an inner layer of the housing what's plastic, not the impeller (although BMW has a history of making plastic impellers, especially in water pumps).

There are also precedents of BMW "downgrading" materials used in engine updates. The M52 had aluminum coolant pipes under the intake manifold. The M52TU switched to hard plastic pipes, which of course get brittle constantly and leave you stranded.

[ezaircon4jc]

Originally Posted by eric_gm

It's an inner layer of the housing what's plastic, not the impeller (although BMW has a history of making plastic impellers, especially in water pumps).

There are also precedents of BMW "downgrading" materials used in engine updates. The M52 had aluminum coolant pipes under the intake manifold. The M52TU switched to hard plastic pipes, which of course get brittle constantly and leave you stranded.

I just reread the article and read impeller instead of housing Thanks.

[Neusser]

Originally Posted by eric_gm

It's confusing because the pump part # mentioned in that article seems to be considerably different from the one my 2017 G30 has.

The article mentions part 11419895359 as the upgraded pump from the ZTK package. Meaning that the problematic (aka. non-ZTK) pump must be: 11418646453, and that one was indeed used in our G30s between 07/2018 and 12/2019. RealOem shows B58C and B58D as the engines using it.

Mine being older uses a different pump (Mahle 11417643046) and my B58 has no revision letter, but it's unclear whether or not pumps outside that date range above also have plastic housings. Can't tell from photos because the inner housing can't be seen unless the pump is disassembled.

Can't find anything on this over here in Germany, except one thread in a forum. Guy has an M340 from 2019 and had the problematic pump.

https://www.g20-forum.de/forum/threa...-defekt-m340i/

Have otherwise never heard or read about this issue at all here.

My 2019 Euro-market car has a "B" engine (non-TU), so not worried.

[aerof16]

First heard of this issue with the G05 X5 - I think only the 2019 (maybe some early 2020s?) were affected by it before the change was made. B58c?

Everyone in the G05 community is concerned about it I guess - I’m not too worried about it with my G05, I think it’s an overblown concern.

[tjbuggy2b]

Would love to know which G30 part numbers are affected. The article heavily implies "any" early B58 but then states it's been mainly affecting G05s and G20s (maybe.)

[eric_gm]

Originally Posted by tjbuggy2b

Would love to know which G30 part numbers are affected. The article heavily implies "any" early B58 but then states it's been mainly affecting G05s and G20s (maybe.)

I replied to my own comment in The Autopian article with precisely that information. I'm a bit upset the journalist didn't bother to do more research. My pump (11417643046) has seen zero revisions/updates from BMW, which hopefully means it's unaffected.

Quoting my own comment here for reference:

"So, after some quick digging, this is the allegedly problematic pump and here is the list of BMW models and production dates that use it. It was used only for a bit more than 1 year between 2018 and 2019 and only for certain B58C and B58D engine revisions. Not to say other pumps didn’t have plastic housings, but again, I think this is a bit overblown, especially considering the myriad B58s that are tuned to hell and using their stock pumps."

11418646453
Oil pump

From:08/01/2018 To:-

Part 11418646453 was found on the following vehicles:
3' G20   (01/2018 — 12/2019)
3' G21   (10/2018 — 12/2019)
5' G30   (07/2018 — 12/2019)
5' G31   (07/2018 — 12/2019)
6' G32 GT   (07/2018 — 12/2019)
X3 G01   (05/2018 — 12/2019)
X4 G02   (05/2018 — 01/2020)
Z4 G29   (10/2017 — 12/2019)

And the G30 specifics:

Part 11418646453 was found on the following G30 vehicles:
5' G30, 540i, Sedan, B58C, EUR, (JS11) : Lubrication system/Oil pump with drive
5' G30, 540i, Sedan, B58C, EUR, (JS12) : Lubrication system/Oil pump with drive
5' G30, 540i, Sedan, B58C, USA, (JS13) : Lubrication system/Oil pump with drive
5' G30, 540iX, Sedan, B58C, EUR, (JS31) : Lubrication system/Oil pump with drive
5' G30, 540iX, Sedan, B58C, EUR, (JS32) : Lubrication system/Oil pump with drive
5' G30, 540iX, Sedan, B58C, USA, (JS33) : Lubrication system/Oil pump with drive

Part 11418646453 was found on the following G31 vehicles:
5' G31, 540iX, Touring, B58C, EUR, (JT71) : Lubrication system/Oil pump with drive
5' G31, 540iX, Touring, B58C, EUR, (JT72) : Lubrication system/Oil pump with drive

[tjbuggy2b]

Oh, cool! Thanks for that. Looks mine is JUST before the time period, 12/2017, with the 11417643046. Good bit of overlap, though, my model to later build dates. Might explain some of the unpredictable nature of the issue.

https://www.realoem.com/bmw/enUS/par...&q=11417643046

11417643046
Oil pump
From:07/01/2015To:-Weight:2962.230 kgPrice:
Part 11417643046 was found on the following vehicles:
1' F20 LCI   (09/2015 — 06/2019)
1' F21 LCI   (09/2015 — 06/2019)
2' F22   (09/2015 — 06/2017)
2' F22 LCI   (09/2016 — 12/2019)
2' F23   (09/2015 — 06/2017)
2' F23 LCI   (10/2016 — 12/2019)
3' F30 LCI   (10/2014 — 10/2018)
3' F31 LCI   (10/2014 — 06/2019)
3' F34 GT LCI   (09/2015 — 12/2019)
4' F32   (04/2015 — 02/2017)
4' F32 LCI   (05/2016 — 12/2019)
4' F33   (03/2015 — 02/2017)
4' F33 LCI   (05/2016 — 12/2019)
4' F36 Gran Coupé   (03/2015 — 02/2017)
4' F36 Gran Coupé LCI   (05/2016 — 12/2019)
5' G30   (10/2015 — 06/2019)
5' G31   (03/2016 — 06/2019)
6' G32 GT   (09/2016 — 06/2019)
7' G11   (10/2014 — 01/2019)
7' G12   (10/2014 — 02/2019)
X3 G01   (10/2016 — 07/2019)
X4 G02   (03/2017 — 07/2019)

11418646453
Oil pump
From:08/01/2018To:-Weight:2619.130 kgPrice:
Part 11418646453 was found on the following vehicles:
3' G20   (01/2018 — 12/2019)
3' G21   (10/2018 — 12/2019)
5' G30   (07/2018 — 12/2019)
5' G31   (07/2018 — 12/2019)
6' G32 GT   (07/2018 — 12/2019)
X3 G01   (05/2018 — 12/2019)
X4 G02   (05/2018 — 01/2020)
Z4 G29   (10/2017 — 12/2019)

[eric_gm]

Your pump is the same as mine. What I would say is: if you see superseding part numbers (updated pumps) then perhaps you should consider proactively replacing it. Otherwise this is probably a non-issue.

That being said, I can't find where BMW is recommending the ZTK pump as an upgrade in compatible engines (those that use 11418646453). Realoem's database is a bit old (only goes up to 12/2019) so maybe there's a service bulletin or similar sent to dealers? If someone has access to that, it would clarify a lot of things.

[tjbuggy2b]

BMWPARTSNOW still lists the same model as REALOEM model for our build dates.

https://www.bmwpartsnow.com/v-2018-b...gine--oil-pump

The only pump on FCPEuro is the ZTK pump for the 2020/2021 G30.

https://www.fcpeuro.com/products/bmw...895359#fitment

My car is in the shop for the AC evaporator (my bank account is crying over that one). I'll see if the service manager can shed some light on the topic, when I go pick it up sometime this week (hopefully.)

[S6F]

Can someone tell us what the symptoms might be for the pump going bad? Appreciated.

[aerof16]

Originally Posted by S6F

Can someone tell us what the symptoms might be for the pump going bad? Appreciated.

Just click the link and read the article.

I’m not overly worried about it. Everyone who is stressing about this keeps referencing the same few articles and examples, I haven’t really read much that makes me think there are enough documented failures to make this a real concern,

[eric_gm]

It’s in the article linked in my first post. But in short: the first symptom is a car that is unable to perform the oil check routine. It gets stuck at some percentage and never finishes. A crumbling plastic housing initially causes abnormally high oil pressure and then catastrophic engine damage. I imagine it can fail suddenly with no symptoms too, so if your car has the allegedly problematic part, I’d find an excuse to replace it preventatively, at least if you live in a place where winters get very cold.

[JoeFromPA]

We are talking about a problem that would be emerging in factory warranty and CPO vehicles and lots of them. Need some more data.

Also, cue every vendor under the sun selling an all metal oil pump for a goodly price.

[popthief]

Originally Posted by eric_gm

It's confusing because the pump part # mentioned in that article seems to be considerably different from the one my 2017 G30 has.

The article mentions part 11419895359 as the upgraded pump from the ZTK package. Meaning that the problematic (aka. non-ZTK) pump must be: 11418646453, and that one was indeed used in our G30s between 07/2018 and 12/2019. RealOem shows B58C and B58D as the engines using it.

Mine being older uses a different pump (Mahle 11417643046) and my B58 has no revision letter, but it's unclear whether or not pumps outside that date range above also have plastic housings. Can't tell from photos because the inner housing can't be seen unless the pump is disassembled.

Hi, I just made an account to post here because I was doing in-depth research into this.

I happened to stumble across an FCP Euro tiktok video where they disassemble the 11417643046 oil pump. Great news, it is a metal internal housing. Just look at the video.

You can tell it's the 11417643046 and not the other 11418646453 (problematic one), because in that video, on their table at about 0:11, they have the black cover that is unique to this oil pump. The 11418646453 has a metal cover.

https://www.tiktok.com/@fcpeuro/vide...79147953212718

I even called Mahle earlier to confirm but they didn't know. Then I found this video out of pure luck.

[lnxguy]

Overblown. Most of the B58s affected were in the X5s, not the G30s.

[sp540]

Originally Posted by popthief

Hi, I just made an account to post here because I was doing in-depth research into this.

I happened to stumble across an FCP Euro tiktok video where they disassemble the 11417643046 oil pump. Great news, it is a metal internal housing. Just look at the video.

You can tell it's the 11417643046 and not the other 11418646453 (problematic one), because in that video, on their table at about 0:11, they have the black cover that is unique to this oil pump. The 11418646453 has a metal cover.

https://www.tiktok.com/@fcpeuro/vide...79147953212718

I even called Mahle earlier to confirm but they didn't know. Then I found this video out of pure luck.

@popthief, are you sure that the part on 11417643046 is metal? Judging by the video on TikTok, it is also plastic(

[jimscamp]

My July 2020 G31 540i had this over Christmas.

No symptoms, was dropping off a friend, pulled up to their house and *bong* "low oil pressure, pull over and immediately turn off engine etc".

Got recovered, my local BMW dealer did an investigation and yea, the plastic part of the oil pump had failed.

It was repaired under the extended warranty I pay for, but I'm going to assume it would have cost a fair bit without the warranty as it was a good day or so for them to diagnose, let alone fix and they had to drop the sub-frame, remove parts of the engine and re-do the wheel tracking.

In hindsight the check oil level routine would quit at around 20% the past few times I tried it. I didn't worry and assumed the engine wasn't up to temperature, but I now know this is a sign the pump is failing.

Hopefully the new pump is solid!

[eric_gm]

Originally Posted by sp540

@popthief, are you sure that the part on 11417643046 is metal? Judging by the video on TikTok, it is also plastic(

Yup, it's also plastic. In the video you can easily confuse that with metal as it's so shiny from the oil. The good news is that it seems the plastic on the 11417643046 at least seems to be more durable.

This is a good video that explains that it's the inner adjusting ring that's made of plastic. The exterior of the housing and the impeller/blades is metal in all of them: