Thx
30.3KVIEWS
30REPLIES
9APPRECIATES
23ACTIVE PEOPLE
05-09-2026LAST POST
Thx
Unfortunately, even 2021 model year cars can have the earlier nylon ring oil pumps.
I have a DEC 2021 B58 and will confirm with the dealership tomorrow which pump is in my engine.
No issues to-date (47,000 miles)
gsrbri wroteWhat is interesting is that RealOEM does not ever show this part number as applicable for G05. Only for other B58 cars some time in 2020.Research shows that BMW began some replacements w/an upgraded plastic ring pump in 2019 and 2020. Metal ring pumps (-359 part number) began to appear on ZTK 3 series in 2020 and on other B58 engines around this time.
Unfortunately, even 2021 model year cars can have the earlier nylon ring oil pumps.
I have a DEC 2021 B58 and will confirm with the dealership tomorrow which pump is in my engine.
No issues to-date (47,000 miles)
Good peace of mind
gsrbri wrotegood to hear you have the updated pump just had mine done at a indy shop (2020 40i ). it wasn't cheap but i plan on keeping the vehicleI just confirmed at the BMW parts counter that my vehicle (VIN) came from the factory with the -359 oil pump (metal surround). No superseded part number
Good peace of mind
jhnmdahl wroteYeah, my indy shop that replaced my oil pump pointed this out. He thinks it was done like this to avoid a lawsuit or major recall. Frustrating.One problem is that both the old part and the new part appear to have the same part number but different revisions for a given car. The old ones with plastic are revision 5, and the new ones with the metal exterior adjusting ring are revision 6 (11418646454 if you have an X5 or similar). If you have another car like a 540, the oil pump may be 11419895359 with plastic parts, which also needs to be replaced with the same part number but revision 6.
jhnmdahl wroteYeah I'm not sure how people are able to determine which version they have when realOEM shows no difference in part number for an oil pump on a 2019 X5 vs a 2023 (both pre LCI of course). Maybe dealers have access to more sophisticated build sheets with part numbers and revisions?One problem is that both the old part and the new part appear to have the same part number but different revisions for a given car. The old ones with plastic are revision 5, and the new ones with the metal exterior adjusting ring are revision 6 (11418646454 if you have an X5 or similar). If you have another car like a 540, the oil pump may be 11419895359 with plastic parts, which also needs to be replaced with the same part number but revision 6.
rlesko wroteAs far as Gemini knows, there is no way to tell old vs. new for X5 unless you check part sticker, because BMW (purposely) kept the same part number but add revision suffix to the part. If you look up realoem website, it has a warning for the part.Yeah I'm not sure how people are able to determine which version they have when realOEM shows no difference in part number for an oil pump on a 2019 X5 vs a 2023 (both pre LCI of course). Maybe dealers have access to more sophisticated build sheets with part numbers and revisions?
Here is what I asked Gemini: What's this on realoem?
"Attention! Observe PuMA measure 65494813 .?)
Gemini's response, which makes sense.
If you are seeing **"Attention! Observe PuMA measure 65494813"** on RealOEM (or in a BMW parts catalog), you’ve just stumbled upon one of the most discussed technical warnings for modern BMW engines—specifically the **B58** straight-six.
Here is the breakdown of what it means and why it matters.
### 1. What is a "PuMA Measure"?
**PuMA** stands for *Problem und Maßnahmenmanagement Aftersales* (Problem and Measures Management Aftersales). It is an internal BMW database where dealerships report known issues and BMW engineers provide specific fixes.
When a part number in the catalog has a PuMA note, it means:
> **"Stop. Don't just swap this part blindly. There is a specific known issue and a required technical procedure you need to follow."**
### 2. What is Measure 65494813 specifically?
This specific measure refers to a known failure point in the **B58 engine oil pump** (common in 2019–2021 models like the M340i, X5 40i, and Supra).
* **The Issue:** The original oil pumps were designed with a **plastic adjuster ring** inside. Over time, or due to thermal stress, this plastic ring can crack or shatter.
* **The Symptom:** Usually, the first sign is a notification that the **"Oil Level Measurement Failed"** or a "Low Oil Pressure" warning.
* **The Fix:** BMW updated the part to a newer version (often SKU **11419895359**) that uses a **metal/steel ring** instead of plastic.
### 3. Why is it on RealOEM?
RealOEM is showing you this because if you are looking to buy a replacement oil pump, you **must not** buy the old, superseded part number. The measure tells the technician to check the engine's software version and ensure the updated mechanical part is used.
### 4. What should you do?
* **If your car is running fine:** Don't panic, but keep it on your radar. Many owners of earlier B58-equipped cars replace the pump proactively or wait for the "Oil Level Measurement Failed" warning.
* **If you are currently replacing the pump:** Make sure you are buying the updated part number that replaces the one mentioned in the PuMA measure.
* **Check for Software Updates:** The PuMA measure also involves a software update that changes how the oil pressure is regulated to reduce stress on the pump.
**The Bottom Line:** It's BMW's way of saying, *"We realized the old plastic pump design was a mistake; use the new metal one and follow our specific repair steps."* Sucks !
RealOEM can be confusing when parts are "in transition" or when the manufacturer keeps the same base part number but increments the "index." Here is exactly what is happening with that PuMA measure and the part numbers for your B58 engine.
The Part Number Situation
The reason you might only see one part number is that BMW often supersedes the old part entirely. In their system, the "bad" part essentially ceases to exist for new orders.
The Original (Problematic) Number: 11418646454 (often used in 2019–2020 builds).
The New "Super-Part" Number: 11419895359.
In many cases, if you search your VIN, RealOEM will only show the ...5359 number because that is now the only valid part you can order. Even if your car originally came with the ...454 version, the catalog "hides" it to prevent people from accidentally buying old stock of the plastic-ring version.
Why RealOEM doesn't show a "New" number for you:
Index Updates: Sometimes BMW keeps the same part number (like ...454) but updates the Index Number (the small digits often found after the main part number on the physical label, e.g., AI 01 vs. AI 06). The PuMA measure tells the dealer: "Only install this part number if the index is 06 or higher."
ZTK Package Differences: Interestingly, the "High Performance" cooling package (Option Code ZTK) always used the better oil pump (...5359). BMW eventually decided to just make that the standard pump for all B58 engines to solve the plastic ring failure.
Summary for your BMW X5:
If you are planning to replace this during your suspension overhaul or as proactive maintenance:
Verify the part: If you order a new pump today, it should be part 11419895359.
Physical Check: If the part delivered is 11418646454, check the Index. Current stock (as of early 2026) should be at Index 06 or higher, which features the aluminum support/metal ring.
Software: The "Measure" also suggests a DME software update. This update adjusts the oil pressure solenoid behavior to prevent the "pressure spikes" that were cracking the original plastic rings.
If your oil level measurements are currently working fine on your X5, you likely don't need to rush this, but definitely ensure any new pump you buy matches the ...5359 number.
Here is the definitive way to identify if you are looking at the "good" or "bad" part.
1. The Part Number Confusion
On RealOEM for the G05 X5, 11418646454 is often the only number listed. This is because, unlike other models where the part number changed entirely, for the X5, BMW kept the base part number but updated the internal design and the index number.
The Old Version: Part 11418646454 with Index 01 through 05. These have the plastic internal ring that is prone to cracking.
The New Version: Part 11418646454 with Index 06 or higher. These contain the updated metal/aluminum internal components.
2. How to verify before you buy
If you are ordering a brand-new part today from a dealer or a reputable vendor (like FCP Euro or BMW Parts Deal), you will almost certainly receive the Index 06+ version. BMW has cleared out the old "plastic" inventory from their warehouses.
To be 100% sure:
Check the sticker: Look for the white label on the part or the box. It will list the part number followed by two digits. You want to see 11418646454-06 (or higher). see FCP euro product page in attached screenshot.
The "359" Alternative: You might see people mention part 11419895359. This is essentially the same upgraded metal pump but often sold as a "kit" or under a different catalog designation for the M340i/Supra. While it fits the B58TU, your specific catalog points to the ...454 number because it is the officially validated unit for the X5 chassis.
3. What the PuMA Measure 65494813 actually says
The reason that warning is there is to tell technicians:
Do not replace the pump if the only symptom is a failed oil level measurement until you have updated the vehicle's DME software.
BMW released a software patch that lowers the oil pressure during the measurement test to prevent the pressure spikes that crack the plastic ring.
If the software doesn't fix it, or if you find plastic shards in the oil filter, replace the pump with the updated Index 06 unit.
Also this YT explained the part number confusion at 10:10 mark. I think it makes sense too.
