BMW B38 B48 B58 B47 B57 Coolant Leak Oil Filter Module Failure

Here is a video of a failed oil filter module on a BMW B48 - Due to constant heat transfer/cycles the oil filter module becomes brittle and breaks apart, symptoms include coolant loss as well and oil leakage/loss.
Replacement requires removal of the intake manifold

[@joegoh1968]

This looks like the exact same part on my N13 engine. I was losing 1L of engine oil a week .. turned out to be a bad oil seal on the oil filter housing. Replacing the seal would be enough but most shops will try to get you to replace the entire housing.

[@BMWarrior1]

N13 oil filter module isnt made from plastic unlike the B series - a gasket change would be fine on a N13 however in the B series you will most likely need the whole oil filter module changed, they break apart over time/heat cycles.

[@2CREATthief]

Engine b38, Ive noticed a slight loss every 2 weeks. About 150-200ml every now and then. Is this a „normal“ amount? Maybe EGR?

[@BMWarrior1]

I would suggest to pressure test the coolant systems and check for leaks ❤️

[@tony1youtube]

Do you need to drain the engine oil before replace the housing?

[@BMWarrior1]

Yes, its recommended to drain the engine oil and coolant system prior to replacing the module. As part of replacing this module your going to be disconnecting hoses which are part of the cooling system - the less coolant in the system, the less mess. You should also remove the oil filter, allow the filter module to drain itself into the sump and then drain the engine oil - this will limit how much oil escapes out of the module when you remove it off the block and its also good to see if the failed module has caused the oil/coolant to mix into either circuit. Some people don't drain the engine or the coolant and simply remove the oil filter module - this can cause a lot of mess then draining both systems as recommended. Hope this helps and thanks for watching.

[@deutsch323]

Is it not recommended, to replace only sealing?

[@BMWarrior1]

As the video shows, the module itself has broken apart - replacing the gasket in this situation would not have done anything but caused the same leak. Hope this helps

[@deutsch323]

@@BMWarrior1 Thanks for you feedback.

[@BMWarrior1]

@@deutsch323 Thanks for watching! hope this helped

[@realbadasssss2333]

Same exact pronlem cost me $1700

[@BMWarrior1]

Good to know you fixed the issue - unfortunate about the cost 😮‍💨

[@timh3365]

This accessory is particularly fragile. So I bought the all-aluminum casting parts from China. It can solve this problem completely. It only costs $55.
If only the broken part is replaced, it only costs $11 to replace this part with a CNC-made aluminum part.

[@mati13821]

Number of the part is?

[@BMWarrior1]

This was on a B48 3 series - the part number was 11 42 8596283. I hope this helps and don't forget to subscribe for more content

[@jameswan670]

B48 and B47 is using same oil filter housing? Gas and Diesel will be same oil filter housing?