In cabin air filter replacement

[pcrispy]

I was about to order some new in cabin air filters for my G12 (Current parts are MAHLE LAK675/2) for the front passenger side compartment since it's so easy to do (I cleaned debris from mine, but they are clearly due for a yearly change to keep the air fresh). While looking for the filter pair online (dealer wants to change them when they do the spark plugs, but doing it myself saves about $150) and I ran across some documentation for a rear micro filter apparently if you have P4NF (extended rear air conditioning). I don't have the executive back seat stuff, so I'm guessing it refers to that. Does that package give air vents in more places than just the center console then? Just curious.

https://www.newtis.info/tisv2/a/en/g...ter/1VnYkBLi5n

Also, any better alternatives to cabin air filters than the MAHLE?

[jlin101]

Have you looked at BMW 64116996208 Genuine OEM Filter Element on ebay or https://www.fcpeuro.com/products/bmw...366401#fitment

[pcrispy]

Originally Posted by jlin101

Have you looked at BMW 64116996208 Genuine OEM Filter Element on ebay or https://www.fcpeuro.com/products/bmw...366401#fitment

I looked at some of the OEM parts, which are astronomical pricing, and I'm guessing that they are just rebranded from someone else anyhow. Ultimately, a paper filter is what it is, but the activated charcoal from one guy may definitely not be as good as another's version. I ordered new MAHLE versions since I know they seem to work well.

[pcrispy]

When replacing the cabin filters, there are no instructions for which direction the air flow travels (important for the charcoal filters). I read some discussions online for other models that had people arguing that the arrows should point towards the rear of the car (pointing inside) and some argued that it should point towards the engine (pointing outside). I watched some videos and one guy said the arrows should point towards the inside of the car which makes sense to me, so I installed them that way (charcoal facing the engine). Newtis wasn't much help either since the filter enclosure doesn't specify which way the air flows.

https://www.newtis.info/tisv2/a/en/g...nce/1VnYMyffbu

Anyone know for sure?

[STR3T]

House air filter have arrows going with the direction of airflow (so away from furnace body). Assume cars would do same...

[Al Pinã]

Originally Posted by STR3T

House air filter have arrows going with the direction of airflow (so away from furnace body). Assume cars would do same...

Logic would dictate that this is correct for your car filters as well.

[Moopai]

Are cabin air filters covered under the CPO Warranty?

Originally Posted by pcrispy

I was about to order some new in cabin air filters for my G12 (Current parts are MAHLE LAK675/2) for the front passenger side compartment since it's so easy to do (I cleaned debris from mine, but they are clearly due for a yearly change to keep the air fresh). While looking for the filter pair online (dealer wants to change them when they do the spark plugs, but doing it myself saves about $150) and I ran across some documentation for a rear micro filter apparently if you have P4NF (extended rear air conditioning). I don't have the executive back seat stuff, so I'm guessing it refers to that. Does that package give air vents in more places than just the center console then? Just curious.

https://www.newtis.info/tisv2/a/en/g...ter/1VnYkBLi5n

Also, any better alternatives to cabin air filters than the MAHLE?

[pcrispy]

Here's a list of what's NOT covered under CPO, filters being one of those items.

https://cpo.bmwusa.com/Content/docs/...NotCovered.pdf

[740I_yeye]

Originally Posted by pcrispy

Here's a list of what's NOT covered under CPO, filters being one of those items.

https://cpo.bmwusa.com/Content/docs/...NotCovered.pdf

In the Uk it covers everything except maintenance, wow thats tough man