Intake air filter help

V

veryhuman

Member
 Toronto
Hi, can someone tell me the difference between these two intake filters, both are OEM (according to Ebay sellers)
BMW13721730946_A.jpg


LX551.jpg


They both fit the same space, its basically one with the black layer, one without.
I bought one without black layer, but my Z4 came with a filter with the black layer..

I'm confused. which one is for the Z4, and what's the difference, any help is appreciated. :(
 
The sponge shouldn't be attached to the filter: is just to protect it during S&H. Mahle and Mann are two OEM used by BMW in several parts (filters, joints, bushings, etc). You should be good.
 
Wait, I take that back: the sponge is actually part of the filter.
But anyway, the BMW branded filter is manufactured by Mann; the one with the sponge by Mahle. Both work fine.
 
Yea, the sponge is actually glued to the paper filter in this order (outside air -> sponge -> paper filter -> to the engine)

At the moment I fit the one without sponge into the intake, its fairly a tight fit after the clamps, is that normal?
 
My 04/04 build uses the filter with the extra filter. I replaced the oem filter with an Hp filter, which is a high air flow filter. My gas milage also improved by 2 mpg.
 
Hi all,


I've just joined the forum so thought I'd say 'hi' and add to this thread. I bought my 2.5i Z4 Roadster (2007) from BMW Park Lane here in London - for those outside of the UK, this is the only dealership (to my knowledge) that is owned directly by BMW UK, and not a franchise.

Anyhow, when I checked my air filter, it seemed a little worse for wear and so after much deliberation over a K&N filter, I went for a Mahle LX-1250 filter. Having fitted the part, all seems well and if anything, the Z feels sharper in throttle response and sounds as though its 'asthma' has been cured.

Disappointingly, it seems the air filter wasn't changed prior to buying the car (I've attached a comparison photo at; http://goo.gl/HxoGBZ ) - any advice as to anything else they may have skimped on?



Many thanks in advance :thumbsup:
 
Hi KJ,

Welcome to the forum! It'd be good if you could post some photos of your car in the newbie section.
At the very least do a full oil service including cabin filter. Depending on the miles, an Inspection I or perhaps even II may be in order.
 
bcworkz said:
Hi KJ,

Welcome to the forum! It'd be good if you could post some photos of your car in the newbie section.
At the very least do a full oil service including cabin filter. Depending on the miles, an Inspection I or perhaps even II may be in order.
Click to expand...

Hi bcworkz,


Many thanks for the reply - I'll be sure to post some pics soon!

The Mahle seems to be doing the job rather well - things seem somewhat 'smoother'.

Disappointed in BMW Park Lane though, I'd expect it off a franchise, but not off the Flagship 'Stealer'...!


Thanks again!
 
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