Weistec

We will now be offering a drop in filter replacement. These Weistec filters are compatible with the 5.5 Biturbo and the 4.7 Biturbo (M157 and M278 engines). When analyzing the factory airbox and flow characteristics we found the placement of the filter in the box to be a significant restriction. Improvements in filter shape and positioning, combined with our very own high flow element provides a significant flow and power increase across all ranges of the engines power band.

View these on Weistec.com

Key Features:

• Adds 5-20 Horsepower
• Increased Flow Area
• Optimized Airbox fitment over factory filter
• Amplifies the performance of your Weistec ECU Tune
• Set of 2

Dueclaws

Do these fit the 2012 E550 coupe and cab?

Feel free to PM or email me
Thanks

JumpinJim

You can get a pair of BMC filters cheaper (part FB224/01). Why get these?

jacob502

Are you sure those are for the M157?

Because I just checked and they dont seem to be!

Tony007

Weistec,

Do you have any dynos to show the air filter/tune combo vs tune only?

vdubpower

well i would assume 5-20 hp regardless, as thats what they say it might increase..... and i think with that range, its a tossup

Tony007

I'm really interested to see how it affects their curve.

hyperion667

exactly.....why buy anything from guys trying to take advantage of forum members

JumpinJim

Yes, right off BMC's website. The BMCs are baically the same and $100 cheaper for the pair.
Model HP Year ID/Chassis Engine Code Shape Code
63 AMG [2 Filters Required] 525 11 > M157DE55AL Flat FB224/01


If you want even cheaper K&N makes them for the V8 biturbo as well.