aFe Power Magnum FLOW Pro DRY S Drop-In Filter for BMW X3 X4 N20
by aFe Power
Key Features
- Fits F25 X3 xDrive28i 2011-2017 and F26 X4 xDrive28i 2015-2018
- Pro DRY S synthetic media - no filter oil required, ever
- Direct OE replacement, stock airbox fitment
- Higher airflow than factory paper element
- Washable and reusable - lower long-term cost than OEM
- Verify part number 31-10257 against your build before ordering
Product Details
- Brand
- aFe Power
- Category
- Cold Air Intakes
- ASIN
- B010LYD3U8
Check if it fits your BMW
aFe Power Magnum FLOW Pro DRY S Drop-In Filter for BMW X3 X4 N20 — Overview
This is a direct OE replacement air filter from aFe's Magnum FLOW lineup, built for the N20 four-cylinder in the F25 X3 xDrive28i (2011-2017) and F26 X4 xDrive28i (2015-2018). It uses aFe's Pro DRY S media - a synthetic dry filtration layer that flows better than the stock paper element without needing oil. Drop it into the factory airbox and you're done, no modifications, no re-tune needed. If you want more airflow out of the N20 without the hassle of a full cold-air kit - or you just want to stop throwing money at paper OEM filters every service interval - this is the logical move. The dry synthetic media means no oily residue migrating toward the MAF sensor, which is a real concern with oiled filters on the N20. It is not a performance cold-air intake, so do not expect seat-of-the-pants gains, but it is a smarter, longer-lasting alternative to the OE filter.
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