BMW 5 Series Cabin Air Filter: Intervals, Fitment & Warning Signs

On the 5 Series, recirculation mode has genuinely been documented causing a musty smell within a specific temperature range on related models.

Illustration for editorial purposes

Find BMW 5 Series Cabin Air Filter Here!

Opens live listings in a new tab.

OEM Part Number: confirm via VIN — cabin air filter (aftermarket) Febi 32593 / Valeo 715715

Accuracy note: Covers the BMW 5 Series (F10 2010-2017) as listed in the UK aftermarket catalogues. A cabin filter is a cheap part, but it is bought by number, and the number depends on whether your car was built with a standard particulate filter or an activated-carbon one, as well as on trim and build date. The references below are aftermarket catalogue listings for this generation, grouped by brand; the carmaker's own number is not quoted in those listings, so check the genuine filter against your VIN if you want a guaranteed match. Carbon versions carry their own numbers and are listed separately.

Cabin filter, standard (aftermarket)	Febi 32593, Valeo 715715, Purflux AH336-2, Hengst E2978LI-2
Activated-carbon version (aftermarket)	Febi 31985, Purflux AHC336-2, Hengst E2978LB-2
Genuine (OE) number	Not quoted in the catalogue listings — the fitted filter varies by trim and build date, so order the genuine one against your VIN
Fitment notes	Standard and carbon filters have different numbers, and the right size depends on trim and build date. Check which type your car was built with before ordering.

BMW 5 Series Cabin Air Filter: Easy to Forget, Easy to Fix

Of everything covered for the BMW 5 Series, this is about as low-stakes mechanically as it gets — it doesn't touch how the car drives at all. Its only job is cabin air quality, which is exactly why owners tend to ignore it until something makes that hard to do.

Before you buy: filter size and whether your car uses a standard or activated-carbon filter varies by trim. Always confirm against your VIN before ordering.

BMW 5 Series Cabin Air Filter: What It Does

On the BMW 5 Series, this filter sits in the ventilation intake, not the engine bay, and cleans the air reaching the cabin — trapping dust, pollen, and on carbon-activated versions, some odours and pollutants too. The engine air filter is a completely different part, serving combustion rather than the cabin.

BMW 5 Series Cabin Air Filter: Watch: Replacing It

🎬 Watch: How to change the Cabin/Pollen Filter in your BMW F10 5 series

Watch on YouTube ↗

BMW 5 Series Cabin Air Filter reference plate

Find BMW 5 Series Cabin Air Filter Here!

Opens live listings in a new tab.

A Genuinely Useful Piece of Context Worth Knowing About Musty Smells — BMW 5 Series Cabin Air Filter

If a musty smell only appears sometimes rather than constantly, this is genuinely worth knowing: running the system on recirculation mode has been documented causing a musty smell specifically within a certain temperature range on related BMW models, while switching to fresh air mode instead avoided the smell entirely.

A genuinely useful preventative tip worth knowing: switching the air conditioning off, while leaving just the fan running, for a couple of minutes before parking helps dry out the evaporator, genuinely helping prevent mould and mildew developing there.

It's also genuinely worth knowing that there isn't a separate "AC filter" distinct from the cabin air filter — they're the same single part, and it needs to be properly replaced rather than simply cleaned if it's genuinely causing a smell.

BMW 5 Series Cabin Air Filter: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Cabin Air Filter Guide for signs it needs changing, confirming fitment against your VIN, and choosing standard, carbon, or HEPA media.

More BMW Cabin Air Filter

The same part, covered across other BMW models.