Mazda CX-3 Cabin Air Filter: Intervals, Fitment & Warning Signs

On the CX-3, RHD access is genuinely harder than the LHD versions shown in most online videos, according to a real UK owner.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — cabin air filter (aftermarket) Mahle LA1361 / Febi 184077

Accuracy note: Covers the Mazda CX-3 (2015-) 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)	Mahle LA1361, Febi 184077, Blue Print ADM52534, Corteco 49372543
Activated-carbon version (aftermarket)	Corteco 49124369
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.

Accuracy note: genuinely worth knowing: the filter's printed physical dimensions (length, width, depth) are the most reliable way to confirm fitment on a CX-3 if you're unsure of your exact model year, since the part is defined more by its housing size than by model name alone.

A Genuinely Important Warning Worth Knowing First: UK Access Differs From US Guides — Mazda CX-3 Cabin Air Filter

This is genuinely worth knowing before following an online video: one UK owner explicitly found that YouTube guides they'd found were all made for left-hand-drive American cars, and that the right-hand-drive UK version genuinely isn't as straightforward to access by comparison. It's worth specifically seeking out UK or RHD-specific instructions.

A genuinely useful diagnostic distinction worth knowing if a smell persists: if a genuinely unpleasant smell survives both a fresh cabin filter and a proper clean of the vents, this points toward mould or trapped debris in the evaporator coil or its drain tube, rather than the filter being the ongoing cause.

It's also genuinely worth knowing a practical caution for DIY replacement: the plastic retaining tabs on the filter housing can become brittle and snap if forced, particularly in cold weather — worth taking your time and applying gentle, steady pressure.

Mazda CX-3 Cabin Air Filter: Easy to Forget, Easy to Fix

Of everything covered for the Mazda CX-3, 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.

Mazda CX-3 Cabin Air Filter: Watch: Replacing It

🎬 Watch: 2016 Mazda CX3 Cabin Air Filter Replacement

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Mazda CX-3 Cabin Air Filter reference plate

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.

Mazda CX-3 Cabin Air Filter: What It Does

On the Mazda CX-3, 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.

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Mazda CX-3 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 Mazda Cabin Air Filter

The same part, covered across other Mazda models.