Mitsubishi Mirage Cabin Air Filter: Intervals, Fitment & Warning Signs

On the Mirage, a musty smell that genuinely survives a fresh filter often points toward mould on the evaporator itself, not the filter.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — cabin air filter (aftermarket) Mann CU23000-2 / Mahle LA636

Accuracy note: Covers the Mitsubishi Mirage (2012-) 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)	Mann CU23000-2, Mahle LA636, Bosch 1987435096, Febi 184364
Activated-carbon version (aftermarket)	Mahle LAK 636, Corteco 80004701
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: some Mirage variants use a two-piece cabin filter set rather than a single filter, particularly where the car has separate driver/passenger climate zones — ordering just one filter when two are needed is a common mistake.

Mitsubishi Mirage Cabin Air Filter: Easy to Forget, Easy to Fix

This is one of the few parts on the Mitsubishi Mirage that has zero effect on how the car actually drives — its whole job is air quality inside the cabin, which is exactly why it's so easy to let slide for years.

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.

Mitsubishi Mirage Cabin Air Filter: What It Does

Air entering the Mitsubishi Mirage's ventilation system passes through the cabin filter first, which traps dust and pollen, and on activated-carbon versions, some airborne odours too. It's entirely separate from the engine air filter — a different part doing a different job for the combustion process, not the cabin.

Mitsubishi Mirage Cabin Air Filter: Watch: Replacing It

🎬 Watch: 14-22 Mitsubishi Mirage cabin air filter replacement

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Mitsubishi Mirage Cabin Air Filter reference plate

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A Genuinely Useful Diagnostic Distinction Worth Knowing — Mitsubishi Mirage Cabin Air Filter

If a musty smell survives fitting a fresh cabin filter, this is genuinely worth knowing: this often points toward mould on the evaporator itself rather than the filter, which a relatively cheap aerosol treatment can usually resolve rather than needing another filter change. A soaked, waterlogged filter, on the other hand, specifically indicates the scuttle panel or door seals are letting water past — worth finding and fixing this actual leak before the cabin carpet becomes a permanent, ongoing problem.

Worth knowing that dust bypassing a clogged or poorly-fitted filter can shorten the blower motor's life: that said, a blower motor going noisy or losing its top speed after years of use is more likely down to worn bearings or a failing resistor than the filter itself — worth having this checked separately if a fresh filter doesn't resolve reduced airflow.

It's also genuinely worth knowing that on related Mitsubishi models used in dusty or off-road conditions, the filter can block well ahead of the standard mileage-based interval, worth checking more frequently if your typical use is genuinely dusty rather than sticking rigidly to a schedule intended for normal road use.

Mitsubishi Mirage 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 Mitsubishi Cabin Air Filter

The same part, covered across other Mitsubishi models.