Ford C-Max Cabin Air Filter: Intervals, Fitment & Warning Signs

A real disinfectant trick clears a musty smell from the whole duct network — worth doing alongside a fresh filter, not instead of one.

Illustration for editorial purposes

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Ford C-Max Cabin Air Filter: OEM Part Number

Standard particulate filter	Ford OEM/Motorcraft: AV6N-19G244-AA — shared with same-era Focus Mk3
Activated-carbon "odour filter" upgrade	A genuinely different part with an added carbon layer for exhaust/odour filtering, same fitment as the standard filter

Accuracy note: genuinely worth knowing: right-hand-drive and left-hand-drive C-Maxs sometimes use differently shaped filter housings, since the filter usually sits near the passenger footwell — worth double-checking against your own market's spec rather than a generic international listing.

A Genuinely Useful Tip If a Musty Smell Persists — Ford C-Max Cabin Air Filter

If you're changing the filter specifically because of a musty smell, it's worth going one step further: after fitting the new filter, spray a can of disinfectant (a household product like Dettol works well) into the intake vents, then run the fans on full with heat at maximum in recirculation mode for several minutes with windows and doors closed. This helps sterilise mould and mildew that can build up through the entire duct network and heater box, not just the filter itself — simply replacing the filter alone doesn't always fully resolve a persistent musty smell if the ductwork itself has mildew growth. Leaving the air conditioning running periodically rather than switching it off entirely also helps keep the system dry and less prone to this in the first place.

Ford C-Max Cabin Air Filter: Easy to Forget, Easy to Fix

Skipping this one on a Ford C-Max won't cost you performance or reliability, only air quality inside the cabin — which is why it's routinely the most overdue item on any used car's maintenance history.

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.

Ford C-Max Cabin Air Filter reference plate

Ford C-Max Cabin Air Filter: What It Does

Two filters get mixed up constantly on the Ford C-Max: this one cleans air for the cabin ventilation system, catching dust, pollen and (on activated-carbon versions) some airborne pollutants, while the separate engine air filter deals purely with combustion air. They don't share a part number or a purpose.

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Ford C-Max 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 Ford Cabin Air Filter

The same part, covered across other Ford models.