Parts for your 1993 Mitsubishi Pajero-Cabin filter

1993 Mitsubishi Pajero cabin filter — is it actually there?

For the 1993 Mitsubishi Pajero (second-generation V20 series), a cabin or pollen filter was not fitted from factory. Technical sources indicate the HVAC box in these models doesn’t include a filter tray or service cover, and no maintenance procedure exists for a cabin filter on this generation.

• Mitsubishi Motors ASA Electronic Parts Catalogue (V20-series Pajero/Montero, 1991–1999): Heater/aircon unit diagrams show no cabin/pollen filter element or access cover.
• Factory Workshop Manual for Pajero/Montero (early–mid 1990s, Heating & Air Conditioning sections): No service item or interval for a cabin/air conditioner filter is listed.
• Ryco Filters Australia fitment catalogue: No cabin filter application for Pajero 1991–1999, first listed Pajero cabin filter begins with later NM/NP models (circa 2000-on).
• MANN-FILTER catalogue: No cabin filter listing for Pajero V2_W up to the late 1990s.

Why wasn’t a cabin filter used? In the early ’90s, many 4x4s ran simple, free-breathing fresh-air HVAC systems without a filtration stage. The Pajero’s cowl intake and blower housing were designed without a filter slot, prioritising airflow, simplicity and easy serviceability. Back then, dust management was handled more by ventilation settings and periodic HVAC cleaning than by filter elements. Adding a filter would have reduced airflow and introduced a service item owners of the time weren’t expecting.

Owners keen on cleaner cabin air still have options. Some choose a retrofit solution: a custom frame and filter media placed at the blower inlet (typically behind the glovebox) or a mesh screen at the cowl intake. Any retrofit should be sized correctly, sealed well, and checked to ensure it doesn’t restrict airflow excessively or foul the blower wheel. If a filter is added, treat it like a regular service item—inspect every 10–15,000 km or 12 months, and replace sooner after dusty trips.

• Good habits without a factory filter:
  • Vacuum the blower fan and evaporator housing periodically, keep cowl drains clear.
  • Use recirculate on dusty roads to reduce ingress, switch back to fresh air to clear fogging.
  • Deodorise and sanitise the evaporator with an AC cleaner to tackle musty odours.
  • Keep door and hatch seals in good nick to minimise dust entry.

This approach keeps the ’93 Pajero’s HVAC breathing well while keeping dust and odours in check, even without a factory-fitted cabin filter.

Popular questions

Where would a cabin filter be on a 1993 Pajero?
On factory-spec vehicles, there isn’t one. If someone has retrofitted a filter, it’s most often mounted at the blower motor inlet behind the glovebox, or less commonly at the cowl intake under the windscreen panel. Look for an added access panel or custom frame.

Can a cabin filter be retrofitted to a 1993 Pajero?
Yes, with a purpose-made holder or a custom frame and suitable media. The key is ensuring the filter seals properly and doesn’t choke airflow. After fitting, check fan speeds and demist performance. If installed, service the filter roughly every 10–15,000 km or 12 months, and more often after off-road or outback travel.

How can dust and smells be reduced without a cabin filter?
Keep the cowl and plenum clean, vacuum the blower wheel and evaporator housing, and treat the evaporator with an AC sanitiser. Use recirc on dusty tracks, then switch to fresh air later to purge the cabin. Replacing tired door and hatch seals also helps keep dust at bay.