AC Filter - Honda Acty Truck HA3, HA4 Models - 1990-1999

This A/C filter fits the Honda Acty Truck HA3, HA4 (1990-1999). It cleans the air entering the cabin through the heater and A/C box.

Vehicle Fitment & Compatibility

Confirm your chassis code against the table below before ordering.

Signs you need this A/C filter

• Weak airflow from the vents
• Musty or dusty smell when the fan runs
• Visible debris in the filter
• You have never changed it on a used import

Features & Function

• Cleans incoming cabin air
• Restores vent airflow
• Simple, low-cost cabin maintenance

Installation Specifications

• Difficulty: Easy.
• Estimated time: about 10 to 20 minutes.
• Required tools: Usually no tools, sometimes a screwdriver.

Frequently Asked Questions

How do I know if my truck has a filter slot?

Check the listing photos and your heater box; if a slot is present, this element drops in. If you are unsure, contact Oiwa Garage before ordering.

How do I know the A/C filter is clogged?

Run the fan on high; weak airflow from clean vents usually means a blocked filter. Pull it and inspect for dust and debris - if it is dirty, replace it.

Does my truck even have a filter slot?

This A/C filter only fits trucks that actually have A/C. The catch is that every Acty climate panel shows red for heat and blue for cold even on trucks without A/C, so people assume they have it when they do not. You only have A/C if there is a separate square button you push in to engage it - that is the truck this filter is for.

Fitment verified by the Kei truck specialists at Oiwa Garage · Listing updated June 2026.