Description
This gas cap fits the Honda Acty Truck HA1, HA2, HA3, HA4 (1986-1999). It seals the fuel filler and keeps dirt and water out of the tank.
In Stock - ships from our California (USA) warehouse
Fast, reliable delivery - no overseas backorder wait.
Vehicle Fitment & Compatibility
Confirm your chassis code against the table below before ordering.
100% Fitment Guarantee
Not sure about fit? Add your chassis/VIN number at checkout and we confirm it before we ship. If a part does not fit your Acty, we exchange it or refund you in full.
Reasons to choose this gas cap
- A lost, cracked, or poorly sealing original cap
- A cap that will not click or hold
- You want a dress-up cap for the filler
Features & Function
- Seals the fuel filler neck
- Keeps water and grit out of the tank
- Correct fit for the Acty filler
Installation Specifications
- Difficulty: Easy.
- Estimated time: a couple of minutes.
- Required tools: No tools.
Oiwa Garage Tech Note
"A cap that does not seal lets condensation into the tank, which is how these trucks grow rust and clog the fuel filter. A proper seal matters."
Frequently Asked Questions
Will this seal my tank properly?
It is sized for the Acty filler neck; make sure it seats and holds before relying on it. Check the listing photos for the style.
How do I know my gas cap is not sealing?
If the cap will not click or hold, or you get condensation and rust in the tank and a clogging fuel filter, the seal has failed. A proper seal keeps water out of the tank.
Fitment verified by the Kei truck specialists at Oiwa Garage · Listing updated June 2026.