Description
This oil cap fits the Honda Acty Truck HA1, HA2, HA3, HA4 (1980-1999). It seals the valve-cover oil filler opening and adds a finished look.
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 oil cap
- A worn or leaking original cap
- A dress-up upgrade for the engine bay
- A missing cap
Features & Function
- Seals the oil filler neck
- Correct thread or seal for the Acty valve cover
- Dresses up the engine
Installation Specifications
- Difficulty: Easy.
- Estimated time: a minute or two.
- Required tools: No tools.
Oiwa Garage Tech Note
"Check the cap seal seats cleanly - a poor seal weeps oil onto the valve cover and burns off with a smell."
Frequently Asked Questions
Does it seal against oil leaks?
Fitted with a good seal it closes the filler neck cleanly. Confirm the style matches your valve cover in the photos.
How do I know my oil cap seal is worn?
A hard, glazed cap seal or oil weeping at the filler neck means the seal is done. A fresh cap closes the neck without a smell of burning oil.
Fitment verified by the Kei truck specialists at Oiwa Garage · Listing updated June 2026.