Honda Acty Exhaust Parts — HA3, HA4 (1990-1999)
Give your Honda Acty a clean exhale, or a louder one. This collection covers the exhaust for the HA3 and HA4 truck built from 1990 to 1999 with the 656cc E07A engine, both the 2WD and the 4WD. On one side you have the stock system and the gaskets that seal it. On the other sits the Oiwa Growler, our own stainless steel exhaust. Exhaust fitment changed a little over the years, so check your chassis against the fitment on each product page before you order.
Oiwa Garage exclusive · Made in the USA
The Oiwa Growler Exhaust
Pull the stock exhaust off an Acty and you will be surprised how heavy it is: 50 pounds of steel, hanging off a truck with a 656cc engine. The Oiwa Growler weighs 4 pounds. That is 46 pounds gone from a vehicle where every pound counts. It is full stainless, built here in the United States. It hangs on the factory mounts, so it goes on in an afternoon with hand tools. Then you start it up. That is when the name makes sense.
Parts and when to replace them
How to find your Honda Acty chassis number and model code
Two Actys from the same year do not always take the same parts, so order by your chassis code, not the year. Your truck carries it in two places:
- Stamped in the frame. Open the driver-side wheel well and look at the bare body metal. The chassis code and serial number are stamped right into it, something like HA3-1234567 or HA4-1234567.
- On the ID plate. Look at the passenger footwell wall, just left of where your feet sit. A small metal plate is riveted there with your model code, serial number, and trim. The color changes from truck to truck, so go by where it sits, not what color it is. It is also where the Acty Van shows its HH3 code.
Where can I buy Honda Acty exhaust parts in the United States?
Right here at Oiwa Garage. We are based in the US and keep Honda Acty exhaust parts for the HA3 and HA4 in our California warehouse, so your order ships from here instead of waiting weeks on parts from Japan.
Our 100% Fitment Guarantee
Buying imported parts you cannot see in person is a gamble, so we take that off your plate. Text us your chassis code before you order, or leave it in the notes at checkout, and we will confirm every part fits your truck before it ships. If something arrives wrong, we exchange it or refund you in full. No hassle, no runaround.
Contact Our Fitment Specialistsor text us directly at 562-661-8862
Fitment verified by the Kei truck specialists at Oiwa Garage · Collection description updated July 2026.
