Exhaust Assembly - Honda Acty Truck HA3, HA4 Models - 1990-1999

This exhaust assembly fits the Honda Acty Truck HA3, HA4 (1990-1999). It carries exhaust gas from the engine out the back and quiets it.

Vehicle Fitment & Compatibility

Confirm your chassis code against the table below before ordering.

Signs you need this exhaust assembly

• A loud or blowing exhaust
• Rust holes or a rotted section
• A dragging or broken pipe or muffler
• A leak that drones in the cab

Features & Function

• Carries and quiets exhaust gas
• Correct fit for the Acty exhaust path
• Restores a sealed, quiet exhaust

Installation Specifications

• Difficulty: Moderate.
• Estimated time: about 1.5 to 2.5 hours.
• Required tools: A socket set, penetrating oil, and a jack and stands.

Frequently Asked Questions

How do I find an exhaust leak?

Listen for a loud or blowing note that changes with revs and feel along the pipe for escaping gas with the engine cold at idle. Rust holes and a rotted section are the usual causes.

Will a fresh exhaust quiet the drone?

If the noise is a blown pipe or a rotted joint, a new assembly with fresh gaskets brings back the stock, quiet note - a rattling heat shield is a separate fix.

Do I need new gaskets and hangers?

Renew the joint gaskets and rubber hangers when you fit the exhaust either way - they are cheap, and worn ones leak or let it rattle.

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