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403+ Five-Star Reviews | US-Based Kei Truck Parts Specialists
This valve stem seal kit fits the Honda Acty Truck HA3, HA4 (1990-1999). It seals the valve stems so oil does not draw down the guides into the combustion chamber.
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.
Honda Acty Truck HA3, HA4 (1990-1999) - fitment
Make
Honda
Model
Acty Truck
Chassis Codes
HA3, HA4
Years
1990-1999
Part Type
valve stem seal kit
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 valve stem seal kit
Blue smoke on startup or throttle tip-in
Oil use with no external leak
You are doing head or valve work
Fouled plugs from oil burning
Features & Function
Seals the valve stems against oil draw
Correct fit for the E07A head
Reduces oil burning and smoke
Installation Specifications
Difficulty: Advanced.
Estimated time: part of a head or valve job.
Required tools: A valve spring compressor and engine hand tools.
Oiwa Garage Tech Note
"You need to compress the springs to reach the seals, so this is head-off or specialist head-on work. Match the intake or exhaust side called out in the title."
Frequently Asked Questions
How do I know my valve stem seals are worn?
Watch the exhaust on a cold start or when you lift off and get back on the throttle - a puff of blue smoke with no external oil leak points to worn stem seals drawing oil down the guides.
Do I have to pull the head to fit these?
No - you can replace valve stem seals with the head on using a spring compressor and air to hold the valves up, but it is careful, patient work.
Should I replace this if it is not leaking yet?
If you already have the area apart for other work, fit a fresh one while the labor is done. Otherwise replace it once it weeps.
Fitment verified by the Kei truck specialists at Oiwa Garage · Listing updated June 2026.
I needed an exhaust replacement for the 1995 Subaru Sambar. Received the part within a few days from OIWA and used the video on to remove the old exhaust and install the new one. It is loud, but there is a slight improvement in the hp. I found this a good option and appreciate OIWA for making this product.
Not only was it a perfect fit and got my car running again, but during the process of removing it i had broken a piece and was able to send them a text where they responded with a link to order that part. Price may seem high to some of you guys but it is well worth it, it shipped fast and is also the only place to get one without importing.
Nice, high quality exhaust. I like it quite a lot overall. Install was quick and easy, bolted right in, and I was pleasantly surprised that it included a new flange gasket. It's a bit louder than expected, but the sound is good.