Description
This timing belt tensioner spring fits the Honda Acty Truck HA3, HA4 (1990-1999). It applies the load that keeps the timing belt tensioner pressed against the belt.
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.
Signs you need this timing belt tensioner spring
- A stretched or weak tensioner spring
- Belt tension that will not hold
- You are doing the timing belt and tensioner
Features & Function
- Loads the timing belt tensioner
- Correct rate for the Acty timing system
- Keeps the belt properly tensioned
Installation Specifications
- Difficulty: Advanced.
- Estimated time: about 2 to 4 hours with the belt.
- Required tools: A socket set and belt-timing tools.
Oiwa Garage Tech Note
"A tired spring lets the belt run loose even with a good tensioner pulley. Fit it with the belt job and confirm the tensioner moves freely."
Frequently Asked Questions
Do I need this with a new tensioner pulley?
If the spring is stretched or weak, yes - the pulley cannot hold tension without a good spring behind it.
How do I know the tensioner spring is weak?
If the belt runs loose even with a good tensioner pulley, or the spring is visibly stretched, it has lost its load. Compare its free length and tension to a known-good spring.
Can a tired spring make the timing belt skip?
Yes - if it cannot hold pressure on the belt, the belt goes slack and can jump a tooth, so it is replaced along with the belt.
Fitment verified by the Kei truck specialists at Oiwa Garage · Listing updated June 2026.