Description
This oil pressure switch fits the Honda Acty Truck HA3, HA4 (1990-1999). It continuously monitors the engine oil pressure and triggers the red oil-can warning light on your dashboard if the pressure drops below a safe threshold.
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 oil pressure switch
- An oil light that stays on or never comes on
- A weeping or corroded switch
- A false low-pressure warning
Features & Function
- Signals the oil warning light
- Correct switch for the E07A
- Restores accurate oil-pressure warning
Installation Specifications
- Difficulty: Easy.
- Estimated time: about 20 to 30 minutes.
- Required tools: A wrench or switch socket and a rag.
Oiwa Garage Tech Note
"Confirm real oil pressure with a gauge before trusting the light - a false warning is often just this switch, but you want to be sure the pressure is actually fine."
Frequently Asked Questions
Is my low-oil-pressure warning real?
Verify with a mechanical gauge. If pressure is good and the switch is weeping or corroded, the switch is the fault.
How do I test the oil pressure switch?
Fit a mechanical gauge to confirm the engine actually has pressure. If the pressure is good but the warning light stays on or the switch weeps, the switch is the fault.
Where does the switch thread in?
It threads into the engine oil gallery. Confirm the style against the listing photos, and verify real pressure with a gauge before trusting the light.
Fitment verified by the Kei truck specialists at Oiwa Garage · Listing updated June 2026.