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4.9 from 479+ Product Reviews | US-Based Kei Truck Parts Specialists
This Spark Plugs fits the Daihatsu Hijet S100C, S100CT, S100P, S100V, S100, S110C, S110CT, S110P, S110V, S110W (12/1995-12/1996) with the EF-GS (EFGS) engine. It delivers the spark that lights the mixture for a clean, strong burn.
In Stock - ships from our California (USA) warehouse
Fast, reliable delivery - no overseas backorder wait.
Confirm your engine before you order
This part is engine-specific and fits the EF-GS (EFGS) engine only. Before ordering, find your VIN / data plate in the engine bay and confirm the line marked ENGINE reads EF-GS (EFGS). The photo below shows where to look.
Example plate shown is an EF-NS engine (chassis S100P, 659cc). Yours shows your own code on the same ENGINE line - for this part it must read EF-GS (EFGS).
Vehicle Fitment & Compatibility
The Hijet ran several engines in this era. Confirm your engine code on the VIN plate above, not just the chassis, against the table below.
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 Hijet, we exchange it or refund you in full.
Signs you need this spark plugs
Hard starting or a rough, uneven idle
A miss or stumble under load
Worn, fouled, or wrong-heat-range plugs
Lost power and economy
Features & Function
Correct heat range and reach for the Hijet engine
Sharp electrode for an easy, consistent spark
A full matched set for even running
Installation Specifications
Difficulty: Easy.
Estimated time: about 30 to 45 minutes.
Required tools: Spark plug socket, gap gauge, ratchet and extension.
Oiwa Garage Tech Note
"Gap every plug to the factory spec before fitting and anti-seize the threads lightly - never assume they come pre-gapped."
Frequently Asked Questions
How do I know if I have the EF-GS (EFGS) engine?
Check the VIN / data plate in the engine bay - the line marked ENGINE shows your code (the example plate above reads EF-NS; yours must read EF-GS (EFGS)). This part fits the EF-GS (EFGS) engine only, so confirm the code before ordering.
How many plugs do I need for my Hijet?
Three - these are three-cylinder engines, one plug per cylinder.
Can I fit a different brand of plug?
Yes - as long as you match the correct heat range, reach, and gap for your Hijet engine. Gap them before fitting.
What gap do these need?
Gap to the factory spec before fitting - do not assume they come pre-gapped.
Fitment verified by the Kei truck specialists at Oiwa Garage · Listing updated June 2026.
It's pretty straight forward. The hardest part is getting the airbag wiring off the airbag. Mine was pinned on? I had to cut the plug off my airbag and then break it apart so I could use the horn plug(could probably cut that off-(since i cut it off the airbag anyway, I didn't do that). The ceramic nuggets plug into the airbag relay to shut the light off. Tape that in and plug it back in. All that fits underneath the adapter. It's fiddly but easy. The horn plugs into one of those weird rings.
Driving two vehicles. 1989 Landcruiser and 1995 Honda ACTy. Keep an eye for any parts I might need in the future. My Landcruiser parts spreadsheet is three pages long. With Oiwa Garage’s vast parts inventory I hope to be able to do the same for my ACTy.
