Denso is what I run and never a problem.
I've been running the NGK since I'm pretty sure they are the OE manufacturer. Subaru is charging crack prices for those coils.
I would get NGK, Denso or Motorcraft coils though, you don't want to cheap out on critical parts like this.
Truly you can’t get anything but the Denso coils. There’s no money buying and installing twice.
Have to use Denso coil packs. All the cheap ones are crap.
If you go to Autozone and open the box of their 2004-2005 coil pack, IF it has a "Denso" or "Made in Japan" sticker on the bottom, it's 100% OEM.
I have NGK coils and plugs on my B14NEH. No issues at all.
I installed ngk coils originally and they lasted the longest ( around 8k miles before the first one went ).
NGKs product quality has diminished but a brand new set of 6 in and 2 of the six aren't working after about 2 months
Don't buy unless it's Denso or Toyota I wasted $300 on fakes
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If choosing ignition coil across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare ignition coil across these categories:
In March 2026 on PartReview, ignition coil Denso were overall better than NGK.
In March 2026 on PartReview, ignition coil Denso were overall more popular than NGK.
By vote balance, ignition coil Denso surpassed NGK:
By number of reviews, ignition coil Denso surpassed NGK:
In March 2026, according to PartReview, ignition coil Denso led more car-specific ratings than NGK:
Denso are chosen by owners of cars such as: Honda Fit, Volkswagen Passat, and others.
NGK are chosen by owners of cars such as: Honda Civic, and others.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of ignition coil NGK with: Bosch, DELPHI, MSD, APR, HITACHI, OEM Volkswagen, BERU, Bremi, Duralast, OEM Audi.
Also available: comparisons of ignition coil Denso with: Bosch, DELPHI, MSD, APR, HITACHI, OEM Volkswagen, BERU, Bremi, Duralast, OEM Audi.
You can also see who is better among other ignition coil manufacturers: Bosch or Denso, Bosch or DELPHI, Bosch or MSD, Bosch or NGK, Bosch or APR.
