Spark plug Bosch or BERU

I'd stick with the WR6DPO Bosch. Not sure why but they just work with no questions.

Bosch Plugs are tops in any application you use them for... All of their parts are worth what you pay for them...I've...\"NEVER\" had a Bosch part of any kind to fail at its applied usage...! True top of the line German Engineering... period...!!!!!!

I used Bosch plugs in mine about 3 months ago and I couldn't be happier.

Spark plug Bosch MB - $26 AUD each (part SPVA6SIP80)

Plugs are by BOSCH. Post this job, it runs a lot better, and I mean a loooot!

Had these Beru plugs put in last year. Are they the kind that’s at greater risk for damaging the engine?

Bought mine from rock auto; got the Bosch ones since the NGK’s are really only recommended if your car is tuned

definitely avoid Bosch spark plugs. I'm not personally a fan and I've seen plenty fail. Unless they were original in the motor (usually Subarus don't use Bosch), I'd stick with NGK or Denso in my opinion.

Bosch spark plugs are also trash.

Those spark plugs are junk, and on top of that, they are now carbon fouled. I would strongly encourage you to install new, normal, spark plugs.