So new Bosch plugs and red-top coils seemed worth the $109. Old spark plugs were pretty crusty, which made me feel better about doing it.
FWIW, if you don't have Bosch, BERU, Bremi, or NGK plugs/coils and have store brand stuff, I stop diagnostic work until you get OE grade stuff put in there. BMW's don't like the Zone/ebay for ignition parts in my experience.
Since then I have take good care of it, replaced the brakes on schedule in August 2020 and then in August 2021 new spark plugs.
Yeah can go wrong with acdelco. I run Bosch in my 93 4.3
I've run Bosch iridium's in all my vehicles (boosted and daily). No gapping needed.
Bosch should be the safest choice for German cars, but avoid their gimmicky "Plus 4" plugs that have 4 ground electrodes, unless that's what the car came with from the factory.
But otherwise, Bosch FLR8LDCU+.
I did not have good experiences with Bosch on another vehicle.
I have solved so many drivability problems taking Bosch plugs out of misfiring engines.
In my experience, Bosch spark plugs are always terrible; fouling out within a month, that kind of thing...
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