Spark plug Bosch or BRISK

at 100k km, I replaced (all Bosch) Plugs , Coils, starter, battery, voltage regulator (40).

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.

Yeah can go wrong with acdelco. I run Bosch in my 93 4.3

I just did mine not too long ago, replaced with Brisk ER12S. Didn’t need a coil puller tool, just had to be careful getting them out. Warming up the engine is helpful too. Otherwise an easy job.

i might switch out the plugs again because my buddy got me some freebie bosch plat 4 and i wanna put the bosch single silvers in.

So far we have; Changed to new spark plug wires, distributor cap and rotor and the distributor is not leaking oil, tried two different sets of spark plugs Bosch F6DTC and NGK/RIDIUM BKR6EIX.

Bosch is making crappy plugs these days.

Put the correct spark plugs in there (NGK BKUR6ET-10 for AEG), throw those Bosch +4 turds in the bin where they belong.

Bought Bosch platinum's and red bremi wires. swap everything all out, the misfires alot worse.