Are these Duralast coils any good?

[GMBoy]

My honest opinion of those Duralast coils is that they are just average. The are made for Duralast by Wells or SMP depending in application. That should tell you the 50/50 chance you take based on their quality reputation. I have installed plenty DL coild and had to warranty a few after as short as 3 months of service. Are they horrible? No. Are they top notch or OEM equivalent? No. Will they do the job as intended? - Yes but you never know for how long lol

 

[The Critic]

Interesting. I just tuned up a 2014 BMW M6 at 56k miles while it was here for CIC unit repairs (BMW lists 60k mile plug replacement). I used the same Bosch number as what came out of the car - Autozone stocked them and they appeared to be the exact plug by visual check except it didn't have the M logo - but same everything else even the engraved part numbers were identical. Car runs great -are you saying these plugs were not acceptable to use because I've used them in the last 10-15 BMW's I have serviced so I don't want a bunch of comebacks.

I’ll send you a PM with more details.