Does anyone know how reliable they are? Are they identical to the original ones, or low-grade pattern parts?
I've gone through a few (part of their top head sets) and I was under the impression that they were original Opel items, just sourced from elsewhere.
Now I've looked closely and there are splits, even after a single use. Surely they shouldn't split if they are torqued properly, not after a couple of months' worth of use?
I had an older one, also with minimal use on the car, as a spare. Looking closely it too has a small split - making it unusable.
Anybody else with similar experience?