Buy once, cry once, install once.
Word seems to be getting out that replacement parts have really bad quality problems (features?). I follow a repair shop on YT and the owner recently trashed some parts by brand name.
Personally for me, Dorman stuff has gotten really bad. Lots of members here have bad Moog stories.

btw
Timing chains seem to do better if you immerse the set in a pan of 30w and heat to 250-300 or so for an hour or 2, then let cool.