Poly mounts are garbage, inherent in the design.
They slide apart.
The two metal sides within the poly that don't touch are vertical, so when the engine torques they slide apart.
Went through a few sets under warranty, built heat shields, chain on engine, etc. They're just designed wrong.
Check them if you got them, because you won't know unless you do.
I knew because my engine pokes through the hood.
Pic is driver's side, nowhere near headers or heat.
View attachment 1715503569