Definitely OEM, and look like brand new.
Perfect fit, no seal leakages (60 psi).
Smooth idling, less exhaust smell. Have yet to check MPG, but after ~50 mi already looks like some improvement.
They look great but I haven't actually installed them yet
I can't give a full review here because I didn't actually need to install these injectors (cleaning the old ones was sufficient). However, they look like they're in great shape and appear identical to the OEM injectors that were currently in the vehicle. I will keep them on hand for a time when I truly need to replace the old ones. The incredibly low price (combined these 6 injectors cost about what 1 OEM new injector would cost from a dealer) made it worth the risk to purchase before being sure I needed them.