Aye, Boeing calls this the Krueger flap deflector:
Purpose
The krueger flap deflector keeps separation between the
inboard leading edge (krueger) flap and the inboard thrust
reverser outer skin during these conditions:
* The inboard leading edge flap in the extend position
* Anytime the T/R is out of the stow position.
The fairing gives an aerodynamic surface for airflow around the
top of the thrust reverser.
Location
The krueger flap deflector is on the inboard T/R half of each
engine. The deflector is near the top of the T/R half. Bolts on the
inside of the translating sleeve hold the deflector in position.
You move the translating sleeve aft to get access to these bolts.
The fairing is just aft of the deflector. Bolts attach the fairing to
the T/R half structure.
The classics have it too, guess they didn't change the Kruegers much from the originals with its JT8D.