Exhaust Manifold Air Port Plug Set For IH Engine- Set of 8
Specially machined to reduce exhaust port whistling when air injection rail ports have been removed.
Only one shown in picture. Your order is for Eight plugs.
Fits IH International Harvester 152, 196 4cyl and 266, 304, 345, 392 V8 Engines.
Q: Do the tubes inside the head need to be extracted before installing these? I didnt recieve any kind of instructions when I ordered these.
A: Yes, you will need to remove the thin air injection tubes in the head before installing the plugs.
