F7TZ-9D477-AA OE Exhaust Back Pressure, EBP, Tube.
For 1997.5 Ford 7.3L Powerstroke
The 2007 EBP tube is a split year, this part fits after engine serial# 544521, AFTER 5/12/97.If your truck is below engine serial# 544521, BEFORE 5/12/97, order part number F4TZ-9D477-A.