Part record

6.0L Power Stroke EGR Cooler, round-style upgraded (Bullet Proof Diesel)

Round-style: MY2003 6.0L (mid-2003 '2003.5' launch) plus a small early-MY2004 build window (engines built before ~2003-09-22). Ford equivalent: 3C3Z-9P456-B (round). NOT interchangeable with the square cooler (NT-EGRC-1 / 4C3Z-9P456-AC family) - the square body is longer (21.5in vs 18in) and the intake-manifold support-bolt locations differ. Some sellers title this cooler '2003-2004.5'; the build-date break (~2003-09-22), not the model year, decides. E-Series never used the round cooler.