The patented STAB Motorsports 6.0 EGR Valve designed by factory trained diesel technicians is the only carbon solution valve available. A favorite among first response vehicles equipped with the 6.0 Powerstroke. This valve will never leave a unit stranded due to carbon deposits sticking the valve open. Only the check engine light will come on if the air flow is restricted allowing the unit to finish the task and be fixed after the run is over. CARB Certification D-730 Fits 03-07 Ford E and F series trucks and vans with 6.0 Powerstroke.