This genuine Ford OEM EGR valve housing seal (part number 8C3Z-9J559-A) fits 2008-2010 Ford F-250, F-350, F-450, and F-550 Super Duty trucks with the 6.4L Power Stroke turbo-diesel engine. On the 6.4L Power Stroke, the EGR system operates under high heat and pressure with heavy soot loading, so the sealing surface at the valve housing is a known service point.
