Nothing finishes off the look for your Heavy Duty 2003-07 6.0L Ford Powerstroke like Mag-Hytec front and rear differential covers.  In addition to great looks, the increased fluid capacity of these covers helps keep your differentials cool even under the toughest conditions.  The part number for the front cover is MHDANA60-FF and the part number for the rear is either MHDANA80F or MHF12-10.25.  The MHDANA80F only fits the rear differetials on dually trucks.  All single axle trucks take the MHF12-10.25.  If you are unsure of which rearend you have send the last 8 numbers of your vin (vehicle identification number) to cs@DieselPowerProducts.com and we'll handle it for you