Ram 1500 Rear Differential Pinion Flange Dorman 697-020

This is Dorman 697-020, a rear differential pinion flange for the Ram 1500. It replaces Mopar part numbers 68056356AA, 52105064AC and 6507901AA, and cross-references 3507678. It is the flange style companion flange that the rear driveshaft bolts to, not a U-joint end yoke.

Listed fitment: 2011-2024 Ram 1500 and 2019-2024 Ram 1500 Classic. Ram used different rear axles and driveshafts across these years, so match the part number on your old flange or run your VIN before ordering.

Why it gets replaced: the seal surface on the flange rusts and pits, and a pitted surface tears up a new pinion seal fast. That is the usual reason a Ram keeps leaking gear oil at the pinion after a seal job. Worn splines or a bent flange from an off-road hit also cause driveline clunk and vibration. The Dorman package shown includes a pinion seal and nut.

On the bench: mark the driveshaft to the flange, unbolt and support the shaft, and measure pinion turning torque before you touch the nut. Pull the flange with a puller. Put in the new seal, lube the seal surface and splines, draw the new flange on with the nut, and bring turning torque back to where it was. Do not hammer the flange on, since that can damage the pinion bearings.