Main bearing housing for the Jeep Liberty CRD.  There are three of these on the engine.  These housings prevent the crank from walking back and forth.  On higher mileage engines we are seeing these housings worn on the edges, allowing some play in the crankshaft alignment.  These should be replaced on high mileage enigines that are getting main bearing replacements.

Each housing uses 2 main bearing bolts, available.