5S3903 Seal Oil Fits Caterpillar model-71191 connecting the dipper arm to

connecting the dipper arm to the bucket for proper articulation during digging operations

Spline Count 13

D14 - Serial Number 19001 and up

AH (Highcrop only SN 665000 and up)

Replaces Part Number: D72337

5S3903 Seal Oil Fits Caterpillar model-71191 connecting the dipper arm toOne New Aftermarket Replacement Rear Crankshaft Oil Seal Fits Caterpillar (Fits CAT) D343 1693 Engine This aftermarket replacement rear crankshaft oil seal Fits Caterpillar equipment powered by the D343 and 1693 engine family. The rear crankshaft seal prevents oil from escaping the back of the engine block at the crankshaft exit point, keeping oil in and contaminants out. A worn or hardened rear crank seal is a common cause of rear main oil leaks on