RAM 1500 Van V8-5.2L VIN Y (1999)
Crankshaft Main Bearing Seal: Description and Operation
CRANKSHAFT REAR OIL SEALS
The service seal is a two piece, Viton seal. The upper seal half can be installed with crankshaft removed from engine or with crankshaft installed.
When a new upper seal is installed, install a new lower seal. The lower seal half can be installed only with the rear main bearing cap removed.