Genuine Dodge Ram 5.9L Cummins Rear Main Seal Housing Plate 3967200Condition: USED REBUILDABLE CORE The Cummins 3967200 Rear Main Seal Housing is a crucial component for 5. 9L and 6. 7L Dodge Ram diesel engines. This housing often referred to as a rear flywheel housing cover serves to protect and secure the rear main seal preventing oil leaks and ensuring engine longevity. Found in models ranging from 2003 to 2013 this part is engineered to fit seamlessly and provide reliable performance under heavy duty conditions.