Ensure the proper sealing of the engine with our Engine Rear Main Seal Cover. The Seal Cover is designed from high-quality materials to stop and prevent engine oil leakage. Product Features:SPECIAL TOOL REQUIRED FOR INSTALLATION- GM alignment tool J414792B or Dorman 635-000 (or equivalent) is required to properly install cover assembly. Failure to use the correct tool and installation procedures will result in seal leaks.Comes with bolts and gaskets - everything necessary for a complete repairConstructed from aluminum for long-lasting performanceDirect replacement for a proper fitRigorous quality control measures have been undertaken to ensure that this part conforms to product standards