The XDP Tappet Cover Bolt Kit (For OEM Tappet Cover) XD620 will replace the old and corroded bolts on your 1989-2002 Dodge 5.9L Diesel. This kit features (6) Class 10.9 steel bolts that feature an ultra-durable Black-Phosphate coating.The flange on these bolts distributes pressure where they meet the mounting surface, removing the need for a separate washer.Flanged Hex Head Class 10.9 Steel ScrewBlack-Phosphate Coating