This GM 12691860 valve cover gasket is a top-quality replacement part for your Silverado Sierra 3500 HD 6.6L diesel engine. It is made of durable metal material and designed to fit perfectly in the engine compartment. The gasket has a black color and an uncoated (unfinished) finish. The pack contains one gasket with 10 or more bolt holes. It is an OE/OEM part number and is compatible only with specific vehicles. The gasket is made in the United States and is not a vintage part. It is not a universal fitment and is not suitable for performance parts. Representative item is shown. Genuine GM part, new without original packaging. No returns if installed. Made in USA. This item is a new, opened customer return. It has been inspected and passed quality control to insure the condition described and contents are accurate. Please review actual photos as stock photos are not the actual item, our photos are. You will ONLY receive exactly what is shown in photos, regardless of what might have originally been included. Please review our business policies in our store for information regarding returns, shipping and warranties.