Parts & Accessories Spare parts (In the name of God, the Most Gracious, the Most Merciful) Original ACDelco engine mounts. The mounts fit: Yukon, Tahoe, Sierra, Silverado, provided the engine is 5.3. The mounts are new and have not been exposed to the sun. I bought them to install them, but I sold the car and the mounts are still with me in storage. - The price is negotiable.