If you are replacing your injectors on your LB7 it is highly recommended to replace the valve cover bolts because it is so easy to strip the bolts. Over time it is very common for the OEM bolts to corrode and make it difficult to remove.

This is a complete set of valve cover bolts, both upper and lower, for your LB7 Duramax. Replace the stock bolts with these to make your truck easier to service and less prone to damage.