High Quality Replacement for the Banjo Bolts in your 2001-2004 GM 6.6L Duramax LB7. During disassembly, the return line bolts are frequently damaged or stripped which can lead to fuel leaks or issues during reassembly. Replacing these bolts is a great way to avoid potential leaks when installing new injectors in your truck. This banjo bolt kit includes brand new bolts that are manufactured to meet the factory specifications.