The XDP Fuel Return Line Banjo Bolt Kit (Set of 8) XD476 is a 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 cause fuel leaks or issues during reassembly. Replacing these bolts is a great way to avoid potential leaks when installing injectors in your truck. This banjo bolt kit includes brand new bolts that are manufactured to meet or exceed the factory specifications.