Alliant AP0133 Fuel Injector Return Line Seal Kit 17-21 GM 6.6L Duramax L5P SB-80-1001L P/N: RH-2872 would be the

P/N: RH-2872 would be the correct box for your truck

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Alliant AP0133 Fuel Injector Return Line Seal Kit 17-21 GM 6.6L Duramax L5P SB-80-1001L P/N: RH-2872 would be theIn the L5P Duramax, each injector bank has a rigid fuel return line that must be removed to access the fuel injectors. Ensuring the return line is sealed properly is a must. This seal kit from Alliant Power provides a factory like seal, and is a massive cost saving alternative to replacing the entire line. Reseal your injectors like a pro with this return line seal kit from Alliant. Each kit will service one bank of injectors. Order 2 kits for a