Bosch 047-090 90 Degree Fuel Injector Return Line Fitting (Leak Back "L" Fitting)

This is a brand new OEM fuel injector return line 90 degree "L" fitting. Often referred to as the leak-back L fitting, these will fit all 2004.5-2010 Duramax Diesel Engines (LLY, LBZ, & LMM). These 90 degree fittings can be found on both the driver and passenger side fuel injector return lines and often become brittle and break upon removal. Inspect your return line and return line fittings when doing any injector service.