97188722 OE High Pressure Fuel Injector Line, Cylinders 4 and 5
For 2001, 2002, 2003, 2004 GM 6.6L Duramax LB7
Cylinder number 4 is the second cylinder back on the drivers side of the engine. Cylinder number 5 is the third cylinder back on the passenger side of the engine. This line services both positions.