This is a brand new Injection Fuel Line for 2001-2004 GM LB7 Duramax Diesels. The fuel lines on the engine are often contaminated with rust and debris, and is recommended the fuel lines are to be changed when replacing injectors.

This is a brand new Injection Fuel Line for 2001-2004 GM LB7 Duramax Diesels. The fuel lines on the engine are often contaminated with rust and debris, and is recommended the fuel lines are to be changed when replacing injectors.

This is a brand new Injection Fuel Line for 2001-2004 GM LB7 Duramax Diesels. The fuel lines on the engine are often contaminated with rust and debris, and is recommended the fuel lines are to be changed when replacing injectors.

This is a brand new Injection Fuel Line for 2001-2004 GM LB7 Duramax Diesels. The fuel lines on the engine are often contaminated with rust and debris, and is recommended the fuel lines are to be changed when replacing injectors.

This is a brand new Injector Return Line Kit for 2001-2004 GM LB7 Duramax Diesels.

This is a New Injector Fuel Sleeve for the 6.6L LB7 Duramax Diesel. Damaged or cracked injector sleeves can cause combustions leaks that can damage the engine.

This is a brand new Injection Fuel Line for 2004.5-2005 GM LLY Duramax Diesels. The fuel lines on the engine are often contaminated with rust and debris, and is recommended the fuel lines are to be changed when replacing injectors.

This is a brand new Injection Fuel Line for 2004.5-2005 GM LLY Duramax Diesels. The fuel lines on the engine are often contaminated with rust and debris, and is recommended the fuel lines are to be changed when replacing injectors.

This is a brand new Injection Fuel Line for 2004.5-2005 GM LLY Duramax Diesels. The fuel lines on the engine are often contaminated with rust and debris, and is recommended the fuel lines are to be changed when replacing injectors.

This is a brand new Injection Fuel Line for 2004.5-2005 GM LLY Duramax Diesels. The fuel lines on the engine are often contaminated with rust and debris, and is recommended the fuel lines are to be changed when replacing injectors.

This is a new fuel pressure regulator for common rail fuel injection pumps. These are also known as MPROP's. The symptoms of a faulty MPROP would be rail pressure that is too high or too low.The MPROP will often fail before the pump does, getting stuck and causing the symptoms mentioned above.