Duramax Fuel System Components

Do you have an engine lope at idle or surging while driving? Are you seeing unusual rail pressure fluctuations? Your LBZ Inlet Metering Valve may be the root cause.    Also known as the FCA (fuel control actuator) or the MPROP, this component can...

Do your original LB7 fuel injector lines have rust and corrosion build up where they meet the injector nuts? Are the sealing surfaces showing damage?   Replacing the fuel injector lines is highly recommended when changing the LB7 fuel injectors. The original lines can...

Did you break the connector on your LB7 fuel rail pressure sensor while doing an intake? Are you seeing intermittent rail pressure fluctuations that are causing running issues? The rail pressure sensor may be the root cause.   The fuel pressure sensor is a...

Are you replacing the fuel injectors or have them out for a refresh and don't want to reuse the original return line gaskets? You are making the right choice. The last thing you want is for one of your original return gaskets to start...

Do you have an engine lope at idle or surging while driving? Are you seeing unusual rail pressure fluctuations? Your LLY Inlet Metering Valve may be the root cause.    Also known as the FCA (fuel control actuator) or the MPROP, this component can...

Are you seeing intermittent rail pressure fluctuations that are causing running issues? The rail pressure sensor may be the root cause.   The fuel pressure sensor is a crucial part of the high pressure fuel system. It effectively measures fuel pressure allowing for proper...

Does your original LLY fuel injector lines have rust or corrosion build up. Are the sealing surfaces showing damage? Are you questioning if they will even clean up? We certainly would. Replacing the fuel injector lines is highly recommended when changing the LLY fuel...

Does your original LLY fuel injector lines have rust or corrosion build up. Are the sealing surfaces showing damage? Are you questioning if they will even clean up? We certainly would. Replacing the fuel injector lines is highly recommended when changing the LLY fuel...

Are you seeing intermittent rail pressure fluctuations that are causing running issues? The rail pressure sensor may be the root cause.   The fuel pressure sensor is a crucial part of the high pressure fuel system. It effectively measures fuel pressure allowing for proper...

Are you seeing intermittent rail pressure fluctuations that are causing running issues? The rail pressure sensor may be the root cause.   The fuel pressure sensor is a crucial part of the high pressure fuel system. It effectively measures fuel pressure allowing for proper...

Are you seeing intermittent rail pressure fluctuations that are causing running issues? The rail pressure sensor may be the root cause.   The fuel pressure sensor is a crucial part of the high pressure fuel system. It effectively measures fuel pressure allowing for proper...