LML High Pressure Injector Line Kit, 8 Lines | 2011-2016

The Merchant Automotive High Pressure Fuel Injector Line Kit is a complete set of 8 rail-to-injector lines for 2011-2016 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks with the LML 6.6L Duramax diesel. These lines carry high-pressure fuel from the fuel rails to each injector, and they are built to meet or exceed OE specifications for proper fit and performance. We recommend new lines whenever you replace the injectors and the old lines show signs of corrosion or rust. This keeps debris from being pushed into your new injectors. Injector lines are also often replaced as part of a CP4 failure cleanup.

Features

• Direct fit replacement
• Complete set of 8 high-pressure injector lines (2 each for cylinders 1/8, 2/7, 3/6 and 4/5)
• Replaces GM 12670468, 12670460, 12670469 and 12670471
• Built to meet or exceed OE specifications for fit and performance
• Connects the fuel rails to the injectors
• Fits 2011-2016 LML 6.6L Duramax

What's Included

• (8) High-pressure fuel injector lines, 2011-2016 LML

Why Replace Them

• Protects new injectors from rust and debris shed by old, corroded lines
• Stops high-pressure fuel leaks at worn or damaged line ends
• One kit replaces every injector line, so there's no need to order cylinder by cylinder

Installation Tips

• Replace the lines at the same time as the injectors if the old lines show any corrosion or rust.
• Keep the line ends clean and capped until installation so no debris enters the injectors.
• Match each line to its cylinder pair: 1/8, 2/7, 3/6 and 4/5.
• Prime the fuel system and check every line end for leaks before driving.

Related Parts

• LML Injector Body Seal Kit, 8 Pack
• LML Injector Fuel Return Line Seal, 8 Pack
• Fuel Injector Removal Tool Kit, LML
• Fuel Injector, LML Duramax
• S&S Diesel Motorsports Fuel Injector, LML

Frequently Asked Questions

Can I buy just one line?
Yes. See the Cylinders 1 and 8, Cylinders 2 and 7, Cylinders 3 and 6 and Cylinders 4 and 5 injector lines.

Should I replace the lines when I replace my injectors?
We recommend it if the old lines show signs of corrosion or rust. This keeps debris from being pushed into your new injectors. When doing injectors, also add the LML Injector Body Seal 8-Pack and LML Injector Fuel Return Line Seal 8-Pack.

Should I replace the lines after a CP4 pump failure?
Injector lines are often replaced as part of a CP4 failure cleanup. Ask your installer what your truck needs.

Will this kit fit other Duramax years?
No. It fits the 2011-2016 LML only. For 2007.5-2010 LMM trucks, see the LMM Fuel Injector Line Kit. For 2017 and newer L5P trucks, see the L5P Fuel Injector Line Kit.

For warranty information or to submit a claim, see our Warranty Form.