Shop LinesToGo for your 2003 Yukon/Yukon XL fuel lines. The FL149-D4D set of fuel lines are perfect for all Yukon 1500/Yukon XL 1500, 4 door vehicles with a 6.0L engine and non flex fuel

Nylon Lines Between Fuel Lines and Fuel Tank:

Nylon lines between the fuel line and the fuel tank are not included. We do not make the nylon lines for this vehicle. However, you can purchase a nylon repair kit, 3071-01, which will attach to your existing nylon line providing a new connector for the supply and return lines to connect to.

Nylon Line Attached to Vapor Line

The nylon line attached to the new vapor line is not a direct replacement. It is only a section of nylon line that will splice to the original nylon line on the vehicle.

On the opposite end of the original nylon line, there are connectors. These connectors may be damaged during removal. If so, we offer repair kits with new OEM connectors. These will, also, need to be spliced onto the original nylon line.

Nylon Repair Kits

3068-01 includes 2 – 5/16” Nylon Lines, 180° quick connectors

3069-01 includes 1 - 3/8” Nylon Line, 1 - 5/16” Nylon Line, 180° quick connectors

3070-01 includes 2 - 3/8” Nylon Lines, 180° quick connectors

3071-01 includes 1 - 3/8” Nylon Line, 1 - 5/16” Nylon Line, 90° quick connectors

Nylon Installation Instructions:

Step 1

Cut the new nylon hose in the same position as the original nylon hose.

Step 2

Cut the original nylon hose in the same position as the new nylon hose.

Step 3

Use the original nylon hose with connector and attach it with supplied union to the new nylon hose