Important Product Information
Shop LinesToGo for your 2004 Sierra truck fuel lines. Our FL588-B4 set of fuel lines are built for any C/K2500HD/3500 model with an extended cab and a 6.6L engine. These models must also have an engine code reading LB7 and an 8th digit of VIN with the number 1.
Mid year engine change in 2004, check 8th digit of VIN is number 1
Fuel Cooler Line included
Hoses between fuel line and fuel tank are not included. You may, also, need these, 5070-01.
Location: Engine to Hose Connection at Fuel Tank
Please Note: If you have purchased an aftermarket replacement fuel cooler, the fuel cooler connector lines attached to the fuel cooler may be different than the OEM fuel cooler connector lines. As shown in Illustration A, the aftermarket fuel cooler connector lines are made with a straight sharp edge. When these are plugged into the fuel cooler line, they will cut the o-ring inside the connector causing a leak. If you wish to replace the fuel cooler connector lines before installation of the fuel cooler line, they are available to purchase under part number FL591-A as shown in Illustration B.
We are unable to warranty any of our products that are damaged by aftermarket fuel cooler connector lines.
Illustration A Illustration B
Aftermarket fuel cooler connector line: LinesToGo FL591-A fuel cooler connector line:
Straight Sharp Edge Rounded Beveled Edge
OEM Part Number: 15169342
Included in Set: 1 supply line 1/2" ( in 2 easy to install sections), 1 return line 3/8" ( in 2 easy to install sections), 1 fuel cooler line 3/8", hoses to engine connection, hoses to join rear and front sections, hose to fuel cooler connection
Tube Construction: Lines are constructed from Galfan® coated steel tubing for rust protection with original equipment end forms and fittings and are CNC (Computer Numerically Controlled) bent for an easy precise installation.
Hose Construction: All hoses are made from Stainless Steel Braided Teflon with OE style fittings
Warranty: 1 Year
Box Dimensions: 56" X 12" X 11"
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