Important Product Information
Shop LinesToGo for your 2004 Sierra fuel lines. Our FL58-E4 set of fuel lines are designed for all C/K2500HD/3500 models with an extended cab and 6.6L engine, with engines that read the code LLY, and the 8th digit of the VIN is number 2.
Mid year engine change in 2004, check 8th digit of VIN is number 2
Fuel Cooler Line included
Location: Engine to Hose Connection off 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: 20832563
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, hoses 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 13" X 11"
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