Fuel Line Set 2004 Sierra C/K Series Reg Cab, Cab & Chassis 161.5" Wheelbase 2WD & 4WD 6.6L w/engine codes LLY,LBZ Duramax Diesel

Location: Rear Fuel Tank to Front Fuel Tank

Installation Video:

Removal and Installation of FL588-H

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: 15821958

Included in Set: 1 supply line 3/8" ( in 2 easy to install sections), 1 return line 5/16" , hoses to sending unit connections

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: 59" X 12 X 7"

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