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Alum Box Boards 2007–C Chevy/GMC FS PU OC7438EX, OC7438EXB IN423 OC8438EX, OC8438EXB Hardware included shown on right. DRILLING INTO VEHICLE IS REQUIRED! FL181 FL180D/P Bolt pack There are extra components in the bolt pack Tools required: 1/2” socket ...
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Alum Box Boards 2007–C Chevy/GMC FS PU OC7438EX, OC7438EXB IN423 OC8438EX, OC8438EXB 5/16” bolt (for clip nut) or 8mm bolt 8mm bolt (for pull nut) Attach a 3124F angle bracket to the FL181 Install FL180D & P using 5/16” flanged bolt (for and FL180D &...
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Alum Box Boards 2007–C Chevy/GMC FS PU OC7438EX, OC7438EXB IN423 OC8438EX, OC8438EXB Tighten any and all loose bolts. Repeat all steps for opposite side.