Dee Zee DZ3378 - Manual (Page 12)

Attach the running board to the angle brace using the 1/4" x 1" ribneck carriage bolt [M],
1/4" flat washer [J], and 1/4" hex nut [L]. Tighten using a 7/16" wrench or deep well socket.
Tighten the hardware attaching the flap to the running board with a 7/16" socket and wrench.
Tighten the hardware attaching the mud flap to the wheel well using a M8 socket/wrench.
10
Tighten the hardware attaching the mud flap to the wheel well using a M8 socket/wrench.
Repeat process for passenger side.
DZ 3378 10 OF 10 12/15/2011