Fit 07-13 GMC Sierra Extended Cab Alpine S-W12D4 Single 12 Sub Box HA-A800.1 Amp

Empty Sub Boxes. - Kick Panels. Fit 07-13 GMC Sierra Extended Cab Alpine S-W12D4 Single 12 Sub Box HA-A800.1 Amp Compatible with 2007-2013 GMC Sierra Extended Cab Truck Alpine Type S S-W12D4 Single 12 Sub Box Enclosure with Harmony HA-A800.1 Amplifier & 4GA Amp Kit.

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