This rear lower bed section (6' bed) passenger's side fits:  1999-2006 Chevrolet Silverado and GMC Sierra Standard Cab Pickups, 1999-2006 Chevrolet Silverado and GMC Sierra Extended 3/4 door Cab Pickups, and 1999-2006 Chevrolet Silverado and GMC Sierra Crew Cab Pickups,
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