Enhance the look of your Peterbilt 389 with Wingmaster Peterbilt Side Window Post Covers. Made of durable stainless steel, these covers are designed to fit 2006 and newer models. Sold in pairs for both the left and right side, these covers add a sleek and polished touch to your truck's exterior. Upgrade your Peterbilt with these practical and stylish side window post covers, giving your rig a professional and finished appearance.