Peterbilt 389 Glider Dash Knobs: Style & Performance Customize your Peterbilt 389 with dash knobs that combine functionality and style. Choose from chrome designs with colorful jewels, wood grain, stainless steel, or billet aluminum options. Personalize controls like air conditioning and CB radio with jewel accents in amber, blue, green, purple, red, or clear. For a premium look, select knobs with laser-etched Peterbilt logos or classic chrome finishes. Built for durability, these knobs feature stainless steel hardware and protective coatings to endure tough road conditions. Refresh your interior with a blend of form and function tailored to your Peterbilt 389 Glider.