The Peterbilt Interaxle Diff Lock Switch is a black, high-quality switch designed specifically for Peterbilt vehicles. This switch, with the manufacturer part number P27-6253-056-01, allows for easy engagement and disengagement of the inter-axle differential lock, providing the driver with full control over the vehicle's drivetrain. Its durable construction and precise engineering make it a reliable component for any Peterbilt truck.