The Dorman 0.05" Rear Differential Breather Vent Kit is the perfect solution for restoring your vehicle's proper performance. This direct replacement of OE quality parts is produced with the best components for outstanding quality and performance. It is designed to provide a reliable and durable solution for your vehicle. This kit includes all the necessary components for a complete installation. With its easy installation and reliable performance, this kit is the perfect choice for your Freightliner. FleetPride is your First Click in Heavy Duty®.