The Freightliner 1981 To 2014 Rear Differential Breather Axle Vent Kit is a reliable and durable solution for restoring functionality to your vehicle. Designed as a direct replacement for the original vent, this kit is made from high-quality materials to ensure long-lasting performance. With a diameter of 0.236 inches and a height of 2.15 inches, it fits most Freightliner models from 1981 to 2014. Trustworthy and backed by a team of experts with over a century of automotive experience, this kit is the practical choice for replacing a failed vent due to blockage or fatigue. Installation hardware not included.