Product Details: Get your semi truck Ready for the Road Ahead™ with advanced protection against transmission contamination, with the Fuller- Transmissions Oil Seal Kit. Thanks to its added slinger, this replacement kit is the ideal solution to update oil seals, while also deflecting contaminants such as dirt, debris, and pollutants. Crafted with top-tier materials to provide long-term reliability. FleetPride is your First Click in Heavy Duty®.