Features: The truck air dryer repair kit is a must have for truck owners and drivers. It includes all the necessary components to repair and maintain your truck's air dryer, ensuring optimal functionality and durability. Made of high quality plastic and metal materials, this repair kit is designed to withstand wear and corrosion, guaranteeing a durable and stable air dryer after repair. Whether you're a professional truck maintenance technician or a truck repair shop, this all in one repair kit is an essential part of your inventory. It ensures efficient and high quality repairs for truck pump air dryers, enhancing overall maintenance efficiency. In case of unexpected situations where air dryer failure occurs, this repair kit offers a quick solution for drivers, allowing them to restore their vehicles' normal operation promptly. Drive with peace of mind knowing you have a reliable repair kit at hand. Specifications: Material:Plastic+Metal Size:As Picture Shown Color:Black Direction: clockwise/counterclockwise For Trucks B11R B13R Bus FH12 FH16 FM9 FM12 NH12 Part Number:20884121 4324259222 Interchangeable part number:4324250010 21620172 20700794 20873849 20884103 21398254 21480092 85013131 85003628 LA8007 5001837116 II19338 Package Includes: 1 Set Air Dryer Repair Kit note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.