3Pcs Torque Converter Lock-Up Solenoid 31825AA050 31825AA051 31825AA052 For Lineartronic CVT TR580 TR690 Transmission Set of 3 TCC solenoids designed for Lineartronic CVT TR580 and TR690 transmissions.These solenoids enhance torque converter lock-up, contributing to improved fuel efficiency and vehicle performance.Each unit is engineered to match manufacturer specifications for proper fit and integration into the transmission system.Constructed with metal and plastic components, the solenoids are built to endure regular use and varying driving conditions.They support consistent and extended service life under typical operating environments.Installation is straightforward as these solenoids serve as direct replacements for part numbers 31825AA050, 31825AA051, 31825AA052, 31706AA030, 31706AA031, 31706AA032, and 31706AA033.No modifications or special tools are required.The set provides a complete replacement solution for compatible transmission systems.