The product is a used 4L60E 4L65E LS1 torque converter with a high stall speed of 3800-4000 and a 10" 300MM size. Build date of 4/23.It is manufactured by TOTAL TRANSMISSIONS CHICAGO . Made in the United States, this performance part is designed to enhance the auto performance of vehicles. The manufacturer part number is GMSS2, ensuring compatibility with specific GM vehicles.It is in perfect working condition.