Atherton Automotive has exclusively been using Certified Transmissions for over ten years or so. Not one time that I can remember have we ever had any issues what so ever with any of the transmissions that we install from Certified or have had Certified Transmission install for us. It is nice to know that when a customer is investing in a new remanufactured transmission that they will be getting a service & product that meets or exceed O.E. standards. Here at Atherton Automotive we strive on only installing the best quality parts & performing dealer level diagnostics & repair that's why we choose Certified Transmissions on all transmission replacements that we install!