Check the listing for details. BD Diesel AutoLoc Torque Converter Lock-Up Controller 1030390. Condition: New. Listed at 346.95 USD. The BD-Power 1030390 AutoLoc Torque Converter Lock-Up Controller for your 1994-2003 Ford 7.3L Powerstroke, 1994-2005 Dodge 5.9L Cummins, or 1992-2000 GM 6.5L Diesel 2500/3500 is designed for use with the BD-Power Exhaust Brake. If your torque converter isn't locked up when the exhaust brake is applied, you're only benefiting from a fraction of its retarding power. The BD AutoLoc commands the torque converter to lock up, and stay locked up, any time the exhaust brake is applied in third and fourth gears. This not only helps with engine braking, but because there's no clutch slippage, transmission oil temperatures remain low. The lock-up clutch and exhaust brake automatically disengage at low speeds to prevent stalling and transmission/converter damage. Features:Controls Torque Converter LockupHelps Lower Transmission Temperatures1 Year Warranty