Experience reliable performance with Monster's StockMonster 6L90E transmission—a 6-speed automatic built for strength, efficiency, and everyday drivability. Designed for light-duty trucks, SUVs, and cars, this transmission ensures smooth shifts and improved fuel economy. Featuring premium components like an upgraded pump, heavy-duty torque converter, and factory-spec engineering, the StockMonster is perfect for daily driving, towing, and light-duty tasks, delivering dependable power and durability.