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This Automatic Transmission Control Unit is a high-quality replacement for the BMW 325i, engineered to meet OEM specifications for fit, durability, and performance. It monitors and manages transmission functions, ensuring smooth gear changes, optimal shift timing, and consistent operation. Made from durable materials, it provides long-lasting reliability and helps prevent transmission issues caused by faulty or worn units. Easy to install, this control unit restores proper automatic transmission functionality and enhances overall driving performance.