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0The 2004 Mazda 6 3.0L AT ECU Engine Computer Control Module ECM 4M81-12A650-EF is a direct replacement part for the front of the vehicle. Manufactured by Mazda, this Engine Control Unit (ECU) features a clip-on, screw-in mounting style with pin terminals. Made of steel, this ECM is designed for specific fitment and is not a vintage part. The product is not protected by a lock and is not a performance part. It is a genuine Mazda part that meets OE/OEM standards.
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