03 04 TOYOTA COROLLA MATRIX 1.8L ECU ECM PCM ENGINE COMPUTER 89666-02152 TESTED TIPM Pro 6C3A-12A650-DHB and VK2-C3594 - You

6C3A-12A650-DHB and VK2-C3594  - You must have both of the numbers on your part number sticker

NOTE: Connector plastic is chipped so for one connector you'll need to slide it on half-way then press the locking mechanism down which will engage the locktab and slide the connector on tight

05187907AE

MEC33-450 C2 - You must match this

03 04 TOYOTA COROLLA MATRIX 1.8L ECU ECM PCM ENGINE COMPUTER 89666-02152 TESTED TIPM Pro 6C3A-12A650-DHB and VK2-C3594 - YouPart Number 89666 02152 You must match this exactly! Fitment Interchange You must match your part number exactly as seen above. If any numbers are off compared to your original it will not work properly. ECM may require programming or coding to your vehicle or vehicle's security system and is not plug and play. Please verify with your mechanic prior to purchasing. ECM will fit 2003 and 2004 Toyota Corolla and Matrix models with an exact part number