Description
L34M18881A / E6T56575H Mazda 3 BK SP23 Engine ECU 2003–2009 Genuine OEM Engine Control Unit.
Product Description
This listing is for a Genuine Mazda 3 BK SP23 Engine Control Unit (ECU), suitable for model years 2003 to 2009.
Part number L34M-18-881A with manufacturer reference E6T56575H is the correct ECU used in select Mazda 3 BK and SP23 models during this production range.
The ECU manages essential engine operations such as fuel injection, ignition timing, air–fuel ratio, idle control, and emissions regulation.
This OEM unit has been tested and confirmed fully functional, making it an ideal replacement for vehicles experiencing rough idle, no-start conditions, check-engine light, misfires, or poor performance caused by a faulty ECU.
OEM Part Numbers
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Mazda: L34M-18-881A
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Manufacturer: E6T56575H
Matching the part number with your existing ECU is required for correct fitment.
Compatibility Table
| Make | Model | Variant | Chassis | Year Range | Notes |
|---|---|---|---|---|---|
| Mazda | Mazda 3 | SP23 | BK | 2003–2009 | Direct fit when part numbers match |
| Mazda | Mazda 3 | 2.0 / 2.3 Petrol (market dependent) | BK | 2003–2009 | May require immobilizer pairing |
Compatibility is strictly based on part number.
Key Features
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Genuine OEM Mazda ECU
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Compatible with Mazda 3 BK / SP23 models
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Fully tested and in perfect working condition
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Restores proper engine performance and fuel efficiency
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Direct replacement for L34M-18-881A / E6T56575H
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Professional programming or key coding may be required
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Mazda 3 BK ECU L34M-18-881A
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Mazda SP23 engine control unit
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E6T56575H Mazda 3 ECU
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Mazda 3 2003 2004 2005 2006 2007 2008 2009 ECU
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Mazda BK engine computer OEM
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Mazda ECM ECU replacement
-
Mazda 3 BK SP23 engine control module
Key features
- Genuine OEM Mazda ECU
- Compatible with Mazda 3 BK / SP23 models
- Fully tested and in perfect working condition
- Restores proper engine performance and fuel efficiency
- Direct replacement for L34M-18-881A / E6T56575H
- Professional programming or key coding may be required
- Mazda 3 BK ECU L34M-18-881A
- Mazda SP23 engine control unit
- E6T56575H Mazda 3 ECU
- Mazda 3 2003 2004 2005 2006 2007 2008 2009 ECU
- Mazda BK engine computer OEM
- Mazda ECM ECU replacement
Compatibility Table
| Make | Model | Variant | Chassis | Year Range | Notes |
|---|---|---|---|---|---|
| Mazda | Mazda 3 | SP23 | BK | 2003–2009 | Direct fit when part numbers match |
| Mazda | Mazda 3 | 2.0 / 2.3 Petrol (market dependent) | BK | 2003–2009 | May require immobilizer pairing |
Compatibility is strictly based on part number.
Shipping, returns and warranty
- Worldwide shipping with tracking
- 30-day returns on unused, uninstalled parts
- 90-day limited warranty against defects
Send us your VIN and we confirm fitment before shipping. See our shipping policy and return policy.
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