Mazda 3 BK ECU LF1D-18-881B | Engine Control Unit E6T56574HS1 OEM (2003–2009)
Mazda 3 BK Engine Control Unit LF1D-18-881B – OEM ECU E6T56574HS1
The LF1D-18-881B Engine Control Unit, also referenced as E6T56574HS1, is a genuine OEM ECU designed for the Mazda 3 BK manufactured between 2003 and 2009.
This ECU serves as the central control system for the engine, regulating fuel injection, ignition timing, throttle response, emissions systems, and communication between sensors and engine components. Built to Mazda factory specifications, it ensures smooth performance, improved fuel economy, and dependable reliability.
Replacing a faulty ECU with a genuine OEM unit restores proper engine functionality and helps prevent drivability issues.
Product Specifications
- Part Number: LF1D-18-881B
- Alternate Number: E6T56574HS1
- Vehicle: Mazda 3 BK
- Production Years: 2003–2009
- Engine Type: 2.0L Petrol (LF Engine)
- Transmission: Automatic / Manual (varies by application)
- System Type: Engine Control Unit (ECU / ECM)
- Condition: Genuine OEM – Fully Tested Used Unit
- Warranty: 30 Days
- Shipping: Worldwide with tracking
Compatibility Table – Mazda 3 BK ECU LF1D-18-881B
| Make | Model | Engine | Transmission | Year Range |
|---|---|---|---|---|
| Mazda | 3 BK | 2.0L Petrol | Automatic | 2003–2009 |
| Mazda | 3 BK Hatchback | 2.0L Petrol | Manual / Automatic | 2003–2009 |
| Mazda | Axela BK (JDM) | 2.0L Petrol | CVT / Automatic | 2003–2009* |
Compatibility may vary depending on VIN, market region, immobilizer type, and software version. Always match part number LF1D-18-881B / E6T56574HS1 before purchase.
What Does the ECU Control?
The Engine Control Unit manages:
- Fuel injection timing
- Ignition timing
- Air-fuel mixture ratio
- Electronic throttle control
- Idle speed management
- Emissions systems
- Sensor communication (MAF, MAP, O2, TPS, coolant sensors, etc.)
A properly functioning ECU ensures smooth acceleration, fuel efficiency, and reliable engine operation.
Common Symptoms of a Faulty ECU
- Check Engine Light illuminated
- Engine starting issues
- Rough idle or engine stalling
- Poor fuel economy
- Loss of power
- Engine hesitation or misfire
- Communication errors during diagnostics
Replacing the ECU with a genuine OEM unit usually resolves these issues effectively.
Why Buy from Automan Spare Parts?
Automan Spare Parts is a trusted supplier of genuine OEM automotive electronic modules worldwide.
What You Get:
- 100% Genuine OEM Mazda ECUs
- Fully Tested and Verified Units
- Competitive Wholesale Pricing
- Fast Worldwide Shipping
- Tracking on All Orders
- 30-Day Warranty
- Expert Compatibility Support
We specialize in ECUs, TCMs, BCMs, ABS modules, and other automotive electronics for Japanese and European vehicles.
Installation & Programming Notes
This ECU may require:
- Immobilizer synchronization
- ECU coding or relearn procedure
- Key programming
- Diagnostic scan tool setup
Professional installation is strongly recommended.
Order Mazda 3 BK ECU LF1D-18-881B Today
Restore your vehicle’s performance with a Genuine OEM Mazda 3 BK Engine Control Unit LF1D-18-881B / E6T56574HS1 from Automan Spare Parts.
Contact us with your VIN or ECU image to confirm compatibility before placing your order.
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