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P51K18881A Mazda 3 Sport Engine Control Unit ECU 2797008662
- $75.05
- $75.05
- Unit price
- per
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Specifications
Item condition
Pre-owned
Type
Engine Control Unit (ECU)
Brand
DENSO
Model
Mazda Mazda 3 ~2014-2016
Product Name
P51K18881A / 2797008662 / PEER188k2B Mazda 3 Sport 2015 Engine Control Unit ECU
Manufacturer Part Number
P51K18881A , 2797008662 , PEER188k2B
OE/OEM Part Number
P51K18881A , 2797008662 , PEER188k2B
Country of Manufacture
Japan
Manufacturer Warranty
30 Days
Reg. Year/Mont
~2014-2016
Programming Required
true
P51K18881A / 2797008662 / PEER188k2B Mazda 3 Sport 2015 Engine Control Unit ECU. Product DescriptionThis OEM Engine Control...
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P51K18881A / 2797008662 / PEER188k2B Mazda 3 Sport 2015 Engine Control Unit ECU.
Product Description
This OEM Engine Control Unit (ECU) with part number P51K-18-881A (also referenced as P51K18881A / 2797008662) is designed for the Mazda 3 Sport / Hatchback (2014–2016 generation) equipped with the appropriate petrol engine. Multiple remanufactured listings confirm that this unit is suitable for the 2015 model year and certain engine variants.
The ECU oversees fuel injection, ignition timing, sensor feedback, emission controls, and diagnostics. Before installing a replacement, verify the following:
-
Confirm your existing ECU part number is an exact match (P51K-18-881A or P51K18881A)
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Ensure engine variant, transmission type, and wiring harness layout are compatible
-
In many cases the replacement unit will need to be programmed or adapted to your vehicle’s VIN and immobiliser system
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Used units should be tested and verified for correct function (no internal faults, correct software/hardware version, good condition)
Compatibility Table
| Vehicle Make | Model | Year | Engine Variant | ECU Part Number(s) | Notes |
|---|---|---|---|---|---|
| Mazda | Mazda 3 | ~2014-2016 | Petrol (e.g., 2.0L SkyActiv or compatible) | P51K-18-881A / P51K18881A / 2797008662 | Used listings cite this exact part number for 2015 model year. |
Important Notes & Buyer Tips
-
Match the part number exactly—even small variations can lead to incompatibility.
-
Replacement ECUs often need programming/adaptation (especially VIN/immobiliser). Some sellers provide “plug & play,” but confirm details. Verify condition of the ECU: check connectors, pins, signs of damage or corrosion.
-
After installation: clear fault codes, verify engine starts and idles correctly, scan for any remaining faults.
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Request pictures of the unit label, part number and hardware/software version before purchase.
Shipping Information
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- Expedited Shipping (Paid): For orders above $50, international shipping is available for a flat rate of $39.00. Delivery time varies based on the destination (typically 5-10 business days).
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