Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Mazda 3 L4-2.0L (MZR)FACTORY OEM SERVICE PROCEDURE
Parts Information
| Part | Manufacturer | OEM Part # | Price | Notes |
| ECM | ||||
| Manual Trans | ||||
| Federal | ||||
| 5 Speed Manual | MZD | LFNC18881 | 711.49 | |
| 6 Speed Manual | MZD | PE2G18881S | 1331.14 | |
| California | ||||
| 5 Speed Manual | MZD | LFNE18881 | 695.69 | |
| 6 Speed Manual | ||||
| To 7/23/12 | MZD | PE0718881P | 1331.15 | |
| From 7/23/12 | MZD | PE0718881R | 0.00 | |
| Auto Trans | ||||
| Federal | ||||
| 5 Speed Auto | MZD | LFND18881 | 695.69 | |
| 6 Speed Auto | MZD | PE2K18881R | 1331.15 | |
| California | ||||
| 5 Speed Auto | MZD | LFNF18881 | 711.49 | |
| 6 Speed Auto | MZD | PE0818881P | 1331.15 |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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