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.
2003 Mazda Protege L4-2.0L DOHCFACTORY OEM SERVICE PROCEDURE
Parts Information
| Part | Manufacturer | OEM Part # | Price | Notes |
| ECM | ||||
| Manual Trans | ||||
| 4DOOR | ||||
| Without Sport Suspension | MZD | FS9N18881C | 1252.50 | Order By Description. |
| With Sport Suspension | MZD | FS8L18881C | 946.95 | Contact Dealer for most current part and price information. Order By Description. |
| 5DOOR | MZD | FS8L18881C | 946.95 | Contact Dealer for most current part and price information. Order By Description. |
| Auto Trans | ||||
| 4DOOR | MZD | FS8M18881C | 1003.68 | Order By Description. |
| 5DOOR | MZD | FSAE18881D | 1027.93 | Order By Description. |
Factory Service Tools
Use the Manual With the Right Hardware
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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.