Spark plugs Toyota Yaris P9 1NZ-FE (1.3) — NGK, Bosch, Denso
Spark plugs for Toyota Yaris P9 1NZ-FE (1.3L, 2005–2011) — OEM-spec NGK, Bosch, Denso and Champion part numbers with replacement interval.
Engine Specifications
| Parameter | Value |
|---|---|
| Make / Model | Toyota Yaris P9 |
| Engine Code | 1NZ-FE |
| Displacement / Fuel | 1.3L petrol |
| Production Years | 2005–2011 |
| Plug type | iridium |
| Thread | M14x1.25 |
| Reach | 19 mm |
| Hex size | 16 mm |
| Electrode gap | 1.1 mm |
| Heat range | 5 |
Compatible Spark Plugs
| Brand | Part Number | Type |
|---|---|---|
| NGK | NGK ZFR5FIX | OE supplier |
| Bosch | Bosch 0242235769 | OE supplier |
| Denso | Denso SK16R11 | OE supplier |
| Champion | Champion ILG49 | aftermarket |
Replacement Interval
| Parameter | Value |
|---|---|
| Mileage | 60 000 km |
| Time | 4 years |
Iridium and platinum plugs last 2–3× longer than standard copper plugs. Replace them on schedule — worn plugs increase fuel consumption by 3–5% and reduce power output.
Choosing Spark Plugs for 1NZ-FE
- Use the correct plug type — the 1NZ-FE requires iridium plugs. Upgrading from standard to iridium is acceptable.
- Check the electrode gap — verify the gap is 1.1 mm before installation.
- Torque correctly — for M14x1.25 thread: aluminium head 20–25 Nm, cast iron head 25–30 Nm.
- Replace as a full set — always replace all cylinders at once to ensure even combustion across all cylinders.
FAQ
Which spark plugs fit Toyota Yaris P9 1NZ-FE?
NGK NGK ZFR5FIX, Bosch Bosch 0242235769, Denso Denso SK16R11. All three are OE suppliers and guarantee compatibility with this engine.
How often should spark plugs be replaced on Toyota Yaris P9?
Every 60 000 km or 4 years, whichever comes first. Iridium plugs (NGK ZFR5FIX) have a longer service life compared to standard nickel plugs.
Can I fit a different type of spark plug in the 1NZ-FE?
Upgrading to iridium or platinum is acceptable and gives a slight improvement in cold starts. Do not change the heat range (5) — an incorrect heat range can cause pre-ignition or fouling.
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