Spark plugs Ford Focus IV YZDA (1.5) — NGK, Bosch, Denso
Spark plugs for Ford Focus IV YZDA (1.5L, 2018–2022) — OEM-spec NGK, Bosch, Denso and Champion part numbers with replacement interval.
Engine Specifications
| Parameter | Value |
|---|---|
| Make / Model | Ford Focus IV |
| Engine Code | YZDA |
| Displacement / Fuel | 1.5L petrol |
| Production Years | 2018–2022 |
| Plug type | iridium |
| Thread | M14x1.25 |
| Reach | 19 mm |
| Hex size | 16 mm |
| Electrode gap | 1.0 mm |
| Heat range | 6 |
Compatible Spark Plugs
| Brand | Part Number | Type |
|---|---|---|
| NGK | ILZKAR8A8G | OE supplier |
| Bosch | 0 242 240 651 | OE supplier |
| Denso | IW22TT | OE supplier |
| Champion | 9005 | 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 YZDA
- Use the correct plug type — the YZDA requires iridium plugs. Upgrading from standard to iridium is acceptable.
- Check the electrode gap — verify the gap is 1.0 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 Ford Focus IV YZDA?
NGK ILZKAR8A8G, Bosch 0 242 240 651, Denso IW22TT. All three are OE suppliers and guarantee compatibility with this engine.
How often should spark plugs be replaced on Ford Focus IV?
Every 60 000 km or 4 years, whichever comes first. Iridium plugs (ILZKAR8A8G) have a longer service life compared to standard nickel plugs.
Can I fit a different type of spark plug in the YZDA?
Upgrading to iridium or platinum is acceptable and gives a slight improvement in cold starts. Do not change the heat range (6) — an incorrect heat range can cause pre-ignition or fouling.
Where to Buy