Spark plugs Renault Megane IV H5H (1.3) — NGK, Bosch, Denso
Spark plugs for Renault Megane IV H5H (1.3L, 2018–2023) — OEM-spec NGK, Bosch, Denso and Champion part numbers with replacement interval.
Engine Specifications
| Parameter | Value |
|---|---|
| Make / Model | Renault Megane IV |
| Engine Code | H5H |
| Displacement / Fuel | 1.3L petrol |
| Production Years | 2018–2023 |
| Plug type | iridium |
| Thread | M14x1.25 |
| Reach | 19 mm |
| Hex size | 16 mm |
| Electrode gap | 0.8 mm |
| Heat range | 7 |
Compatible Spark Plugs
| Brand | Part Number | Type |
|---|---|---|
| NGK | LZKAR7A8EG | OE supplier |
| Bosch | 0 242 240 625 | OE supplier |
| Denso | IW20TT | OE supplier |
| Champion | 9800 | 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 H5H
- Use the correct plug type — the H5H requires iridium plugs. Upgrading from standard to iridium is acceptable.
- Check the electrode gap — verify the gap is 0.8 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 Renault Megane IV H5H?
NGK LZKAR7A8EG, Bosch 0 242 240 625, Denso IW20TT. All three are OE suppliers and guarantee compatibility with this engine.
How often should spark plugs be replaced on Renault Megane IV?
Every 60 000 km or 4 years, whichever comes first. Iridium plugs (LZKAR7A8EG) have a longer service life compared to standard nickel plugs.
Can I fit a different type of spark plug in the H5H?
Upgrading to iridium or platinum is acceptable and gives a slight improvement in cold starts. Do not change the heat range (7) — an incorrect heat range can cause pre-ignition or fouling.
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