Spark plugs Suzuki Jimny IV K15B (1.5) — NGK, Bosch, Denso
Spark plugs for Suzuki Jimny IV K15B (1.5L, 2018–2023) — OEM-spec NGK, Bosch, Denso and Champion part numbers with replacement interval.
Engine Specifications
| Parameter | Value |
|---|---|
| Make / Model | Suzuki Jimny IV |
| Engine Code | K15B |
| Displacement / Fuel | 1.5L petrol |
| Production Years | 2018–2023 |
| Plug type | iridium |
| Thread | M14x1.25 |
| Reach | 19 mm |
| Hex size | 16 mm |
| Electrode gap | 1.1 mm |
| Heat range | 6 |
Compatible Spark Plugs
| Brand | Part Number | Type |
|---|---|---|
| NGK | NGK ILKAR7L-11 | OE supplier |
| Bosch | Bosch 0242236573 | OE supplier |
| Denso | Denso IW16 | OE supplier |
| Champion | Champion RC8BMC4 | 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 K15B
- Use the correct plug type — the K15B 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 Suzuki Jimny IV K15B?
NGK NGK ILKAR7L-11, Bosch Bosch 0242236573, Denso Denso IW16. All three are OE suppliers and guarantee compatibility with this engine.
How often should spark plugs be replaced on Suzuki Jimny IV?
Every 60 000 km or 4 years, whichever comes first. Iridium plugs (NGK ILKAR7L-11) have a longer service life compared to standard nickel plugs.
Can I fit a different type of spark plug in the K15B?
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.
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