Spark plugs Honda Accord VIII K24Z3 (2.4 i-VTEC) — NGK, Bosch, Denso
Spark plugs for Honda Accord VIII K24Z3 (2.4 i-VTECL, 2008–2015) — OEM-spec NGK, Bosch, Denso and Champion part numbers with replacement interval.
Engine Specifications
| Parameter | Value |
|---|---|
| Make / Model | Honda Accord VIII |
| Engine Code | K24Z3 |
| Displacement / Fuel | 2.4 i-VTECL petrol |
| Production Years | 2008–2015 |
| Plug type | iridium |
| Thread | M14x1.25 |
| Reach | 26.5 mm |
| Hex size | 16 mm |
| Electrode gap | 1.1 mm |
| Heat range | 5 |
Compatible Spark Plugs
| Brand | Part Number | Type |
|---|---|---|
| NGK | NGK IZFR6K11 | OE supplier |
| Bosch | Bosch 0242129516 | OE supplier |
| Denso | Denso SKJ20DR11 | OE supplier |
| Champion | Champion OE034/T10 | 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 K24Z3
- Use the correct plug type — the K24Z3 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 Honda Accord VIII K24Z3?
NGK NGK IZFR6K11, Bosch Bosch 0242129516, Denso Denso SKJ20DR11. All three are OE suppliers and guarantee compatibility with this engine.
How often should spark plugs be replaced on Honda Accord VIII?
Every 60 000 km or 4 years, whichever comes first. Iridium plugs (NGK IZFR6K11) have a longer service life compared to standard nickel plugs.
Can I fit a different type of spark plug in the K24Z3?
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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