Spark plugs BMW 1 Series E87 N45B16 (1.6i) — NGK, Bosch, Denso
Spark plugs for BMW 1 Series E87 N45B16 (1.6iL, 2004–2011) — OEM-spec NGK, Bosch, Denso and Champion part numbers with replacement interval.
Engine Specifications
| Parameter | Value |
|---|---|
| Make / Model | BMW 1 Series E87 |
| Engine Code | N45B16 |
| Displacement / Fuel | 1.6iL petrol |
| Production Years | 2004–2011 |
| Plug type | iridium |
| Thread | M14x1.25 |
| Reach | 26.5 mm |
| Hex size | 16 mm |
| Electrode gap | 0.7 mm |
| Heat range | 7 |
Compatible Spark Plugs
| Brand | Part Number | Type |
|---|---|---|
| NGK | NGK IFR6T11 | OE supplier |
| Bosch | Bosch 0242240649 | OE supplier |
| Denso | Denso IXU22 | OE supplier |
| Champion | Champion RC10YP4 | 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 N45B16
- Use the correct plug type — the N45B16 requires iridium plugs. Upgrading from standard to iridium is acceptable.
- Check the electrode gap — verify the gap is 0.7 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 BMW 1 Series E87 N45B16?
NGK NGK IFR6T11, Bosch Bosch 0242240649, Denso Denso IXU22. All three are OE suppliers and guarantee compatibility with this engine.
How often should spark plugs be replaced on BMW 1 Series E87?
Every 60 000 km or 4 years, whichever comes first. Iridium plugs (NGK IFR6T11) have a longer service life compared to standard nickel plugs.
Can I fit a different type of spark plug in the N45B16?
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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