Spark plugs VW Golf IV APF (1.6) — NGK, Bosch, Denso
Spark plugs for VW Golf IV APF (1.6L, 1997–2006) — OEM-spec NGK, Bosch, Denso and Champion part numbers with replacement interval.
Engine Specifications
| Parameter | Value |
|---|---|
| Make / Model | VW Golf IV |
| Engine Code | APF |
| Displacement / Fuel | 1.6L petrol |
| Production Years | 1997–2006 |
| Plug type | standard |
| Thread | M14x1.25 |
| Reach | 19 mm |
| Hex size | 16 mm |
| Electrode gap | 0.8 mm |
| Heat range | 6 |
Compatible Spark Plugs
| Brand | Part Number | Type |
|---|---|---|
| NGK | NGK BKR6E | OE supplier |
| Bosch | Bosch 0242235666 | OE supplier |
| Denso | Denso K20PR-U11 | OE supplier |
| Champion | Champion OE022/T10 | aftermarket |
Replacement Interval
| Parameter | Value |
|---|---|
| Mileage | 30 000 km |
| Time | 2 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 APF
- Use the correct plug type — the APF requires standard 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 VW Golf IV APF?
NGK NGK BKR6E, Bosch Bosch 0242235666, Denso Denso K20PR-U11. All three are OE suppliers and guarantee compatibility with this engine.
How often should spark plugs be replaced on VW Golf IV?
Every 30 000 km or 2 years, whichever comes first. Iridium plugs (NGK BKR6E) have a longer service life compared to standard nickel plugs.
Can I fit a different type of spark plug in the APF?
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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