Spark plugs Opel Insignia A A20NFT (2.0 Turbo) — NGK, Bosch, Denso
Spark plugs for Opel Insignia A A20NFT (2.0 TurboL, 2008–2017) — OEM-spec NGK, Bosch, Denso and Champion part numbers with replacement interval.
Engine Specifications
| Parameter | Value |
|---|---|
| Make / Model | Opel Insignia A |
| Engine Code | A20NFT |
| Displacement / Fuel | 2.0 TurboL petrol |
| Production Years | 2008–2017 |
| Plug type | iridium |
| Thread | M14x1.25 |
| Reach | 26.5 mm |
| Hex size | 16 mm |
| Electrode gap | 0.8 mm |
| Heat range | 7 |
Compatible Spark Plugs
| Brand | Part Number | Type |
|---|---|---|
| NGK | NGK ILZKBR7B8DGS | OE supplier |
| Bosch | Bosch 0242236565 | OE supplier |
| Denso | Denso IKH20TT | OE supplier |
| Champion | Champion PLZKBR7B | 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 A20NFT
- Use the correct plug type — the A20NFT 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 Opel Insignia A A20NFT?
NGK NGK ILZKBR7B8DGS, Bosch Bosch 0242236565, Denso Denso IKH20TT. All three are OE suppliers and guarantee compatibility with this engine.
How often should spark plugs be replaced on Opel Insignia A?
Every 60 000 km or 4 years, whichever comes first. Iridium plugs (NGK ILZKBR7B8DGS) have a longer service life compared to standard nickel plugs.
Can I fit a different type of spark plug in the A20NFT?
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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