Spark plugs Jaguar XF X260 AJ20P4 (2.0T) — NGK, Bosch, Denso
Spark plugs for Jaguar XF X260 AJ20P4 (2.0TL, 2015–2021) — OEM-spec NGK, Bosch, Denso and Champion part numbers with replacement interval.
Engine Specifications
| Parameter | Value |
|---|---|
| Make / Model | Jaguar XF X260 |
| Engine Code | AJ20P4 |
| Displacement / Fuel | 2.0TL petrol |
| Production Years | 2015–2021 |
| Plug type | iridium |
| Thread | M14x1.25 |
| Reach | 26 mm |
| Hex size | 16 mm |
| Electrode gap | 0.7 mm |
| Heat range | 8 |
Compatible Spark Plugs
| Brand | Part Number | Type |
|---|---|---|
| NGK | NGK SILZKBR7C8G | OE supplier |
| Bosch | Bosch 0242240660 | OE supplier |
| Denso | Denso SKJ20DR-M11 | OE supplier |
| Champion | Champion RSB59YPP | 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 AJ20P4
- Use the correct plug type — the AJ20P4 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 Jaguar XF X260 AJ20P4?
NGK NGK SILZKBR7C8G, Bosch Bosch 0242240660, Denso Denso SKJ20DR-M11. All three are OE suppliers and guarantee compatibility with this engine.
How often should spark plugs be replaced on Jaguar XF X260?
Every 60 000 km or 4 years, whichever comes first. Iridium plugs (NGK SILZKBR7C8G) have a longer service life compared to standard nickel plugs.
Can I fit a different type of spark plug in the AJ20P4?
Upgrading to iridium or platinum is acceptable and gives a slight improvement in cold starts. Do not change the heat range (8) — an incorrect heat range can cause pre-ignition or fouling.
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