Spark Plug Specifications
| Parameter | Specification |
|---|---|
| Plug Number | NGK SILZKBR8D8S (verify exact suffix via the NGK finder for your engine) |
| Type | Double Iridium |
| Electrode Gap | 0.9 mm |
| Quantity Required | 3 (1.5 3-cyl base Cooper; 4 on 2.0 Cooper S) |
| Change Interval | Every 60,000 miles |
Recommended Spark Plugs for MINI Cooper
NGK SILZKBR8D8S (Set of 4)
Denso Double Iridium TT
Bosch Double Iridium Spark Plug Set
Frequently Asked Questions
What spark plugs does a MINI Cooper use?
The MINI Cooper (F66) uses NGK SILZKBR8D8S double iridium spark plugs. The gap should be set to 0.9 mm. You need 3 plugs on the 1.5-litre 3-cylinder base Cooper (4 on the 2.0 Cooper S).
How often should I change spark plugs on a MINI Cooper?
Every 60,000 miles for double iridium plugs. Iridium and double iridium plugs last longer than standard copper or nickel plugs.
Can I use a different brand of spark plug in my MINI Cooper?
Yes, as long as it matches the exact specification — same heat range, thread size, reach, and gap (0.9 mm). NGK SILZKBR8D8S from any major manufacturer (NGK, Denso, Bosch, Champion) will work.
What are the signs of worn spark plugs?
Rough idle, poor fuel economy, hesitation during acceleration, engine misfires, and difficulty starting. If your engine management light comes on with a misfire code, spark plugs are a common culprit.
How we check fitment for this guide
We cross-reference fitment figures against manufacturer specifications and OE-supplier catalogue data where available, and matched to the standard codes that actually govern fit — battery type/group sizes, wiper lengths and fitting types, bulb fitment codes, tyre size markings, and oil specifications. We work by make, model, year, engine, and build date, because a single model can take different parts across its life. Where the right part depends on your exact vehicle, we tell you to confirm by registration or VIN. More on our method →