NGK Iridium Spark Plugs — SILFR6A11 (Pack of 4)
This pack of four NGK SILFR6A11 Iridium Spark Plugs uses a fine iridium centre electrode for superior ignitability, sharper throttle response and excellent anti-fouling.
- Fine iridium centre electrode for high ignitability and sharp throttle response
- Long service life — iridium is much harder-wearing than platinum, holding its precise edge for longer
- Superior anti-fouling and stable idle
- Strong, focused spark from the fine-wire tip design
- An ideal performance upgrade or premium replacement for modern and performance engines
- From NGK — the world's leading spark plug brand
- Supplied as a pack of 4
Use the Part Finder or check the vehicle compatibility list to confirm these plugs suit your vehicle.
| SKU | SILFR6A11-4 |
| Brand | NGK |
| Number In Pack | 4 |
Packaging: Manufacturers periodically update their packaging and labelling. You may receive the current or a previous design — the product, formulation and part number are unchanged.
Fitment (vehicle-specific products): For products listed to suit a specific vehicle, our fitment data is kept as accurate as possible, but vehicle catalogues are not perfect. Some models had more than one part fitted depending on build date, engine, or component size/variant. It is the buyer's responsibility to confirm the part suits their vehicle before purchasing. If you have any doubt, please message us with your vehicle's registration number and state (preferred), or full VIN/build details, and we'll do our best to confirm before you buy.