This set of four NGK BKR8EIX Iridium IX spark plugs is a performance-oriented ignition upgrade for compatible 2010–2017 Audi A5 Quattro 2.0T applications, particularly modified and higher-output engine setups where a colder spark plug is specified by the tuner or engine builder.
NGK BKR8EIX, stock number 2668, uses a fine-wire iridium center electrode designed to provide a stable spark, strong ignitability, and good resistance to fouling under demanding operating conditions.
Features
- NGK Iridium IX performance spark plugs
- NGK part number BKR8EIX
- NGK stock number 2668
- Fine-wire iridium center electrode
- Designed for strong ignitability and consistent spark performance
- Good anti-fouling characteristics
- Suitable for many modified and forced-induction applications when properly specified
- Set of 4 spark plugs
Fitment
- 2010–2017 Audi A5 Quattro 2.0T – compatible modified / tuned applications
These spark plugs should only be used where NGK BKR8EIX or an equivalent heat range is appropriate for the engine setup. Spark plug requirements can vary based on ECU calibration, boost level, turbocharger configuration, fuel type, ignition system, and engine modifications.
Performance Applications
The BKR8EIX is commonly used as a colder performance spark plug in modified Volkswagen and Audi turbocharged applications. Colder plugs can help manage increased combustion heat in higher-output engines, but the correct heat range and plug gap should always follow the recommendations of the vehicle tuner or engine builder.
Specifications
- Manufacturer: NGK
- Part Number: BKR8EIX
- NGK Stock Number: 2668
- Product Line: Iridium IX
- Center Electrode Material: Iridium
- NGK Heat Range: 8
- Thread Diameter: 14mm
- Thread Reach: 19mm
- Hex Size: 16mm
- Seat Type: Gasket
- Quantity: 4 Spark Plugs
Recommended Use
- Modified Audi A5 Quattro 2.0T applications
- ECU-tuned engines
- Higher-boost turbocharged applications
- Performance builds requiring NGK heat range 8 plugs
What’s Included
- 4 NGK BKR8EIX Iridium IX spark plugs
Installation
Always verify the required spark plug heat range and gap for the specific engine calibration before installation. NGK recommends checking spark plug gap against the vehicle or tuner specification rather than assuming the supplied gap is correct for every application.
Proposition 65 Warnings.
Cancer and Reproductive Harm. See details below.
Items that are not CARB Legal will not be sold and ship to California or CARB states.
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