Upgrade your ignition setup with this 4-pack set of NGK BKR8EIX Iridium IX spark plugs, stock number 2668. These heat range 8 spark plugs are commonly used in high-performance, boosted, and modified engine applications where a colder spark plug is required.
The NGK Iridium IX design uses a fine-wire iridium center electrode to help provide a stable spark, strong ignition performance, and improved durability compared to standard nickel spark plugs. The BKR8EIX is a popular colder-plug option for many Honda, Acura, import performance, and turbocharged engine setups.
This listing includes four spark plugs, making it a convenient set for 4-cylinder applications. Always confirm the correct plug type, heat range, and gap for your specific engine, fuel setup, boost level, and tuning requirements before installation.
Features
- Genuine NGK Iridium IX spark plugs
- Part number: BKR8EIX
- NGK stock number: 2668
- Sold as a 4-pack set
- Heat range 8
- Fine-wire iridium center electrode
- Trivalent metal plating for corrosion and anti-seize protection
- Gasket seat design
- 14mm thread diameter
- 1.25mm thread pitch
- 19mm thread reach
- 5/8 in. / 16mm hex size
- Solid terminal
- Common colder-plug option for modified and high-performance engines
Heat Range Reference
BKR8EIX is commonly used as:
2 steps colder than BKR6EIX
1 step colder than BKR7EIX
Important Fitment Note
Confirm plug fitment, heat range, and spark plug gap with your engine builder or tuner before ordering. Iridium plug electrodes are delicate, so use care when checking or adjusting gap and do not apply pressure directly to the fine-wire center electrode.
What’s Included
- 4 NGK BKR8EIX Iridium IX spark plugs
- Stock number: 2668
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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