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Overview
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Part #: BKR8EIX
Spark Plug - NGK Iridium IX - 14 mm Thread - 0.749 in Reach - Gasket Seat - Stock Number 2668 - Resistor - Each
Vehicle Symptoms
- engine misfires under heavy load
- rough idle at stoplights
- loss of power during acceleration
- poor fuel economy
- check engine light flashing under boost
Diagnostic Codes
- P0300 – random misfire
- P0301 – cylinder 1 misfire
- P0302 – cylinder 2 misfire
- P0303 – cylinder 3 misfire
- P0304 – cylinder 4 misfire
Relevant Conversations
- NGK BKR8EIX Iridium IX spark plug gap specs
- BKR8EIX vs BKR7EIX heat range difference
- P0300 random misfire at high rpm after tune
- NGK 2668 spark plug cross reference
- best colder spark plugs for turbocharged engine
- how to gap NGK Iridium IX plugs
- BKR8EIX install torque specs
- misfire under boost only at WOT
- NGK Iridium IX vs Denso Iridium Power
- spark plug replacement with coil packs
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | NGK |
| Part Number | N003 BKR8EIX |
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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