Genuine NGK BKR8EIX Iridium IX spark plugs, supplied as a set of four for appropriately tuned Nissan Silvia and 180SX SR20 engines.
Vehicle fitment
- Nissan 180SX RPS13 – SR20DET
- Nissan Silvia S13 – SR20DE / SR20DET
- Nissan Silvia S14 – SR20DE / SR20DET
- Nissan Silvia S15 – SR20DE / SR20DET
Performance application: this colder heat-range 8 plug should only be used where specified for the engine tune, boost and hardware. Confirm the required electrode gap with your tuner.
Product specifications
- Brand: NGK
- Part number / MPN: BKR8EIX
- NGK stock number: 2668
- Series: Iridium IX
- Quantity: 4 spark plugs
- Heat range: 8
- Thread diameter: 14 mm
- Thread reach: 19 mm
- Hex size: 16 mm (5/8 inch)
- Centre electrode: 0.6 mm iridium
- Resistor type: Yes
Reference numbers
NGK BKR8EIX / 2668; NISMO 22401-RN010-8; DENSO IK24 / 5311. Cross-references are for identification and do not replace an engine-specific application check.
Before ordering
Check the engine code and the plug recommendation for the vehicle or engine tune. Do not order solely by model or registration, because modified engines may require a different heat range or electrode gap.
Delivery & returns
- Free UK delivery with an estimated 2–3 working-day service
- 30-day returns, subject to the item being returned in its original condition