Genuine NGK BKR8EIX Iridium IX spark plugs, supplied as a set of four for the Lotus Exige S1 1.8 16V.
Verified vehicle fitment
- Lotus Exige S1 – 1.8 16V – 132 kW – from July 2000
NGK upgrade application: catalogue fitment identifies BKR8EIX as an advanced Iridium IX upgrade. Confirm the engine specification and required gap before installation.
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; DENSO IK24 / 5311. Cross-references are supplied for identification and must be checked against the exact engine application.
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