NGK RE9B-T Spark Plug – Stock No. 6701
The NGK RE9B-T is a cold heat-range performance spark plug designed for high-load, high-temperature engines. It delivers a stable spark under boost and at high rpm, helping reduce misfire and maintain clean combustion. A built-in resistor helps cut electrical noise, keeping ECU signals clean.
This plug suits tuned and motorsport applications where a colder plug is required to manage combustion heat. Use the vehicle lookup or check the Vehicle Fitment tab to confirm it matches your engine’s thread, reach, seat type, and heat range.
- Cold heat range for high-output and track use
- Strong ignition stability under load and at high rpm
- Resistor design for reduced electrical interference
Important: Only install if the thread size, reach, seat type, and heat range match your OE specification. Always set the plug gap to the vehicle manufacturer’s spec.
| Part Number | RE9B-T |
| NGK Stock Number | 6701 |
| Category | 686 – Spark Plug |
| GTIN | 087295167014 |
| Heat Range | 9 (cold – for high temperature operation) |
| Resistor | Yes |
| Electrode | Fine wire, precious metal centre electrode |
| Gap | Pre-set – adjust to OE spec if required |
| Intended Use | Performance/tuned engines and motorsport |
The price displayed is for a single plug, please add the desired amount to your basket.


