# NGK FR4

> All equivalents for the NGK FR4 spark plug: compatible references, technical specifications and where to buy.

## Technical information

- **Thread:** 14 mm
- **Reach:** 19.0 mm
- **Heat range:** Hot
- **Resistor:** yes
- **Seat:** Flat (gasket)
- **Torque:** fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)

## 8 equivalents

- [Champion RC12YC](https://www.thesparktwin.com/en/champion/rc12yc/)
- [Denso K16PR-U](https://www.thesparktwin.com/en/denso/k16pr-u/)
- [Denso IK16](https://www.thesparktwin.com/en/denso/ik16/)
- [Denso VK16](https://www.thesparktwin.com/en/denso/vk16/)
- [Torch K4RF2](https://www.thesparktwin.com/en/torch/k4rf2/)
- [ACDelco 41-603](https://www.thesparktwin.com/en/acdelco/41-603/)
- [ACDelco 41-610](https://www.thesparktwin.com/en/acdelco/41-610/)
- [ACDelco 41-628](https://www.thesparktwin.com/en/acdelco/41-628/)

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*Source : [NGK FR4](https://www.thesparktwin.com/en/ngk/fr4/) — TheSparkTwin*