# Denso 3903

> All equivalents for the Denso 3903 spark plug: compatible references, technical specifications and where to buy.

## Technical information

- **Thread:** 14 mm
- **Reach:** 18.5–21.5 mm
- **Heat range:** Medium
- **Resistor:** no
- **Seat:** Flat (gasket)
- **Torque:** fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)

## 8 equivalents

- [Tacti V91102306](https://www.thesparktwin.com/en/tacti/v91102306/)
- [Tacti V91103064](https://www.thesparktwin.com/en/tacti/v91103064/)
- [Tacti V91105306](https://www.thesparktwin.com/en/tacti/v91105306/)
- [Mitsubishi MZ 602 033](https://www.thesparktwin.com/en/mitsubishi/mz-602-033/)
- [Mitsubishi MZ 602 061](https://www.thesparktwin.com/en/mitsubishi/mz-602-061/)
- [Beck Arnley 1765291](https://www.thesparktwin.com/en/beck-arnley/1765291/)
- [Mazda 1UD1 18 110](https://www.thesparktwin.com/en/mazda/1ud1-18-110/)
- [Mazda 1UN4 18 110](https://www.thesparktwin.com/en/mazda/1un4-18-110/)

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*Source : [Denso 3903](https://www.thesparktwin.com/en/denso/3903/) — TheSparkTwin*