# Bosch 4021

> Всички еквиваленти на запалителната свещ Bosch 4021: съвместими референции, технически характеристики и къде да купите.

## Техническа информация

- **Резба:** 14 mm
- **Дължина на резбата:** 18.5–21.5 mm
- **Топлинна характеристика:** Много топла
- **Резистор:** yes
- **Уплътнение:** Плоско (с уплътнение)
- **Затягащ момент:** fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)

## 11 еквивалента

- [Bosch WR9DP4](https://www.thesparktwin.com/bg/bosch/wr9dp4/)
- [Bosch WR9LP4](https://www.thesparktwin.com/bg/bosch/wr9lp4/)
- [Bosch WR9DPX4](https://www.thesparktwin.com/bg/bosch/wr9dpx4/)
- [Autolite AP66](https://www.thesparktwin.com/bg/autolite/ap66/)
- [Splitfire PP006F](https://www.thesparktwin.com/bg/splitfire/pp006f/)
- [Bosch 4120](https://www.thesparktwin.com/bg/bosch/4120/)
- [Bosch 4121](https://www.thesparktwin.com/bg/bosch/4121/)
- [Bosch 4137](https://www.thesparktwin.com/bg/bosch/4137/)
- [Bosch 4237](https://www.thesparktwin.com/bg/bosch/4237/)
- [Champion 3405](https://www.thesparktwin.com/bg/champion/3405/)
- [Denso 3230](https://www.thesparktwin.com/bg/denso/3230/)

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*Source : [Bosch 4021](https://www.thesparktwin.com/bg/bosch/4021/) — TheSparkTwin*