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Spark plug -BOSCH -

3400002
€3.95 *

incl. VAT plus shipping costs

In stock: can be delivered or picked up in the store

Heat rating of Ignition spark:

P For this item you get fidelity point/s
Spark plugs differ in the following things: Thread diameter The usual threads are M10, M12...Continue reading

Description


Spark plugs differ in the following things:

Thread diameter
The usual threads are M10, M12 and M14. Classic vehicles usually have an M14 thread. 4-strokes and modern 2-strokes with injection use the smaller plugs with M10 or M12.

thread length
The common thread lengths are 19mm (long thread)and 12.7mm (short thread).

heat value
The heat value is decisive for the thermal fatigue strength of the spark plug and its self-cleaning effect. A distinction is therefore made between so-called cold and hot spark plugs.
A cold plug is for engines that develop a very high combustion chamber temperature, usually these are engines which, measured by their cubic capacity, have a lot of power. A hot candle, on the other hand, is used in production engines with low loads. This type of candle quickly reaches a high temperature, whereby the soot on the candle burns off well.
The temperature resistance is achieved by differently designed insulators. A cold candle can give off a lot of temperature via the cylinder head, and a cold candle can strongly prevent this. The heat value has nothing to do with the strength or efficiency of a spark plug. A cold candle in a cold (weak) engine becomes oily or sooty and can break without damaging the engine itself. A hot spark plug in a racing engine burns up and damages it, usually severely.
The heat value of a spark plug is not standardized. Each manufacturer has its own code here.

  • NGK from cold to hot = 10-9-8-7-6
  • Bosch from cold to hot = 2-3-4-5-6
  • DENSO from cold to hot = 37-34-31-27-24-22-20-16-14

Electrode material
Here copper, platinum, silver or iridium come to the electrode material br /> Here copper, platinum, silver or even iridium come to the electrode material
The most common is copper, followed by silver and platinum. Due to the high prices for the precious metals, the spark plugs are also correspondingly more expensive than their copper counterparts.
The material is ultimately almost only interesting for wear, only the extremely thin Iridium electrodes (Ø=0.6mm) have a higher ignition voltage, the spread of the flame front in the combustion chamber improves.


(machine-translated)
 
Reviews 22
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Ratings


11 Jan 2018

Gute Bosch Qualität

11 Jan 2018

Gute Qualität genau wie in der Beschreibung.

24 Oct 2016

Produkt wie beschrieben, top

16 Oct 2016

sehr gut

16 Oct 2016

gut

14 Oct 2016

Better than ***

29 Apr 2016

prima

16 Apr 2016

Tut was es soll

23 Mar 2016

Was soll man sagen? Funktioniert!!!

14 Mar 2016

Ottimo
Si
Per la mia vespa

26 Feb 2016

Gute Qualität!

26 Feb 2016

Gute Qualität!

26 Feb 2016

Gute Qualität!

17 Jan 2016

alles gut

21 Dec 2015

gutes product

7 Jul 2015

wie beschrieben

8 Jun 2015

Gute Zündkerze.

5 May 2015

alles bestens

26 Feb 2015

Mit der Bosch Zündkerze läuft meine 80 ziger Lusso am besten.

9 Nov 2014

Ich kann nicht sagen warum, aber mein Roller mag diese Zündkerze gar nicht! Es kommt immer wieder zu Aussetzern und Startschwierigkeiten. Das ist mit der NGK nicht der Fall

5 Nov 2014

Gute Zündkerze, hat sich bewährt.

5 Nov 2014

Erstklassige Ware zum fairen Preis mit sehr schneller Lieferung.
Daher für Hobbyschrauber super geeignet.

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