which plugs for merc 200 year 2000

[indiana]

Hi,Am running on lpg and decided to change plugs...Has been running a bit poorly on lpg but fine on petrol.So worth a try but which plugs are the best
??
Jim

[junkcatcher]

Not enough info --- the 7 digit engine type code is needed it will be something like M111.945

I would suggest you just fit the recommended NKG plug for your vehicles exact engine type code but narrow the plug gap to 0.625mm to 0.7mm (0.025" to 0.028")

[indiana]

Eng No 11194522109268
Have looked through handbooks and cannot find the plug part number or make

[junkcatcher]

really not a good idea to post engine or vin numbers on the web

This site should help with iding the standard plug type http://www.benzworld.org/