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  • M14x1,25, Wrench Width 20,8mm
  • Interference Suppressed / Long Thread
  • Similar to DENSO W27ESR / W27ESRU
  • Similar to BOSCH WR3CC
  • Similar to CHAMPION OE091 /QN2
  • Similar to CHAMPION QN2C / RN2 / RN2C


Thread type:M14x1,25
Length spark plug thread:19 mm
Thread spark plug:long
Wrench size:21 mm
Electrode material:Nickel
Electrode type:standard
Spark plug with terminal (grommet): 
Protective cap is screwable: 
heat rating Bosch:WR3CC
Heat rating Denso:W27ESRU
Heat rating Champion:RN2C
OEM numbers (comparison purposes)
Piaggio438075, AP8206915


B6ES - long reach / town and city use / for a standard engine.


B7ES - long reach / town and city use / for a standard engine.

B8ES - long reach / local and distance use / for a standard or midly tuned engine. 

B9ES - long reach / competition or distance travelling use / for a tuned engine. 

B10ES - long reach / competition or full race use / for a high tuned engine / sidecar use. 

Spark plugs with a 'BR' denomination have a built-in resistance and are designed for use with delicate electronic equipment (such as SIP rev counter / speedo units). 

Spark plugs with a 'HS' denomination are SHORT reach versions (usually utilised for early pre-S1 Lambretta models manufactured between 1947-'57).

Lambretta models that use a SHORT REACH spark plug are: A + B + C / LC + D / LD + E /F + Lambrettino 48.

Lambretta models that use a LONG REACH spark plug are: S1 + S2 + S3 + GP / DL + J (all versions) + Lui Vega Cometa + Serveta.

NGK copper core spark plugs deliver increased heat dissipation for more reliable starts and reduced risk of overheating.


Colder spark plugs are suitable for racing cylinders and use over long distances. In this context, the sound thermal output of heat to the cylinder head takes place, there is a risk of sooting, however.


Hotter spark plugs are used in sport and standard cylinders. The reach their operating temperature quickly but can also overheat.

Most spark plugs for scooters have a M14x1.25 SW 20.8 thread and are either long thread (19mm) or short thread (12.7mm).


Please note: putting a long thread spark plug in a short thread cylinder head will damage the piston.


Copper spark plugs are the most popular spark plugs on the market and are a useful tool in every day scooter life. Rapid operating temperature, constant performance, optimal reaction during changing driving conditions, for example town driving, and last but not least, fuel savings are their advantage.


The copper core of the middle electrode conducts the heat well and protects against thermal overload. Nickel-chrome-alloy protects the copper core against corrosion and guarantees high level protection against wear and tear and spark erosion.



    This is a resistor type spark plug that is needed for SIP Speedos.

    Fits the following vehicles :-

    Vespa PX 125 T5 VNX5T
    Moto Vespa) PX 125 T5 Sport Elestart Eng 108M
    Moto Vespa) PX 125 T5 Sport Engine 98M
    Vespa LX 50 2T 2007 ZAPC38101
    Vespa ET2 50 1997 ZAPC16000
    Vespa ET2 50 2002 ZAPC16000
    Vespa ET2 50 2002 ZAPC38100
    Vespa LX 50 2T 2005 ZAPC38101
    Vespa LX 50 Touring 2T 2010 ZAPC38101
    Vespa LX 50 2T 2010 ZAPC38101
    Vespa LX 50 2T 2006 ZAPC38101
    Vespa LX 50 2T 2009 ZAPC38101
    Vespa LX 50 2T 2008 ZAPC38101
    Vespa ET2 50 2001 ZAPC38100
    Vespa ET2 50 2001 ZAPC16000
    Vespa ET2 50 2000 ZAPC16000
    Vespa ET2 50 1998 ZAPC16000
    Vespa LX 50 2T 2004 ZAPC38101
    Vespa LX 50 Touring 2T 2011 ZAPC38101
    Vespa LX 50 2T 2012 ZAPC38101
    Vespa LX 50 Touring 2T 2010 ZAPC38104
    Vespa LXV 50 2T 2007 ZAPC38102
    Vespa Primavera 50 2T 2017 ZAPC53200
    Vespa LX 50 Touring 2T 2010 ZAPC38104
    Vespa Primavera 50 2T 2016 ZAPC53200
    Vespa LXV 50 2T 2008 ZAPC38102
    Vespa LX 50 2T 2005 ZAPC38400 25 km/h
    Vespa LXV 50 2T 2007 ZAPC38102 Navy
    Vespa LX 50 Touring 2T 2013 ZAPC38101
    Vespa LX 50 2T 2013 ZAPC38101
    Vespa LX 50 Touring 2T 2010 ZAPC38104
    Vespa LXV 50 2T 2009 ZAPC38102
    Vespa LX 50 Touring 2T 2010 ZAPC38104
    Vespa LXV 50 2T 2006 ZAPC38102
    Vespa S 50 2T 2012 ZAPC38103
    Vespa Sprint 50 2T 2014 ZAPC53201
    Vespa Sprint 50 2T 2017 ZAPC53201
    Vespa Sprint 50 Sport 2T 2016 ZAPC53201
    Vespa Sprint 50 Sport 2T 2017 ZAPC53201
    Vespa Sprint 50 2T 2015 ZAPC53201
    Vespa S 50 College 2T 2010 ZAPC38103
    Vespa S 50 2T 2007 ZAPC38103
    Vespa S 50 Sport 2T 2012 ZAPC38103
    Vespa S 50 2T 2010 ZAPC38103
    Vespa S 50 2T 2008 ZAPC38103
    Vespa LX 50 2-stroke 2011 ZAPC38101
    Vespa Primavera 50 2T 2014 ZAPC53200
    Vespa ET2 50 1999 ZAPC16000
    Vespa Primavera 50 2T 2013 ZAPC53200
    Vespa Sprint 50 2T 2016 ZAPC53201
    Vespa Sprint 50 Sport 2T 2015 ZAPC53201
    Vespa LX 50 Touring 2T 2012 ZAPC38101
    Vespa S 50 2T 2011 ZAPC38103

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