These are Accuspark AC9C Performance COLD RANGE Spark plugs for MGB all years 

AccuSpark 

plugs are copper core for a better spark 

Triple ground for a multiple spark paths and long life 

Titanium plated for lasting finish

The most overlooked item when tuning your engine 

Performance engines with big cams, bigger carbs, better exhaust will flow more air and burn more fuel

This will make  the internal temperatures of the engine hotter 

This will then require a plug that can dissipate the heat better to maintain correct plug tip temperature  to prevent pre-ignition 

Plugs should be regularly checked for condition

PRICED FOR SINGULAR PLUG

IMPORTANT POSTAGE INFORMATION Yodel upgrade next day postage is only available for Mainland England and Wales  and some of Scotland  For other areas,  If you wish more details please email prior to purchase.