www.Austin7Ulster.com › Champion RC9YC 14mm Spark Plug (For use with 2 piece alloy heads) Champion RC9YC 14mm Spark Plug (For use with 2 piece alloy heads) £3.75 14mm plug for use with 2 piece alloy heads. 14mm plug for use with 2 piece alloy heads. Add To Cart Added! You Might Also Like Starter Motor Brush Set 1930-39 £13.60 Spark Plug Brass Thumb Nuts (Priced Individually) Sale Price: £0.90 Original Price: £1.20 Sale SP On/Off Toggle switch £1.50 HT Ignition Lead / Cable £1.65 6V Ignition Bulb MES lamp fits Lucas Switch Panel £0.75