TWIN SPARK MODELS SAME AS OE 46521530

2.9 V6 510BHP

2.2 JTS

2.0

ALFA ROMEO 4C 1750 TBi SPARK PLUG

OE 55217232 68122874AA

4 REQUIRED

1.4 Turbo Models and MultiAir Turbos only 

3.0 & 3.2 Same as oe 60579903

0.9 TWIN AIR MODELS SAME AS OE 55242187

1.1 8V 1.2 8V

1750 TBI Engines

 2.2 JTS SAME AS OE 55182623

2.9 QUAD SAME AS OE 670050892