This is the modern type thread and can be used with most modern plugs with M4 threads. I'm back on Tues.
Brass Spark Plug Cooling Fin, HT Terminal End & Thumbnut Vintage Motorcycle 3 Pc
LANCIA FULVIA 1300 SILICONE HT LEADS SPARK PLUG IGNITION 7mm MAG WIRE RED KIT
MX5 Magnecor 8mm Ignition HT Leads Spark Plug Wires Cables Mazda MX-5 Mk2.5 1.8
HT lead Spark plug boot 90 Degrees push fit boot and contact.
HT lead Spark Plug straight boot and contact
Ignition Coil, HT Leads & Spark Plugs Fits: Subaru Impreza WRX STi 96-98 22B RA
