G 01 Auto linea 1600 heads

[bac2ba6]

Hi there anyone running these heads ? if so could you tell what length plugs your running as not 100% convinced i have the right length plugs in them .
Thanks

 

[bac2ba6]

Meant to say the serial number starts with 040

 

[Slammed]

If they're 040 heads they're a standard plug I thought

 

[bac2ba6]

Thanks for the reply , after a bit of investigation there Brazilian heads , and ive counted the threads in the head with the aid of a bent piece of wire and they match the threads on the plugs so query solved standard short plugs