Hi Has anyone had experience with this spark plug in their XKR? I have a 1999 XKR and looking for 1 range colder. Booklet says standard plug is NGK PFR6G13E. The NGK PFR7G-11S (7772) looks compatible being one step colder... Has anyone used other plugs one step cold? I'm in the UK.

Thanks

Dan

 

is it the AJ26.5 or AJ27

26 used the pfr6, 27 used pr5 and ifr5 stock

i use bkr6eix

 

AJ26S
So, not looking for the std one as I know it is the NGK PFR6G13E as per the handbook. Im looking for a colder spark plug as I have more boost than stock and enlarged throttle body with a couple of other mods.. So a colder spark plug than the stock one

 

try the bkr7eix or pfr7