Not been on this forum for a long time. Noticed this thread. I work for Unipart and consulted NGK tech regarding the LPG version of this plug.
I was told that the main difference is a special coating on it to reduce corrosion caused by the LPG. Considering the price difference I decided that I could use two sets of standards for the price of one LPG set.
30K now on them with no problems.
NGK BKR6EIX or NGK BKR6EIX-LPG
Re: NGK BKR6EIX or NGK BKR6EIX-LPG
HI,LIKE TO ASKED THE PEOPLE WHO ARE USEING THE NGK BKR6E1X-LPG PLUG IF ITS STOCK/PART NUMBER 3356. THANKS JOEJOE 
