I've just removed spark plugs from my 95 WRX which was fitted with NGK PFR6G plugs.

However the new ones I have are NGK PFR6B's. Apart from the obvious letter, what are the differences between the two ?? Will the 6B plug be OK to use.

Any urgent advise would be much appreciated.

 

I think its ok guys.

Just checked NGK's site and found this chart

Would appear to be OK to use these.

If not please let me know ASAP.

Ta

 

Oh what an easy job that was, 40 mins from removing air filter & water bottle, removing old & replacing new plugs then re-fitting the filter & washer bottle. Don't ever be scared to trying that job yourself.

Just away to test car starts and runs OK.

 

Just to reassure you the plug code you have is the new NGK code..

Rob

 

Cheers Rob,

I did assume that with the table I referred too above. Plugs are in and car is running well.