pfr6b-11 ok?? posted by ign 5 on July 25, 2011 at 07:43 PM
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I believe the 11 is an NA plug and the 11b is the TT plug, the difference being the length of the threaded part, the NA plug is too short and won't extend into a TTs combustion chamber, personally I always call IPP or SZ for plugs and know I get the right plug.