BMW 3-Series (E90 E92) Forum - View Single Post

princelybug · 02-09-2015, 09:26 AM

After doing some research, it looks like the heat range (3rd digit of part number-5) is the same for both plugs.

Does anybody have any insight on what the "-S" and "R6" or "R8" in the part numbers represent?

02-09-2015, 09:26 AM	#2
princelybug Second Lieutenant 60 Rep 227 Posts Drives: '11 LBM E90 335i M-Sport Join Date: Nov 2014 Location: Orange, CA iTrader: (6)	After doing some research, it looks like the heat range (3rd digit of part number-5) is the same for both plugs. Does anybody have any insight on what the "-S" and "R6" or "R8" in the part numbers represent?
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