|
So I did some number deciphering. It appears the original Bosch Spark Plug ZMR5TPP330 comes in two varieties. There is a second Bosch ZR5TPP330. The difference in the two plugs appear to be cost and a "M" on the ceramic. The other difference I found is that the original plug is not iridium. It is a platinum plug. It seems that the later ZR5TPP330 also costs 1/2 of the original ($10 a plug)....just some FYI
|