I would like to replace the spark plugs in my 2017 Cruze LT HB with a colder heat range iridium plug. Rock Auto shows the following but I can't seem to find any info on the differences. I would appreciate any help.
41-151, 41-153, 41-156
bkr8eix, 8 heat range
OEM was 7 heat range, bkr7e
The Cruze originally had 6 heat range plugs, this was changed to 7...
The 2017 an possibly 2016 Cruze uses a different plug than previously it is a very long reach the OE plugs have a 14mm hex and a taper seat instead of a gasket. The BKR8EIX plugs I bought are very different.
I wanted a colder plug with a slightly smaller gap as I am planning on running the BNR tune with a lead foot :-)