I know that the 2009 - 2012 5.7L HEMI does not like IRIDIUM plugs
NGK makes the plugs that are in the Parts Dept.
NGK Standard LZFR5C-11
Laser Platinum PLZFR5B13EG * ( the platinums have been know to melt the coils )
and gap to .040" (1 mm) every 30.000 miles (50.000 km).
Ram 1500 SLT Quad cab, 5.7 HEMI(R) MDS VCT, 5 speed auto 545RFE, 3.55 differential gears, 18" Magnaflow muffler, EGR bug deflector, Bushwacker fender flares, customized Nfab nerf bars, CB radio, Autonet wi-fi router, custom soft tonneau cover, Line_X bedliner, DEBO Step, build date 10/15/08 a Wednesday
Last edited by GTyankee; 06-02-2012 at 06:29 PM.