Call any dealer. Look one up and call. Plugs for a COP 5.7 Hemi or just spend half that amount of money and get some Autolite XP5325 Irdiumns.

 

Agree with Dirty Dog on plug choice. I had a 1998 Ram 5.9 litre(360c.i.) for 15 years and platinum plugs are great for a short time but get worst as time goes on. The champion truck plugs were great in the truck and at the end the standard NGK spark plugs with the v-groove worked really well. In the second generation I would use NGK's again. I only have a few thousand miles on my 2012, so will keep my eyes open on what is recommended and what works the best.

 

He dosen't know what he's going on about with plugs.