Exactly,what part,do Catholics claim is infallible in their religion?

The Holy Sacraments are at the heart of the Roman Catholic perspective and belief. The body and blood of Jesus Christ our Savior, ped from Him to us. I see so much opposition to Roman Catholicism, it is true the Catholic church has suffered a crucifixion, but she will be restored. The 'red smoke' entered the Vatican in the 1960's. Jesus the lamb, will destroy the stronghold of satan. God bless.