1.Rinse (constantly),
2.De-greaser (lots),
3.Long hair brush (elbow grease),
4.towel-off (for a detail look),
5.dressing (looks only),
If you're careful a pressure washer does well. Stay away from engine seems, electrical, etc.
Brakleen (green non-ox) will remove stuff the degreaser won't. If you're looking to have clean/new looking engine parts...
good luck,
j