does anyone know the firing order for the '03 R/T 3.0L. need to know the
# 1 piston to change out my O-2 sensor.

 

i believe cylinder 1 is the back left when looking at the engine. Closer to the firewall.

 

thanx for reply ... now is this when i'm looking at the engine from the front of the car, or standing on the pass. side looking at it ?

 

From the front of the car. As if you just opened the hood and are looking at it. If you want to know the exact firing order, pull out the battery and unbolt the battery tray. You will see the distributor cap, and it is numbered. Just follow the wires. I cant find a diagram in the service manual.