Which is the 1 Spark plug on a 2.8 v6 engine?

There's no single answer to which spark plug is number "1" on a 2.8L V6 engine. The firing order and the numbering system for spark plugs varies significantly depending on the *manufacturer* and even the *year* of the vehicle.

To find out which spark plug is number 1, you must consult your vehicle's repair manual or a reliable online resource specific to your engine's make, model, and year. The information will usually be found in a diagram showing the engine's layout and firing order.