2006 f150 spark plug #1 5.4 engine

On most engines #1 is always the one in front, usually on the left bank. The right bank will actually be set back about and inch.
 
Starting at the front, passenger side, the cylinder closest to the radiator is #1. The cylinder directly behind it is #2, then #3, and finally #4 is located against the passenger side firewall. From the front, driver side, the cylinder closest to the radiator is #5
 
Here you go
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#1 is the first one in the firing order. Look at both heads and see the lead heAd and that is your answer.
 
No,,, when u view an engine u always stand behind it looking at the flywheel. Left is left. Right is right
 

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