don't have time to find thread here is the part number
1l3z-6b209-ba

 

Where is the 9lb or 12lb stamped? I looked up that number on www.fordpartscheap.com and could not find it...

 

It is stamped on the arm. It's small.

If you look at the one installed on your truck, you sill have to move the I/C reserviour off to the side.
It is on the side that is facing the fan shroud. I used a little MIRROR and a flashlight to see it.
You can feel it with your finger if you rub the dirt off of it.

My stock one was stamped 9, my current one is 12.

 

Ok cool....so that 1L3Z-6B209-BA is the 12lb part number....I'll have to call Ford because I can't find it online at the Ford parts places...Thanks

 

Yes sir

 

Found it....43.31 thanks

 

I just got a new sc tensioner and the arm is stamped with an 11 not 12.