Have a 97 F150 4.2L and was going to change my spark plugs today. Went to local Ford dealer, asked for set new plugs and they had the number: SP-486 (AGSF42FM). I looked in owners manual and it lists: AWSF-42EE as the plug required.
Was I given the wrong plugs or did the numbers change over the years?

Thx in advance for any help

 

Numbers and the plug changed. You got the right ones

 

K, thx...I fig the numbers changed but I just wanted double check. I've nvr changed plugs in truck since I've owned and thought might be good idea.
Thx again

 

Make sure you torque em properly!!

 

If I found the right specs for the 97 4.2L F150, it lists:

84 in-lbs (7 ft-lbs) - 168 in-lbs (14 ft-lbs)

Are these correct?

 

From my understanding..28ftlbs..maybe wrong

 

I don'tthink the 4.2 v6 has issues with plugs. Thay do need to be tight though.