2004 - 2008 F-150

wich boots?

 
  #1  
Old 03-19-2019, 10:01 AM
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wich boots?

changing COP's on my 2005 F150 with 3v 5.4, my searches say brown boots were only 2008 and up but mine has the brown boots. i have put the one piece plugs in but the boots/coils have never been changed. do i order the brown or black booted coils for these one piece motorcraft plugs
 
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Old 03-19-2019, 10:41 AM
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What part number Motorcraft plugs did you put in?
 
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Old 03-19-2019, 04:21 PM
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I believe they were the sp546, it was a year ago. Pulled one, it was brown so i just ordered the brown boots.
 
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Old 03-19-2019, 06:17 PM
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Nope, those use the black boots. DG511. Brown boots are for mid-2008 and newer with SP-509 plugs, DG521.

The SP546 are still 2 piece, they are more resistant to breakage.

The only reason I asked about the plugs is to eliminate the possibility that the heads or engine were not original.

SP546:



SP509:

 
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Old 03-19-2019, 09:15 PM
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Truck all original, i bought from original owner, wich i knew very well with 58,000 miles, he had never done anyfhing but oil and filter changes. I put the plugs in 1 year ago at 152,000, never paid attention to boot colors. Had a COP on number 7 going bad, was going to order all new set and noticed black and brown available. Pulled number 7, it was brown so ordered brown boot set from D.U.I
 
  #6  
Old 03-19-2019, 09:18 PM
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So 509 is one piece. Does it fit these heads, and does it still use the brown boots because i was positive i got 1 piece plugs since they were now available a year ago, but boots have never been changed on the truck before.
 

Last edited by balistic; 03-19-2019 at 09:22 PM.
  #7  
Old 03-19-2019, 10:42 PM
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Look at the pictures I posted. SP509 will NOT fit in 2005 heads. SP546 are NOT 1 piece plugs, they are improved and reinforced 2 piece. The only 1 piece plugs for 2005 heads are Champion, Brisk, or E3, none of which I'd recommend.

2004 - mid 2008: SP546 with DG511 cops.
Mid-2008 - end of production: SP-509 with DG521 cops.
 
 


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