Plug Wires?
Cargo Master
Joined: Jul 2005
Posts: 2,309
Likes: 364
From: Kansas
I get the ones with the lifetime warranty from parts america around $60.00 i think. They replaced the last set no questions asked when it started missing
The original motorcraft lasted for 80,000...the first set of aftermarket lasted about 30,000 before I had to change them again.
The original motorcraft lasted for 80,000...the first set of aftermarket lasted about 30,000 before I had to change them again.
Senior User
Joined: Jan 2008
Posts: 174
Likes: 0
From: Western Pennsylvania
My dealer here in Pennsylvania wants $161.00 for plug wire set. They can keep them...autozone has a set of wires for $71.oo and they have a lifetime warranty on them.
Hope this answers your question
Later
Bowdog
Hope this answers your question
Later
Bowdog
Posting Guru
Joined: Oct 2005
Posts: 2,209
Likes: 1
From: Louisville, Kentucky
Your truck does not have spark plug wires. All 5.4L trucks have COPs(Coil On Plug). Just use Motorcraft spark plugs. This is an excellent thread on changing plugs. Good luck! 
https://www.ford-trucks.com/forums/1...ght=sparkplugs
https://www.ford-trucks.com/forums/1...ght=sparkplugs
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Post Fiend
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From: Saskatoon Saskatchewan
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Senior User
Joined: Sep 2006
Posts: 151
Likes: 0
I went with ford racing plugs from summit racing (on the web). They were cheaper on this upgraded motorcraft part than the standard motorcraft part at the LAPS... I originally replaced them with unknown aftermarket and the plug boot to wire interface was weak causing misfire after 20k miles. Definitely stick with motorcraft on this one.
Laughing Gas
Joined: Oct 2003
Posts: 967
Likes: 0
From: DC
Originally Posted by KingRanchMan02
Your truck does not have spark plug wires. All 5.4L trucks have COPs(Coil On Plug). Just use Motorcraft spark plugs. This is an excellent thread on changing plugs. Good luck!
Posting Guru
Joined: Oct 2005
Posts: 2,209
Likes: 1
From: Louisville, Kentucky
Originally Posted by typhus
Got OEM motorcraft wires on Amazon for $62, no tax, free shipping.
4.6
4.6
Sounds like a good deal. The point is though that jonrob doesn't have or need spark plug wires for his 03 5.4L F-150 since it doesn't have them.
Posting Guru
Joined: Feb 2007
Posts: 2,351
Likes: 8
jonrob would do well to heed KingRanchMan02 on this.
Pretty sure 97's introduced FORD's "coil-on-plug" design 5.4 & know for a fact '98 & up are COP. FORD advertised this "eliminates spark plug wires".
Originally Posted by KingRanchMan02
The point is though that jonrob doesn't have or need spark plug wires for his 03 5.4L F-150 since it doesn't have them.