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EXACT Motorcraft Spark Plug

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Old 07-03-2011, 02:18 PM
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03gt04mach1
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Default EXACT Motorcraft Spark Plug

Since the '03 GT is getting to be 9 years old, I was thinking of changing the Spark Plugs. It still runs great. I'm getting worried that the plugs might need to be changed being in there since new. I was wondering what the EXACT Motorcraft Part # is. Why go to something different when the original part has been so faithful. I'm not sure if the # is SP 413 or SP 493 or another part #? I don't want to pull a plug to check. I figure it might be easier this way. Thank You.
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Old 07-03-2011, 05:08 PM
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Repzard
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SP-432 if not mistaken
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Old 07-04-2011, 12:14 AM
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Boris91
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AWSF-32 is what the manual for the 2001 4.6 shows for me. I pulled those today and according to Advance Auto Parts those are discontinued. I replaced them with NGK TR55's based on recommendations.
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Old 07-04-2011, 06:17 AM
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uberstang1
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be carefully during installation, those heads are known to strip and blow out plugs.
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Old 07-04-2011, 06:22 AM
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MustangMan00
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go with NGK TR55 part number 3951 gap @ .054
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Old 07-04-2011, 10:05 AM
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03gt04mach1
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Thanks guys. Yeah, I know about those head threads. 14lbs of torque is plenty. I still want to go with Motorcraft though. I saw SP 432s on this thread which are discontinued. That is right with SP 433 which I thought were for '03-'04 Mach1's? Don't think the 433 plugs work work the GT though.
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Old 07-04-2011, 10:17 AM
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i vote NGK TR-6 #4177...but hey its your car
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Old 07-04-2011, 12:55 PM
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I feel the inexpensive stock Motorcraft replacements made my car run stronger and better than some of those fancy 3 prong style fancy plugs. For a car in stock or close to stock configuration I think Ford got it right. After all they built the car and know a little more than we do sometimes I forgot the number but i could look it up.
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Old 07-04-2011, 01:07 PM
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The number i got from the motorcraft catalog and my owners manual is now SP-493 for my sohc v8 in my GT.
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Old 07-04-2011, 01:30 PM
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I run autolites lmao
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