Best Spark Plug

[Igors92]

I've got a 03 GT and I would like to replace the factory plugs but I'm not sure what plug would be the best one to replace it with. With so many choices out there I would just like some opinions as to the best plug for everyday driving.

 

[Kilgore Trout]

Motorcraft AGSF-32C gapped @ .054

 

[CobraRed_96_GT]

Motorcraft AGSF-32C gapped @ .054

he speaks the truth. FYI an AWSF will be recomended as a stock replacement, but the AGSF has longer threads to help prevent spark plug blow out (of the head)

 

[rookie]

he speaks the truth. FYI an AWSF will be recomended as a stock replacement, but the AGSF has longer threads to help prevent spark plug blow out (of the head)

CobraRed,

Would you recommend the same based on the minor mods I have (mentioned on the thread I started for a recommend. on a turbo)?

 

[DBMSTNG]

CobraRed,

Would you recommend the same based on the minor mods I have (mentioned on the thread I started for a recommend. on a turbo)?

with minor mods, use the same plugs. with a turbo, you want 2 steps colder.

 

[99MustangGTman]

NGK TR6 gapped @ .035, cheap and works great

 

[four six]

autolights

 

[CobraRed_96_GT]

CobraRed,

Would you recommend the same based on the minor mods I have (mentioned on the thread I started for a recommend. on a turbo)?

yes, as stated before you will need to go 2 steps cooler with a blown engine, turbo or S/C. Also you will need to have a smaller gap to prevent spark blow out (boost blowing out the spark leaving unburnt fuel and carbon). So I guess i'd say an AGSF-12C at .028-.033

 

[40th GT]

I have the original AWSF-32PM (platinum version of the Motorcraft plugs) and they've been great. I'm sure the copper version will perform better, but so far these OEM Motorcraft plugs are good.

http://www.bullittarchive.com/WebHelp/Mustang_Maintenance/Spark_Plug_Change.htm
This article lists the different types of plugs from Motorcraft.

 

[01Steeda]

sorry, thought this was the thread about the blown motor. disregard

 

[Mustang225]

Any concerns when changing the plugs (ie:location of plugs)?

 

[Kilgore Trout]

Any concerns when changing the plugs (ie:location of plugs)?

There are many concerns when changing plugs and many little tricks to make the job better. I have posted them too many times to do so again...

 

[281CI96Coupe]

is this only for new edges or this is exactly for sn95's too?

 

[RandyStinchcomb]

So I guess i'd say an AGSF-12C at .028-.033

Correction: there is NO such Sparkplug # in Motorcraft as a AGSF-12C, now there is a AWSFA-12C which is 2 steps colder but is ONLY aval in a 1/2 thread (AW) design and since this plug was originally designed for the 1996 to 1998 3.0 "Flex Fuel" Taurus, I doubt if FoMoCo will ever make it a full thread design "AG" series

 

[Shiroelex]

autolights

Motorcraft plugs are Autolites!

Correction: there is NO such Sparkplug # in Motorcraft as a AGSF-12C, now there is a AWSFA-12C which is 2 steps colder but is ONLY aval in a 1/2 thread (AW) design and since this plug was originally designed for the 1996 to 1998 3.0 "Flex Fuel" Taurus, I doubt if FoMoCo will ever make it a full thread design "AG" series

That explains alot... Do you think I could find an Autolite alternative for full length thread 12C's, or are we stuck with NGK?

 

[four six]

Motorcraft plugs are Autolites!

I know.

 

[Shiroelex]

I know.

Heh, sorry. I just like pointing that out, because Motorcrafts are sometimes cheaper than Autolites, and it's a good bargain for sweet plugs. Motorcraft oil filters are actually Purolators, and they are one of Purolator's nicer designs. The Motorcraft filters are actually way cheaper than what Purolator charges for them.

 

[thomas91169]

NGK TR6 gapped @ .035, cheap and works great

+1

 

[CobraRed_96_GT]

Correction: there is NO such Sparkplug # in Motorcraft as a AGSF-12C, now there is a AWSFA-12C which is 2 steps colder but is ONLY aval in a 1/2 thread (AW) design and since this plug was originally designed for the 1996 to 1998 3.0 "Flex Fuel" Taurus, I doubt if FoMoCo will ever make it a full thread design "AG" series

Yeah, i didn't look up the part, i was speculating - my bad.

is this only for new edges or this is exactly for sn95's too?

I use AGSF-32C's, this is a good spark plug for either models