Spark Plug Replacement

[StangVertGT]

I have a 2002 Mustang GT 4.6L and I use it as a daily driver. I'm replacing the spark plugs and would like to know what kind to buy.

Thanks for your help!

 

[trinity_gt]

Go to the Ford dealership parts counter. Best plugs for a stock engine.

 

[StangVertGT]

Go to the Ford dealership parts counter. Best plugs for a stock engine.

Thanks but that's what I was trying to avoid doing, that's why I asked on here.

 

[trinity_gt]

Thanks but that's what I was trying to avoid doing...

Why?

 

[StangVertGT]

Why?

Because they always want stock, I want performance and quality.

 

[trinity_gt]

You'll get the most performance and quality out of OEM parts. If you were boosted or spraying nitrous I'd recommend an NGK TR6 (one range cooler than stock) but for a normally-aspirated engine you'd be risking fouling with a cooler plug.

What quality shortcomings are you thinking of with OE stuff?

How much of a performance gain do you expect with non-OE plugs and by what mechanism?

 

[StangVertGT]

You'll get the most performance and quality out of OEM parts. If you were boosted or spraying nitrous I'd recommend an NGK TR6 (one range cooler than stock) but for a normally-aspirated engine you'd be risking fouling with a cooler plug.

What quality shortcomings are you thinking of with OE stuff?

How much of a performance gain do you expect with non-OE plugs and by what mechanism?

I just assumed aftermarket was better quality than oem that's all. Guess I was wrong. I ordered the motocraft SP493 on eBay. I was told that's oem and best option. Why does American Muscle promote NGK so much then and not motocraft?

 

[Deleted member 38176]

Because they always want stock, I want performance and quality.

You don't get ANY performance out of any of the different spark plugs, they mean NOTHING. Spark plugs are an after-thought, they mean absolutely nothing. Get whatever is cheaper. I got OE Motorcraft plugs off American Muscle for cheap. Don't be a ricer and thing plugs are important.

 

[StangVertGT]

You don't get ANY performance out of any of the different spark plugs, they mean NOTHING. Spark plugs are an after-thought, they mean absolutely nothing. Get whatever is cheaper. I got OE Motorcraft plugs off American Muscle for cheap. Don't be a ricer and thing plugs are important.

No, No, I'm not. It states on American Muscle under NGK it says performance. That's why I thought it did. So obviously I want the best for my car at a price I can afford. So if there's better performance ones, then I wanted them. You know?

 

[Team Ford]

Heres a link to the Motorcraft Standard service plug.

SP-493

 

[StangVertGT]

Heres a link to the Motorcraft Standard service plug.

SP-493

Thanks. Already ordered those from eBay for $24 for 8

 

[flstang65]

OE Motorcraft or Autolite ONLY

 

[JJ Glo]

I replaced mine today with motorcraft sp-493s from Autozone. Even though they're OEM, check the gap. About 5 of them had about a .58-.59 gap. I set them to about. 54-55

 

[fordx316]

As far as performance gains.... plugs dont do anything, cold air intake doesn't do anything, stickers and decals don't do anything (unless they're OEM SVT cobra emblems, those add a few horses) If you want to go faster buy some heads cams & intake

 

[fordx316]

as far as maintenance OEM > AFTERMARKET EVERY SINGLE TIME

 

[Mustang5L5]

Because they always want stock, I want performance and quality.

Don't fall for the marketing hype. The OEM plugs are the best choice here for plugs and a lot of other items