10SEC93GT

Im wondering if it would be a good idea to go ahead and change the plugs with just 45k on clock and which ones to use. I was looking at these from summit but wanna stay stock and DO NOT wanna replace with another plug that im gonna have problems with removing later on.

http://www.summitracing.com/parts/FRM-HT1/

KidCobra97

I changed my plugs out at 49K.....used Motorcraft SP-515
changed them out in Jan and no issues at all

s_vares

HT1 is a good plug, these trucks run nice on these.
Same as the revised Motorcraft plug (takes more to break them, so future plug changes will b ok)

picaflor

i changed mine around that mileage and still broke some of the sparkplugs.
i installed champions, i just didnt want to deal with broken sparkplugs again.

Joshg

I changed mine at 35k. I put the motor crafts back in but used antisieze to fix the problem so it won't be a problem in the future. If I was u id change them now so that u wouldn't have any break (or u shouldn't if done right)

allinon72

I'd replace them at 1 mile.

'05 F-150

same here get them replaced and i would stay with motorcraft

Pity7700

stick with motorcraft. i changed mine on my 02 at around 80k. i beleive thats the recommended swap out mileage but it wont hurt to do it before! if anything doing em earlier will make it an easier job, plugs should pop right out!

10SEC93GT

Ive always run autolite, even on my race car so I was just looking into these and would think they are the same as motorcraft as both are ford

s_vares

Yep, they are the same-ish
cosmetic is the only difference.