06F150CFCT

Yeah SP-515's were on sale when i got them...orginally were 11.99 or something. Gotta pay to play I guess..haha

kylelaflamme

Dealer did mine at 100K and didnt break any.

Fx4-Michael

I'm at 73k miles and just bought my truck. Having the plugs done next week. I have a miss at 3000-3500 rpm under wide open throttle but goes away and runs fine when not flooring it. Hopefully it is the plugs. The check engine light blinks for 30 seconds if that and shuts off after wide open throttle so its a misfire, but because the cel goes away I don't know which cylinder. Debating on replacing the coils too, but we'll see what the plugs and fuel filter change..

crooks_87

Had mine changed at 79k and still broke 2 off....plug change and injector flush hit me for over $600......good luck

Reeds FX4

Did mine at 70k and all 8 broke. Age might have been a factor too.

KansasBob

me and a buddy did mine yesterday 93k, broke none about 2hr job... did fuel filter to broke clip "ford"part only they had to overnight it shes back up and running strong plugs torgued@26ft/lbs ford never called me back on specs.. hope they hold!