Sp 542

[Higgs Boson]

the 542s may be different from 2017 plugs but they were identical to my 2018 plugs, which were also not the plugs the threads stated were in the truck stock.

i think ford made a change from 17 to 18. i do agree with the benefits of a colder plug when needed, but in my experience with my truck, the 542s will not benefit.

i measure spark advance and retard, knock, etc etc and they provided no benefit. my truck has adapters, downpipes, tune, etc.

placebo, at least for an 18, I can't speak for a 17.

 

[RaptorFlipper]

That is interesting Higgs. There are quite few guys on here who swear by them. My mechanic thought they were better as well. I am only saying what he said about them. Maybe Ford did make a switch this year. Let me go see what was in mine stock.

 

[Onemoosehorn]

Sp 542’s made a big difference in my 18 as far as idling. Little better pull throughout boost also. I can tell a difference. But my 18 also had SP 527’s from factory, according to the part number, for some reason.

 

[RaptorFlipper]

Yes,

I am trying to find out what mine had from Ford. I replaced immediately. Ill keep you posted.

 

[TXRaptor]

Yes,

I am trying to find out what mine had from Ford. I replaced immediately. Ill keep you posted.

My 2018 had the following plugs:

CYFS12PCT

I swapped them at 2000 miles. I was not having any of the problems others reported, but I wanted to avoid issues.

Where do you find the translation from the part on the plug to the type?

 

[bo1966]

Just like changing the oil so early. There is no point to it.

Change your oil when you want. I'll do the same[COLOR="Red"[COLOR="Red"]

---------- Post added at 09:34 PM ---------- Previous post was at 09:33 PM ----------[/SIZE

---------- Post added at 09:37 PM ---------- Previous post was at 09:34 PM ----------

Thank you for explaining it. It is appreciated. Also, thank you for not just making comments that don't address or answer the original questions

 

[Onemoosehorn]

My 2018 had the following plugs:

CYFS12PCT

I swapped them at 2000 miles. I was not having any of the problems others reported, but I wanted to avoid issues.

Where do you find the translation from the part on the plug to the type?

I just did a search online for the part number. A dealer I called had no idea the “SP” equivalent for the part number. I believe that’s the same plug I had. That number was the 527, from what I could find. I could be wrong though.

 

[NASSTY]

My 2018 had the following plugs:

CYFS12PCT

I swapped them at 2000 miles. I was not having any of the problems others reported, but I wanted to avoid issues.

Where do you find the translation from the part on the plug to the type?

My 2017 came with CYFS-12Y-PCT. I replaced them with SP 550 which also have part# CYFS-12Y-PCT on them. I ran the part# for the hell of it and that # comes up as SP 550 and also says Superseded Part Number SP-527. So it appears that SP 550 and SP 527 are the same.

 

[Onemoosehorn]

My 2017 came with CYFS-12Y-PCT. I replaced them with SP 550 which also have part# CYFS-12Y-PCT on them. I ran the part# for the hell of it and that # comes up as SP 550 and also says Superseded Part Number SP-527. So it appears that SP 550 and SP 527 are the same.

Thanks.

 

[RaptorFlipper]

Ok. My 18 came with Motorcraft SP534 or CYFS-12Y-T3. I replaced with higher boost plug SP542 OR CYFS-092-YPT. Pre-gapped at 025-030. I simply went with what my guy suggested. All he does is work on race cars and trucks. The truck runs awesome! Hope this info helps.