2017 F250 6.2L 4x2

My truck just hit 100k miles, and I'm looking to change out the spark plugs, as per the maintenance schedule. Everything works great, I've had no issues with misfiring or engine performance, this is entirely preventative.

The shop wants more than $1000 to do the job, and after some research it seems like something that I can do pretty easily on my own. With a set of 16 plugs costing ~$100 it seems worth it, even if I have to buy some specific sockets and extenders.

While I'm working on this, it seems like it might be worth changing out the coils and wires, since I'm in there anyways, and it'll be easier to do them now instead of later - again, entirely preventative.

But here is the insanity - in general I prefer to get Motorcraft parts whenever possible, but all of the prices I can find for Motorcraft coils are in the $150-$190 each (!) range. I can't spend $1500+ on coils for this vehicle, that seems like insanity. There are a bunch of aftermarket parts in the $100-$200 range for a full set of 8, and my question is, what gives?

Is this a COVID-related supply disruption? Are the Motorcraft parts really 10x better than the aftermarket stuff? Will the cheaper coils destroy my engine? What on earth is going on here? What do all of you recommend? I was looking at something like this, but now I'm worried about how much cheaper they are over the OEM ones. What should I do?

 

Hmmm. At that price, you can be pretty sure they are made of Chinesium. I wondered what ISO 9001 and IATF 16494 standards were. Pretty meaningless. It's a QC self inspection standard. It doesn't mean the parts aren't crap or that they are made from quality components. It just means they screwed them together according to their standard. Like instead of a connector, they put a frog in there.

 

We use Echlin brand from NAPA at $80 per coil, OEM is often 2x more $, just depends on the part. Beware $200 for a set of 8.
I wouldn't change coils at 100K, we generally start having Ford coil problems around the 200-250K mile mark.

 

I wouldn't change them unless you have an issue. I would have a couple handy as you will need some eventually and may find one that's nasty when you do the plugs. I would trust MilesMac and get some Echlins, he has a nice truck..

 

Agree with what others have posted. No need to replace coils at such a low mileage. The great majority of Ford gas engines ive had easily made it past 300k on the original Motorcraft coils.

The real question is how long are you going to keep this truck? if your trading it in before 200k dont even waste your money doing coils.

 

Change the plugs, skip the coils.

 

If you go this route clean the corrosion out of all the ports on the coils while you are in there.

 

Change the wires & plugs. Change coils as needed

 

when did changing wires every 4 or 5 yrs become a thing ? hasnt been necesarrity on any vehicle ive ever had. hek im still on 20yo coils and wires on both my toyotas. unless the rubber is poor qaulity and disintegrates then whats the point

 

Another perspective:

https://www.ford-trucks.com/forums/1...belt-cost.html

 

Not exactly same, but I put 160K on a 2004 F-150 5.4 and only had to replace one coil pack over the life of the truck. Traded it in last year. Same - do the plugs and follow any torque specs to the letter. My old 5.4L has the "two piece" plug problem - never bothered to change them. The shop guys I know said fergetabout it until at least 200K and you'll probably trade the truck before then anyway. Yep.