So you have read all the information you can on the CP4 and the havoc it can create if/when it goes out. Some trucks last forever without any intervention, some 67k (mine).

You read the experiences of people having to fight and prove they did not use crap fuel or put DEF/Gas in their tank.

Dealerships denying warranty and handing you the bill north of $14,000 for the repair.

Ford/Bosch refuse to address the issue so thanks to the aftermarket we have options.

My personal belief is the DCR replacement pump by S&S Diesel is the ultimate answer, but initial outlay cost plus installation may be a big bite for the what if!

The DPK (Disaster Prevention Kit) comes in a few flavors. I am speaking about the S&S Diesel kit as this is the only one I have personal experience with. I have personally spoken with them and appreciate an American company with American made parts.

Backstory:

My CP4 departed this earth after 67k miles. I am OCD on fuel and filters. I could not get a local dealer appointment just for diagnosis for several weeks. We had a cross country trip already planned so my son hooked up my gooseneck flat deck trailer and came and got me. We did a full turn around trip (CA-TN-CA) in 77 hours. Do not recommend this. It’s a long trip. Anyway I had previously contacted my “Home” dealership Monarch Ford Exeter CA. And they said bring it in.

Within a day after unloading it, the Service Manager called and told me what I knew. CP4 went out. Then…. ”it’s covered under diesel warranty”.

I was fully prepared for the documentation fight.

But I was prepared for the just in case. I had a DCR in the cart ready to buy. But if it was to be covered I had the DPK ready as well.

Fast forward, the whole family got DPK for Christmas (3 trucks). I also installed one on a family friend's 19 350 with 119k miles on it.

While on a visit in March 24 my friends truck died on the freeway. We loaded him on a trailer and got him home. I diagnosed the truck. Crank but no start 216psi fuel pressure to start (commanded 4200) P087 DTC (low fuel pressure). Tank pump checked ok. Pulled the tank filter clean and 2 quarts of fuel also clean.

Pulled the DPK filter

Glitter (photo was out of focus)

Drained DPK filter


Glitter

Cut the filter apart





You guessed it. GLITTER

I did not have time to get into the rest of the fuel system yet, but I am expecting the DPK saved the reset of the fuel system.

I will be installing a DCR and retaining the DPK “return line” filter as my friend wants it.

So a very long post for the short answer is the cost of a DPK worth it.

I will say yes most definitely.

I will update this post with relative information on the condition of the fuel system as I take it apart.



ZooDad

 

Reserved for follow up

ZooDad

 

Absolutely worth it

Turns the situation into something much more simple than without it. And at $400 is even more worth it

Such a simple preventative measure to take to enjoy the power of the 6.7

 

These CP4's are a total crap shoot. The DPK buys some piece of mind, but if the CP4 takes a crap, you'll still be dealing with putting in a new pump. I have two 22's and am planning on putting DCR's in
both as soon as I have a place to do the work. It'll suck laying out over $4k but it would suck much worse to break down in the middle of no where. Glad yours was covered under warranty!

 

DPK saves the post pump fuel system, and is fine if your truck is out of engine warranty, if not putting it on will void the fuel system warranty.

As to warranty denials, when mine went belly up, diesel care extended warranty covered 100%, no deductible, plus paid my expense for motel and rental car.
Dealer doing repair told Ford warranty there was no trace of fuel contamination and zero rust, warranty approved immediately.
I have almost 50k miles of warranty left, once that runs out I will likely do the DCR pump, but won't do the DPK while there is warranty coverage in effect.
I have also been adding Opti-Lube XL fuel lubricant since the new pump install, hoping it helps.

 

I too have alot of warranty left otherwise it would be the DCR immediately

 

I have seen mentioned on various forums that some people have gotten their dealership to install and warranty a DPK - but I have seen no details on what secret squirrel passphrase you would need to use to get this accomplished...

Coming from a 4th gen Ram, the CP4 is my biggest concern with a Ford.

 

I've posted on this forum that I know an individual who had DPK's installed at a dealership on 2 Super Duty's. Prior to the install he was told it would not void any warranty. However, he never had to test that, so who really knows how it would have played out if a fuel system failure ever did happen.

I haven't yet seen anyone with a DPK and a CP4 failure post about their warranty experience.

 

The thing is the warranty is with Ford, not the dealer, so unless the dealer is backing it themselves, then they have no say over what warranty will cover.
Now, that would be unless they are willing to lie to Ford warranty about it.
But, getting caught doing that could put their whole dealership at risk.
In the past, I've heard all kinds of stories about what guys say they got warranted even with a bunch of mods, but I also know of a dealership employee getting fired for doing a warranty repair on a modded truck because he didn't tell Ford warranty that the truck had a tune.
And, that was like 20+ years ago, and things were more loose back than too.

 

Glad you got yours covered under warranty. Too few of those stories on the internet vs the alternative. I've read enough horror stories though I plan on getting the DPK installed in the next few weeks on my new '24 with only 6k miles on it. Fully aware I'll probably not get warranty coverage on the fuel system if anything goes on it. DPK is cheap insurance against a potentially denied claim though even if I have to replace a blown CP4 in the future on my own dime.

 

My plan is also a DCR kit to replace the CP-4. Right now I am at 41k miles, so it gives me some time to wait and see if anyone starts having DCR issues. So far so good.

 

Every time I see one of these failures it makes me worry about mine at 150,000+ miles. If I'm going to keep the darn thing to 300k maybe I should be moving the S&S pump kit up the priority list.

 

I had DPK installed at 38k miles to make it to 100k then its DCR time.

 

I have a DPK sitting on my shelf. The minute my truck hits 120k I'll install it. (ExtWarranty out) That said... given the funds at the time, I may just go DCR instead.

 

This is also one of my thoughts, let's get some of them out in the field. They look promising, and from what I've seen the engineering is definitely better, although CP4 set the bar low. But I'm only at 30k miles, so I'm not modifying chit until it's out of warranty. Hell, I won't even fill the DEF. I make them fill it and then keep all the receipts, lol