CP4.2 Bypass kit

FishOnOne wrote:

Cummins12V98 wrote:
Good info for the "F" guys!

Also good info for the RAM guys because it shows there was an inssue 14 and prior but from everything i have NOT heard the 15 and newer pumps are not having nearly as many issues.

The CP4.2 is still very sensitive to fuel contamination and aeration no matter how you spin it.

NOT spinning anything! RAM has had a high quality fuel filtration system since 2013.

Time will tell if the pump Cummins chose to use will hold up. Ya Gots 100k coverage to see how it goes.

FishOnOne wrote:

Cummins12V98 wrote:
Good info for the "F" guys!

Also good info for the RAM guys because it shows there was an inssue 14 and prior but from everything i have NOT heard the 15 and newer pumps are not having nearly as many issues.

The CP4.2 is still very sensitive to fuel contamination and aeration no matter how you spin it.

NOT spinning anything! RAM has had a high quality fuel filtration system since 2013.

Time will tell if the pump Cummins chose to use will hold up. Ya Gots 100k coverage to see how it goes.

kirkl wrote:
What year Rams have the CP4.2? I have a 2017 ram.

The CP4.2 is on the "updated" 2019 6.7L.

They had to do it in order to increase power output and meet emissions. While the CP3 puts out enough volume of fuel than the stock engine(turbo restricted) is capable of, it does not put out enough pressure to do it and meet emissions at the same time.

Basically they reduced reliability in order to increase power and meet emissions so they can keep up the pissing match. I for one was fine with the old stock power levels if it meant keeping the CP3 and just increase power afterwards with a tuner, but some people just gotta want more and more for bragging rights even if it lowers reliability.

kirkl wrote:
What year Rams have the CP4.2? I have a 2017 ram.

2019+

You have a CP3.

AlmostAnOldGuy wrote:

Grit dog wrote:
Seems like a great solution, but seems too simple?
Millions of these pumps are out there and the OE couldn't come up with a way to keep them from sending parts downstream?

For each pump sold the OEM saved $360. Multiply that by those millions and that is a lot of money to protect against an infrequent issue. But apparently Bosch also lost some business if GM switched to Denso.

Now if I owned the vehicle I would look at 360 as a bargain because any failure would be a big deal.

Take it easy,
Stu

This aftermarket item is $360 but making such a minor change to the original design would likely do nothing to the cost of each piece. It would have been a one time engineering cost with significant benefit.

What year Rams have the CP4.2? I have a 2017 ram.

Flashman wrote:
Remember GM and VW honored their warranties - it was Ford that shafted the owners. Great fix especially if you own a Ford diesel.

BMW also honored their warranties and even extended them for all customers using the CP4.1(single piston) and CP4.2(dual piston) version, but didn't seem to have that many issues.

There haven't been issues with the Cummins 5.0L in the trucks or medium duty from what I seen. The VM Motori Ecodiesel hasn't seem to have issues either, however, these two engines might be using the updated CP4.2.

Remember GM and VW honored their warranties - it was Ford that shafted the owners. Great fix especially if you own a Ford diesel.

Grit dog wrote:
Seems like a great solution, but seems too simple?
Millions of these pumps are out there and the OE couldn't come up with a way to keep them from sending parts downstream?

For each pump sold the OEM saved $360. Multiply that by those millions and that is a lot of money to protect against an infrequent issue. But apparently Bosch also lost some business if GM switched to Denso.

Now if I owned the vehicle I would look at 360 as a bargain because any failure would be a big deal.

Take it easy,
Stu

Seems like a great solution, but seems too simple?
Millions of these pumps are out there and the OE couldn't come up with a way to keep them from sending parts downstream?