Anyone know the thread size?

Megadad

Megadad

New member
Just like the title says, anyone know the thread size of the CCV fitting on top of the turbo on the '19-'23 trucks? I have attached a pic for reference. I'm gonna reroute that CC vent to an oil catch can on my '23 3500 SRW when I finally take possession of it in couple weeks. Just want to plug this with a pipe plug instead of capping it with a rubber boot.
The pic is from my neighbors '22 2500 ?

Thanks ?
 

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You are welcome to try the catch can, however be prepared for it not working.

The turbo provides a vacuum to the CCV filter permitting flow. The catch can is static. You may want to obtain a CTS3 and watch crankcase pressure.
 
Purely emissions related, lots of guys eliminate that CCV going into intake and it will run just fine. Keeps the intake path a lot cleaner too, its bad enough what the EGR does to the engine.
I just want to know the thread size of that fitting on the turbo if anyone has that info ?

Thanks ?
 
Cummins number on that fitting is 5560984. I looked at all the information provided that I could find, and there is no thread size mentioned. I do know that it's a metric thread with an O-ring.
You could maybe get away with just leaving the fitting in the turbo and capping it somehow.
 
I got another thread size question.....

Anyone know what size threads these fittings on the turbo coolant feed line are? Looks like a -10AN flared on the line and not sure what the boss fitting is....-10AN to metric straight pipe going into the EGR coolant pipe??

Thanks guys ?
 

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