Oil fittings on turbo

[NPloysa]

Guys, what is the name for the type of fitting used on the oil supply and return on our truck turbos? It's usually a male fitting with a rounded nipple, kind of similar to hydraulic fittings.



Thanks,

Nick

 

[metal tech]

the "slightly rounded" end is AN fitting style. they can be 37 or 45 deg flare. I'm not sure what thread is in the turbo center section.



Al

 

[NPloysa]

That's what I thought! Make sense now, duh! Do most hydraulic shops have them?

 

[metal tech]

if they don't have them on hand, a "good" speed shop should have some 37 deg AN fittings.

 

[NPloysa]

Appreciate it!



Nick

 

[bmoeller]

These are the #'s that were for my '97. Don't know it's called a female fitting on the invoice, it's not.



Cummins P/N-



3919687 Connector, female



3037236 Seal, o-ring



The fitting is about $6-7.



Unless the later ones are different, the drain on my truck just took a gasket.



Gasket P/N is (unless the # has been supercceded) 3914388

 

[NPloysa]

Sorry, I should have clarified! I am looking for these for my jet engine, which is an HT3B, so yes, it uses these fittings in a stock OTR truck application, but not pickup! The ones on my truck are, fortunately, doing just fine!



Thanks everyone

 

[bmoeller]

Gotcha.

 

[justinp20012500]

Guys, what is the name for the type of fitting used on the oil supply and return on our truck turbos? It's usually a male fitting with a rounded nipple, kind of similar to hydraulic fittings.



Thanks,

Nick

The oil supply is a -6 to a boss oring fitting (that what most people use for a HT3B). I am not sure on the size of the boss oring.



The stocker (HX35) use boss oring fittings on the top of the cartridge and the filter housing.

These are the #'s that were for my '97. Don't know it's called a female fitting on the invoice, it's not.

The fitting used on the 12v'ers are JIC/AN type fitting the fittings on the 24v's are a boss oring type.







Justin

 

[jrobinson2]

The fittings on the turbo oil feed line on a 24v are not O-ring boss, they are "Face seal" also known as ORS or O-ring swivel. On O-ring boss the o-ring is on the outside of the threads against the hex, face seal has a groove cut in the face for the o-ring.



Jared

 

[NPloysa]

Looking in my Grainger catalog I do not see face seal but I do see male NPT AN style and JIC/SAE style female.



There are also NPT x JIC styles and O-Ring/JIC.



Expensive too! I am debating whether I should soft-line it with hydraulic hose or hard-line it with copper... .



Nick

 

[jrobinson2]

If you hard line with flared copper usually it will use SAE 45* flare, hydraulic type JIC or AN fittings are 37* flare.



Jared