Engine/Transmission (1998.5 - 2002) turbo oil drainback nipple part number

[lmills]

Does anyone have the part number for the oil drainback pipe that goes into the block next to the oil filter for the turbo on a second gen truck? I am in need of one. I bought a used twin kit and need this piece. Thanks in advance.



Lloyd

 

[Bob Wagner]

p/n is 3946300 dan at redlinear has some used ones for sale

 

[lmills]

OK, thanks Bob!

 

[lmills]

Part number was the wrong one. That was for the drain back tube that comes off the turbo. I was looking for the nipple that goes in the block. They are different on the third gens. Anyway, the cummins shop is getting it for me.

 

[Bob Wagner]

sorry about that. 3931973 for that part isb-245

 

[lmills]

no problem.

 

[SRadke]

Like you say, they are diffrent on the third gens, very short and straight as oppose to the ~2" sweeping curve on the second gen's. The hole is the same size though, they'll interchange.



-Scott

 

[lmills]

exactly. right now I have the short one in both the front and back hole. I need to change the front one so it does not interfere with the oil filter.

 

[JStieger]

How do you get these nipples out of the block with mangling it? I have a +04. 5 turbo oil drain pipe with the flexible tubing that I want to install that replaces this nipple. I tried to get the nipple out of the block and it is in there tight!

 

[SRadke]

I don't think you could get one out without mangling it. They drive in there really tight. In fact, I think you'd have a difficult time getting it out at all without removing the pan and driving it back up from the bottom.



Can you post a pic of this "flexible tubing drain pipe" that the 04. 5's use? I've never seen one.



-Scott

 

[JStieger]

Scott-



connection, turbo oil drain p/n 3970875 $25. 92

 

[SRadke]

Interesting... Thanks for posting that. What is the approximate length overall?

 

[JStieger]

It's the length of 03 drain pipe + block nipple + ~2 inches.



If I measure along the curve = ~11 inches.



If I measure just the vertical length, without taking into account the curve, = ~10 inches.



This pipe is not a tight press fit into the block; the O-rings create the press fit seal.



I wanted to use this tube because the HTB2 and SPS turbos are slightly forward compared to stock causing the hose to be slightly off-set. Looks like I might try to tweak the stock drain tube a bit to get better alignment.