I have developed a fuel leak that appears to be coming from the tee on the back of the engine.  I called the dealership and found that in the tee are rubber seals, these may be the problem but the dealership wants twenty dollars apiece for them.  Any ideas on what else to use? 

I replaced mine a while back and used the factory rubber seals.  I couldn't believe how much they were but I was in a hurry so I used them.  It looked to me like a standard compression fittings would work if you can take it off and match the size.  That's what I would have done.  Maybe someone has already tried this and will chime in.

Dodge dealership or cummins? An actual cummins dealership is much cheaper.

Thank you, it was the Dodge dealership.  I can try the Cummins dealers and see how much for them there.

Check back with them. It is my understanding that all they sell is the whole
T
 fitting.

 

Ed

They said that the tee fittings are back east, but the seals are in Portland.  So it does not sound like it comes in a kit unless the tee's that are back east are a set?  I will check with a cummins dealer to see what they have on hand.  I was not sure if I could just get some O-rings from the hardware store?

Nope. they are just short pieces of fuel line.

 

Ed

From what I know is its like a piece of vacuum line sliced in thin pieces. But the problem is the ID and OD size requirement. I heard you can buy it by the foot but expensive.

I'd be nice to relocate the fitting to an area which is easier to get to. Even if it requires reinventing the wheel. Like on the bracket you had made for your gauge senders.

Edited December 3, 201410 yr by joecool911

Eventually, I will put out a product that removes the T all together. It will have to wait for warmer weather for final testing.

 

Ed

Has anyone tried a brass compression fitting or are the lines not a standard size

Edited December 4, 201410 yr by moostang

I have personally seen what looked like a 1/4 or 5/16 compression T on one before, but would be leery of vibration & fatigue.

 

Ed

I was wondering about a plastic tee that slips into a rubber hose, like a vacuum line?  There is not a lot of pressure, so not sure if that would solve the problem or just push it farther down the road?

I guess it has lasted almost 400,000 miles, so it can not be all that bad, might just have to get a few new parts and wait another 400,000 miles?

Wonder about the failure problems all together. I'm still using the factory tee after 12 years and not had a leak at the tee yet. I will most likely just replace with proper factor seals and continue on.

Wonder about the failure problems all together. I'm still using the factory tee after 122 years and not had a leak at the tee yet. I will most likely just replace with proper factor seals and continue on.

Wow! I think you have the record for the oldest VP truck!!

Darn keyboard.    My laptop is prone to doing that from time to time. (Edited and corrected!)

john deere likes to use similar tee fittings, and on them i have used a section of fuel line hose cut so i could just start the nut, and then crank it down.  never had it leak yet.... and way cheaper then the stealership or cummins....

Check back with them. It is my understanding that all they sell is the whole

T

 fitting.

 

Ed

The Whole t does not come with the seals. They are $11 a piece from Cummins. Ask me how I know

3905351 is the part # if it did not change again within the last 4 months

When I got my T, it was in a Cummins bag with the 3 grommets.

 

Ed