What is this engine part? Pics included

[94OilBurner]

So I finally got all my little odds and ends on the truck fixed up (lights, reverse alarm, tranny fluid, fuel leak, etc..) and I notice another oil leak. It drips onto the filter and I thought that was the problem but I replaced the filter and cleaned the housing.

I ran the truck while looking under for leaks and found the oil coming from the center of this large (2.5"+/-) pipe that goes from above the oil filter housing to the front of the engine on the drivers side, just below the exhaust manifold. I have no idea what this part is but it seems to be part of the oil system. I assume it transfers the oil to or from the engine and through the filter but have no clue.

Here are some pictures from another engine where I circled or pointed to it in green.




Thanks for any help, it's greatly appreciated,

-Derek

[rollbut]

same problem i had. mine was dripping down the filter turned out i had a very fine pin hole in the casting of the oil filter housing below where the 2.5'' pipe goes into the housing get a good light and look close at it. 1997 f250 power stroke all stock

[94OilBurner]

Well, I yanked the whole thing out and can't see where the leak is coming from. I hope I can just replace the O-rings and solve the problem but since it's out I might as well replace the housing and never worry about it again.

Apparently, it's the oil heater (according to my Haynes manual) which explains the coolant running through it too.

[pipelayerjdh]

Some call it an oil cooler also.

[fordnut85]

it's kinda both a heater and a cooler, it's function is to keep the engine oil at an optimum temp to operate the injectors correctly.

[94OilBurner]

Called Ford today to get a price on a new oil filter housing with that leaking pipe and they told me it would be over $1000 and would have to be ordered from Canada.

For a 94 with only 55,000 miles, this d*mn diesel has given me more trouble than my 92 Ram diesel with 276,000 miles . You just can't beat a Cummins...

[tjmp111]

it takes four o-rings. they are easy to install and cost about $20. so dont spend the thousand dollars. just pop the end caps off and install the orings put the caps back on that easy

[willypscustoms]

its a flux capacitor. jk lol

[DIESEL RACER]

Take it off and change the o-rings. Ford should have all the gasket kits in stock, probably $20 for the o-rings, $15-$20 for the 2 gaskets that seal it to the block. When reassembling, make sure to oil the o-rings and we use our shop press to put the ends back on.

[94OilBurner]

Originally Posted by DIESEL RACER

Take it off and change the o-rings. Ford should have all the gasket kits in stock, probably $20 for the o-rings, $15-$20 for the 2 gaskets that seal it to the block. When reassembling, make sure to oil the o-rings and we use our shop press to put the ends back on.

Yeah I replaced all the O rings and the little gaskets for where the unit bolts to the block. After 6 hours of removal and installation, I ran the truck and as soon as it built oil pressure, the oil started squirting from a few pinholes in the side of the tube.

I found an assembly on Ebay for $50, so when that gets here I will try that. It better work, it's not easy taking it all apart.