*TECH TIP* LMM EGR delete heater hose

[JoshH]

I've been having a hard time coming up with something really useful to share with you guys, but I was reminded of this handy little part just a couple of days ago when I was getting ready to do an EGR delete on an LMM. As you may know, GM decided to pull coolant for the EGR cooler and heater from down by the oil cooler on the LMM. This creates somewhat of a problem when doing an EGR delete on them because for one, the hose barbs are different sizes, and two, they are very close together making it tough to hook together without kinking the hose or making a big ugly loop. Fortunately, there is a hose that is readily available that is stepped to fit both hose barbs, and it is the perfect width to connect both outlets.

This is a Gates hose p/n 18743. The legs are different lengths when you buy it, but in the pictures, I have already trimmed the longer one so they are equal length.

 

[meshanic]

Nice!!! That always sucks trying to route the coolant & keep it looking clean.

 

[duramaxdiesel]

Wow! Cool tip Josh. I'll be buying one of those real soon:thumb: Thanks!


Nick

 

[Josh2002cc]

Thanks Josh. Is this readily available at Napa or say an AutoZone?

 

[MACKIN]

Part Number: B87629
Alternate Part Number: S-4354


Autozone or Advanced Auto part numbers for the above hose for reference.Both places suck for the record!

 

[juddski88]

We just save the stock gm 180° bend to use here.

 

[JoshH]

Thanks Josh. Is this readily available at Napa or say an AutoZone?

If they don't carry Gates, they should be able to cross reference it. I've found some stores stock the hose, and other have to order it. It just depends on where you go. At the least, they should be able to get it pretty quick.

We just save the stock gm 180° bend to use here.

You talking about the hose that hooks up from the EGR cooler to the heater core? I've used that hose before, but it's a little too wide.

 

[juddski88]

Its worked great with good hose clamps. I Dont trust the stock clamps much, especially the smaller ones.

 

[DIESELMAFIAPER.LB7]

ive done what judd has few times to but that hose might look cleaner good tip Josh :thumb:

 

[Josh2002cc]

B87629 is available at Napa with a retail walk in price if $11.49. Thanks for the tip Josh.

 

[Hot COCOAL]

Nice find and good tip Josh, it's always good to have smart options to choose from:thumb:

 

[blk smoke lb7]

Thanks for the great tip.:thumb:

 

[durallymax]

Nice tip I also do what judd does but agree that the hose you found would be cleaner as it is a tighter bend.

 

[trashygasman]

Could this also work for deleting the factory fuel filter or is it the wrong size? I can't remember if the heater hose is 5/8" or 1/2" off the top of my head.

 

[$chultz38]

Could this also work for deleting the factory fuel filter or is it the wrong size? I can't remember if the heater hose is 5/8" or 1/2" off the top of my head.

You need diesel rated fuel hose for that.

 

[trashygasman]

Duh! I knew it had to be something simple or Josh would have mentioned it for that also.:hug:

 

[MadMaxx61]

This is great info and looks much better than a lot I have seen.

Josh maybe sticky this one.:thumb: