Duramax Diesels Forum Truck of the Week
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Old 01-31-2014, 09:36 AM
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Default *TECH TIP* LMM EGR delete heater hose

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.







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Old 01-31-2014, 10:19 AM
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Nice!!! That always sucks trying to route the coolant & keep it looking clean.
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Old 01-31-2014, 10:26 AM
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Wow! Cool tip Josh. I'll be buying one of those real soon Thanks!


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Old 01-31-2014, 10:33 AM
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Thanks Josh. Is this readily available at Napa or say an AutoZone?
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Old 01-31-2014, 10:42 AM
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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!
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Old 01-31-2014, 10:50 AM
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We just save the stock gm 180 bend to use here.
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Old 01-31-2014, 10:55 AM
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Quote:
Originally Posted by Josh2002cc View Post
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.

Quote:
Originally Posted by juddski88 View Post
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.
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Old 01-31-2014, 11:33 AM
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Its worked great with good hose clamps. I Dont trust the stock clamps much, especially the smaller ones.
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Old 01-31-2014, 11:38 AM
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ive done what judd has few times to but that hose might look cleaner good tip Josh
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Old 01-31-2014, 02:18 PM
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B87629 is available at Napa with a retail walk in price if $11.49. Thanks for the tip Josh.
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Old 01-31-2014, 04:53 PM
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Nice find and good tip Josh, it's always good to have smart options to choose from
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Old 01-31-2014, 05:07 PM
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Thanks for the great tip.
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If you were helping folk with problems, or asking for input on your problems, it might be different, but from where I see, you are only a little different than the Russian spammers selling iPads that we delete.

Act like more of a human, and less like a spambot, and you'd probably catch less heat. This is "family", and it's our corner bar, and a group of guys with grease all over them leaning over fenders of somebodies truck that ain't making the right boost.

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You're welcome to be a member here, and post about your build, but don't expect people to shower you with roses yet. That comes with seat time on the site, and on the track.
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Old 02-17-2014, 09:00 AM
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Nice tip I also do what judd does but agree that the hose you found would be cleaner as it is a tighter bend.
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Old 02-18-2014, 08:21 AM
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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.
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Old 02-18-2014, 08:39 AM
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Quote:
Originally Posted by trashygasman View Post
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.
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