Coolant hose identification.

xwig16 · Jul 12, 2024

First off, I'm no mechanic, but I am pretty handy. I noticed a coolant leak under my truck and identified this hose was bulging and spraying coolant while the truck is running. Should be easy for a novice like me to replace but I don't know what it's called. It's located directly beneath the thermostat housing. Can someone help me identify this part so I can get one on order? Any tips or tricks to install it would be helpful also.

1993 C3500 Dually 6.5 Turbo Diesel.

RichLo · Jul 12, 2024

I would just take it off and bring it to a parts store to get the right ID. Its just an off the shelf universal hose

xwig16 · Jul 12, 2024

That's probably what I will end up doing. Need to take a look and see if I have enough room to get a rachet in there to loosen the hose clamps. Wish me luck.

Schurkey · Jul 12, 2024

Almost certainly a coolant bypass hose. As said, it appears to be just bulk heater hose of the proper diameter, although maybe it's got molded bends that aren't obvious from that photo.

someotherguy · Jul 12, 2024

xwig16 said:
That's probably what I will end up doing. Need to take a look and see if I have enough room to get a rachet in there to loosen the hose clamps. Wish me luck.

When you have a short hose like that between two stationary assemblies, it can be a little tricky getting the old one out, and new one in. You may end up needing to cut the old one so be sure you're prepared to catch the spill (large open-top style drain pan/bucket) and have alternate transportation to the parts house to take the remains of that hose with you in order to get the correct size. Buy more hose than you'll need in case you mess up the first try.

And, be 100% sure you're getting heater grade hose.

All in all though it looks slightly longer and a straight shot, easier than the coolant bypass hose on a big block, which really shouldn't be a pain, but often is, thanks to the short run and angles:

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Richard

smdk2500 · Jul 13, 2024

Its the bypass hose. It is a 1 inch hose. I just got regular heater hose you wont need more then a foot. When I did my 95 I had to replace the thermostat crossover gaskets so it was pretty easy to do hardest part was getting the old hose loose from the water pump and crossover.. You might be able to get away with cutting the old one off and getting it on. If you do have to pull the crossover its not to bad 4 bolts and a couple nuts. The gaskets last I knew where a couple bucks a piece.

1998_K1500_Sub · Jul 13, 2024

xwig16 said:
...my truck...

1993 C3500 Dually 6.5 Turbo Diesel.

I that engine really as clean as the picture suggests?

Post another picture, one of the engine and engine bay, if you please.

someotherguy · Jul 13, 2024

1998_K1500_Sub said:
I that engine really as clean as the picture suggests?

Post another picture, one of the engine and engine bay, if you please.

I was thinking the same thing but if you look closer it's just a screen shot from a Motor Trend page; that's probably a brand new truck in the picture, for a magazine review/press photo shoot.

Richard

xwig16 · Jul 15, 2024

I got it fixed. Thank you all for your help.

I pulled that photo off of the internet but the inside of my engine bay is pretty clean. I sprayed it all down with a degreaser and and let it sit a while. Took a pressure washer to it about a week ago. It's looking pretty good (on top at least.)

Coolant hose identification.

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