W116 300sd Lower Radiator Hose - PeachParts Mercedes-Benz Forum

xaliscomex · #1 09-11-2018, 05:00 PM

Own a 1979 300sd (w116) and need to replace the Lower Radiator Hose.

Classic Center no longer carries the hose (part#1165013682).
I tried Pelican Parts and they also don't have it.

Ordered the lower radiator hose from O'riellys a few months ago and tried to install it yesterday. Hose did not fit due to the natural bend being out of place and it being short. Pulling on the hose to make it reach compromises the natural bend.

Any ideas on where I can source out a good (tight fit) hose?

Any recommendation is greatly appreciated

Squiggle Dog · #2 09-11-2018, 10:37 PM

Why would anyone make one; it's just a lower radiator hose, nothing important. Haha. Yeah, it's unbelievable that no one seems to make one. Was it the GATES 20700 that I purchased and still haven't installed? I hope not. I can tell just by looking at it that it's a smaller diameter and bent differently than the original, but hope it will still work.

AutoZone sells a DAYCO C70705, which is probably going to be a similar fit to the GATES 20700. You can also take your chances and order a ÜRO brand hose from eBay or AutoZone. Otherwise, you can use a beautiful universal fit flex hose. Haha.

Yeah, if the GATES 20700 hose doesn't fit, I'm going to be upset, because then I guess I'll be forced to buy ÜRO.

There is another possible option if you are patient--an Australian-made Mackay brand CH4421 (odd since the W116 300SD was never sold there)

https://www.ebay.com.au/itm/Mackay-Radiator-Hose-Bottom-CH4421-/161881381605

I may go this route...

xaliscomex · #3 09-12-2018, 11:24 PM

Quote:

Originally Posted by Squiggle Dog

Why would anyone make one; it's just a lower radiator hose, nothing important. Haha. Yeah, it's unbelievable that no one seems to make one. Was it the GATES 20700 that I purchased and still haven't installed? I hope not. I can tell just by looking at it that it's a smaller diameter and bent differently than the original, but hope it will still work.

AutoZone sells a DAYCO C70705, which is probably going to be a similar fit to the GATES 20700. You can also take your chances and order a ÜRO brand hose from eBay or AutoZone. Otherwise, you can use a beautiful universal fit flex hose. Haha.

Yeah, if the GATES 20700 hose doesn't fit, I'm going to be upset, because then I guess I'll be forced to buy ÜRO.

There is another possible option if you are patient--an Australian-made Mackay brand CH4421 (odd since the W116 300SD was never sold there)

https://www.ebay.com.au/itm/Mackay-Radiator-Hose-Bottom-CH4421-/161881381605

I may go this route...

Tried to install the Gates 20700 hose and it does not reach.
Purchased the Dayco C70705 hose (Made in U.S.A) at AutoZ and it fits really good. My local AutoZ had one in stock.

No leaks detected yet

Will report back tomorrow

Squiggle Dog · #4 09-13-2018, 01:41 PM

Quote:

Originally Posted by xaliscomex

Tried to install the Gates 20700 hose and it does not reach.
Purchased the Dayco C70705 hose (Made in U.S.A) at AutoZ and it fits really good. My local AutoZ had one in stock.

No leaks detected yet

Will report back tomorrow

Wow! While I feel pretty good about Gates quality, just from comparing it next to the original hose, it seems like fitment would be a struggle, to say the least.

I had thought about ordering in a Dayco hose just to see how it compared, but figured the fitment would be the same and I read through several Gates vs Dayco hose debate threads where the consensus was Gates was superior and Dayco had issues with fitting too loosely, bubbling, or coming apart. Those threads were years old, however, and quality can change over some years.

I'll probably order in a Dayco hose if your report back is a positive one.

Squiggle Dog · #5 10-13-2018, 07:06 PM

The AutoZone DAYCO C70705 (made in USA) lower radiator hose seems to be a better fit than the O'Reilly GATES 20700 (made in [conveniently rubbed off]), just from looking at it. The opening at the bottom is larger than the Gates hose and closer to the size of the Mercedes hose. It also doesn't have the weird bend near the bottom. However, the upper bend turns forward instead of backwards, but hopefully those hose will flex enough for this to not be a problem.

In both pictures, the hose order goes, left to right: Mercedes, Dayco, Gates.

I will post the fitment results after I install the hose, which might not be anytime soon.

Assault · #6 10-13-2018, 08:04 PM

Years ago I think I purchased the Australia brand is was a NOS

Otherwise there are still some choice out there
Genuine (runs about 35 pre shipping)

CONTINENTAL 66483
DAYCO 70705
ACDELCO 22058M
GATES 20700
and everyone's favorite
ÜRO PARTS 1165013682

Squiggle Dog · #7 10-13-2018, 09:33 PM

Quote:

Originally Posted by Assault

Years ago I think I purchased the Australia brand is was a NOS

Otherwise there are still some choice out there
Genuine (runs about 35 pre shipping)

CONTINENTAL 66483
DAYCO 70705
ACDELCO 22058M
GATES 20700
and everyone's favorite
ÜRO PARTS 1165013682

Sadly, genuine Mercedes is no longer available. I didn't about the ACDELCO 22058M, although when you look it up, it shows a Gates hose:

I didn't know about the Continental option, either. I probably would have chosen it first. Interestingly, the hose in the photo looks identical to the shape of the Gates one and the lower opening also looks too small.

I wish I could see a CONTINENTAL 66483 next to the GATES 20700 and the DAYCO 70705, but if it's anything like the picture above, it looks like it would fit the same as the Gates.

Diesel911 · #8 10-13-2018, 10:15 PM

When first got my Mercedes I changed the Radiator Hoses and the By-pass hose section. I bought URO Radiator Hoses. That was in 2007. The only functional issue I had was the upper hose was an extremely tight fit over the nipples.

Other then that no deterioration issues. (Never had an Oil or other contaminants get on them.) and they survived some an over heating incident caused by a leaking Water Pump.

Assault · #9 10-13-2018, 10:27 PM

Hmm I just searched my favorite genuine Mercedes parts site and it pulled the part up 25$ and about 41 with shipping. Also did south Atlanta benz they offer it to 49$ shipped

Probably could order it through pelican, but it is still available.

That is good to know on the Uro hose though, I would figure the lower radiator hose would be a safer purchase on a uro part.

Squiggle Dog · #10 10-14-2018, 01:58 AM

Quote:

Originally Posted by Assault

Hmm I just searched my favorite genuine Mercedes parts site and it pulled the part up 25$ and about 41 with shipping. Also did south Atlanta benz they offer it to 49$ shipped

Probably could order it through pelican, but it is still available.

That is good to know on the Uro hose though, I would figure the lower radiator hose would be a safer purchase on a uro part.

It comes up, but any place you order genuine, it comes back as no longer available (I've already tried several different vendors and The Classic Center). If you can order and send me a new genuine Mercedes lower hose in the 1165013682 part number, I'll pay you twice what you paid for it plus all the shipping.