What the heck is this hose?!

jerryv · Post by **jerryv** » 28 Oct 2023, 15:07

The other day I noticed my coolant expansion tank was low and I tracked down a slow drip drip driping from a hose at the very bottom of the engine. The hose in question runs from a 2 way plastic breech-lock manifold (looks integrated with the hose) that connects with the engine block and "lower coolant hose". The other side (hose clamped) connects to a metal tube with another hose on the passenger side.

Looking at the VIDA parts diagrams....nothing really seems to match. The manifold is not on there, nor is the lower metal tube part...and the heater inlet/outlet hoses dont appear to match what Im lookin at. See pics!

What is this hose? Anyone ever replace one? It looks like a major PITA!

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Post by **xHeart** » 28 Oct 2023, 16:05

Could it be one from this...

chitownV · Post by **chitownV** » 29 Oct 2023, 11:08

#39 to #40 in the parts diagram listed earlier.

Here's a video to show what that lower crossover plastic pipe and hoses look like on the vehicle

Oly850 · Post by **Oly850** » 29 Oct 2023, 14:29

I was thinking # 41 because it’s going past the oil pan, but I think you’re right about it being 39. Looks like the guy in the video replaced both.

jerryv · Post by **jerryv** » 29 Oct 2023, 17:03

Wow thanks!! Def #39. Anyone know the part number on that one?

chitownV · Post by **chitownV** » 29 Oct 2023, 19:25

#38, 39, and 40 should all be replaced at the same time. If one is causing an issue, the others are not far behind with the same age on the rubber and hoses and rubber o-ring connectors. It’s also easier to just remove them as an entire unit with the intake manifold off.

#40 is made of plastic so you risk breaking this trying to remove the other hoses. To remove #39, you might need to remove the fan to give extra room and removing the intake manifold gives you more room. #40 is screwed onto the engine block so you need to remove the intake manifold for proper access.

Post by **xHeart** » 30 Oct 2023, 08:56

chitownV wrote: ↑29 Oct 2023, 19:25 #38, 39, and 40 should all be replaced at the same time.

Please look here https://parts.volvocarslisle.com/a/Volv ... B361CEA571 for part number.

Post by **cn90** » 30 Oct 2023, 09:37

Also,

Rule of thumb when 1 hose leaks. Make a list and replace them using only Volvo Genuine hoses.

They may cost a few hundreds $, but on the long run, you save $/headache/towing cost etc etc.

chitownV · Post by **chitownV** » 30 Oct 2023, 10:47

I didn't spend the extra money on Volvo-branded rubber hoses and all of my hoses are doing well in my 3.2. I spent it on quality aftermarket OE hoses where I could. Since this engine is shared with Land Rover and made by Ford (FoMoCo), you can save some money by not purchasing the Volvo name. Some hoses won't be available aftermarket, in that case, there is no choice but to go with the original Volvo.

If you use FCP, you will have a lifetime replacement guarantee.

jerryv · Post by **jerryv** » 31 Oct 2023, 11:44

Thanks again everyone. Doh! I just recently had the intake off to replace the alternator.
#39 hose OEM Volvo is $100+, 3rd party euro is $30 and Chinese ebay special is $17. Quite the spread for a rubber tube with a plastic bit!