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Secondary radiator that is for the M7 z06, i know its PN is 84201727... however, I am looking for just the 2 black hoses ALONE (pictured on the left), and not the rest of the kit. If anyone has a parts computer handy and can let me know if these hoses can be ordered separate, its greatly appreciated. I had no luck on the basic websites that I checked. These lines may come as a bundle with the hard metal lines pictured below, and that is fine too.
If you can't locate a part number for the hoses, you can build them pretty cheaply. Nothing exotic there. The plastic elbow piece is Chinese part you can get on Amazon for under $10, hi-temp hose is hi-temp hose, and the metal clips cost almost nothing.
If you can't locate a part number for the hoses, you can build them pretty cheaply. Nothing exotic there. The plastic elbow piece is Chinese part you can get on Amazon for under $10, hi-temp hose is hi-temp hose, and the metal clips cost almost nothing.
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What LarryFL said. I installed mine a couple of years ago but it's just heater hose.
Last edited by badhabit_wb; 03-20-2019 at 09:38 AM.
I'm pretty sure there are several threads and instructions on here. The hose part of the installation is really easy. You tie in between the oil cooler and the radiator.
Cool, im not opposed to making my own obviously, but I wanted to have the stock lines in my hand to perfectly mirror if I am going to make them myself, so that there is no issue putting them on the vehicles.
On our cooling kit, if the person decides they want the drivers cheek cooler to be for trans fluid, and increase trans fluid capacity, then the chin cooler can be given back to the radiator circuit, which is already proven helpful in the M7 cars, but our kit would have the oil cooler still in the passenger cheek cooling things down even further.
If a person runs blower coolant or radiator fluid through the drivers cheek HX, and leaves the chin as the A8 cooler, there MAY be a scenario where they can still get the A8 too hot (we have not managed to do it yet, but not saying it is not possible)
A couple hose swaps, and our system will be able to go from favoring one system to another, without much drama... just make sure they clean out the HX of whatever oil/fluid was in it before.
since no one has mentioned it yet, it should also be noted that the middle center metal lines in the pic above, those have different fittings as a person goes from an A8 to a M7.
A8's have female thread fittings welded on and quick connect ports screwed into those lines, which makes it a bit trickier to splice into.
This is why i wanted to see with my own eyes, what lines and fittings GM was using on the M7 cars in that area. But, i trust the photo above is accurate the more I think about it.
The hose part numbers aren't called out in the Secondary Radiator kit instructions. The online parts stores don't have any listings showing the existence of the secondary radiator for 17, 18 or 19 MYs. One hose without the plastic fitting plugs onto the outlet of the oil cooler and goes to the inlet of the secondary radiator. The one with the plastic fitting plugs into the inlet of the main radiator and goes to the outlet of the secondary radiator. Neither are formed hoses so as long as you get the proper fitting to plug into the radiator inlet you should be able to use any heater hose of the appropriate diameter.
whats odd is, on the A8 cars, that pair of metal lines IS a separate part and can be ordered individually. Strange why GM does not do the same on the manual trans car's kit.
Possibly because it is two cut to fit heater hoses and one reuseable but orderable plastic part if somebody breaks it. You can't find any part numbers for the heater hoses either. If they need replacing the mechanic cuts off what is needed from the spool in the parts department and uses it. Just like when they have to repair wiring harnesses and connectors. They just go to the box in the parts department and choose what they need.
Are there part numbers for the metal lines from the automatic? I’m very interested in making my own secondary radiator kit now.
EDIT, TOTALLY MISSED IT. SORRY
Does anyone have the part number for the foam piece and perhaps a set of install instructions? Thanks
Last edited by rico750sxi; 03-23-2019 at 08:25 PM.
All you need is the part listed above and the cooler to make it work. It splices in at the end of the hard line coming off the oil cooler, runs through the secondary radiator, and back into the main radiator. You can reuse the fitting that connects to the radiator.
the automatic hard lines, which you can order as seen above, those are going to come with threaded fittings and quick connect on each side. Im going to make you a video so you can see what i mean...
Are there part numbers for the metal lines from the automatic? I’m very interested in making my own secondary radiator kit now.
EDIT, TOTALLY MISSED IT. SORRY
Does anyone have the part number for the foam piece and perhaps a set of install instructions? Thanks
so that you dont panic when you get it and realize it does not have a barb on both sides like the M7 part does....
And install is really straight forward, just make sure you get whatever bolts etc you need to attach it into the chin area of the car. I dont know, as my car came with one, but i can look at it and see there is not much to it.
It's a 5/8" male boss fitting. That said I'd cut off the quick connect fitting and flare the end of the aluminum tube a bit and put the heater hose on it and clamp it. That's pretty much what GM did at the fitting that goes to the oil cooler on the kit I got if I remember correctly.
that is probably the way to go... i was doing all of these fittings to keep a persons car in tact where they dont have to cut anything, and would see the quality in our kits as no corners were cut.
The only reason i would say to someone NOT to cut it is if they think they will use it as an extra trans cooler later, like the A8 does, and are going to install a bigger radiator Aux HX in the drivers side cheek of the car to take care of that cooling.
It's a 5/8" male boss fitting. That said I'd cut off the quick connect fitting and flare the end of the aluminum tube a bit and put the heater hose on it and clamp it. That's pretty much what GM did at the fitting that goes to the oil cooler on the kit I got if I remember correctly.
Can you link the exact plastic fitting that you believe is used on the other end of that heater hose to plug into the radiator circuit?
03-20-2019, 02:02 AM
Secondary radiator HOSES' part numbers?
