Rear Heater Hoses & Hard Lines FYI

[WHG423]

Since I have now gone through my engine compartment during the refresh and pretty much replaced every hose, belt, or other 28 year old rubber dried up part that could fail me, I decided I should check the hoses going to the rear heater. Yep, they looked questionable too so I cut them off. I had some cut-to-length straight hose left over so with fingers crossed I cut them to proper length and put them on. As I figured would probably happen, the bend radius was too much for straight hose to handle and caused them to kink. It probably would have been OK but did not sit well with me.



I did some digging online and it looks like a hard item to find. I'm sure someone out there has them, but I'm lazy and didn't search too long especially knowing what premium a Toyota formed hose can bring.
So off to my favorite NAPA I go with crusty hose in tow. I live not far from one of their distribution centers, they usually have most everything in-house. They pulled out a big ole' book with preformed hose shapes in it. We found a few that looked close and had them pulled from the warehouse. Nailed it!

Here is some need to know info for you guys in need.

Part # 10453
Price $12.95 each

It is a tad shorter than stock, but works just fine!









Hope this helps someone out!

 

[Wile E Coyote]

Yup, I had help from a Carquest store years ago...we went behind the counter and found two that worked in just a few mins. Of course, I didn't keep the part numbers to post up helpfully like you did.

 

[gregnash]

Ah ok... I have that exact heater hose that I had bought to replace one of the ones in the engine compartment but ended up being the wrong one. Still have it sitting around, good to know where it should go!

 

[pandasfj]

Cool...I was just thinking what I was going to use to replace mine with,considering toyo does make them anymore.Or their very expensive to buy from aussie. Thanks for the info

 

[WHG423]

Just thought I'd add to this thread. I recently replaced the hardline to the rear heater. Mine had rusted where the pipes are insulated along the firewall. OEM no longer avaliable, so I had some copper ones made.






























Turned out that the crimping wasn't necessary, the 1/2" ID copper line as just fine as/is but it was an nice touch.
20' of copper line from Home Depot =$48
Bending at the Hydraulic shop = $30
New lines = $78 =Win!!

 

[DoubleNickels]

You don't see copper much on the underside of vehicles. Is that purely due to price, or are there other reasons? Looks great, btw.

 

[WHG423]

I don't know. I figure if it's good enough for radiator construction, it will work fine for this. I don't live in a salty, corrosion prone area so I wasn't concerned with that aspect. My old ones must have retained moisture in the insulation leading to their demise.

 

[87CRUSR]

The exposed underside pipe could be wrapped with something for added protection or longevity.

 

[mmajsw]

I thought that there was limited use of copper tubing on a vehicle because it would work harden over time due to small bits of flexing and become brittle. Best to use steel lines.

 

[LAMBCRUSHER]

Beno just got me a set of those rear heater hoses...FYI...those new pipes are sweet!

 

[Freewheel]

Mixing copper and iron in a salty wet environment will likely cause electrolysis corrosion problems. I would make sure that anything copper is separated from iron by a layer of plastic or rubber. If you're out of the salt belt it may be OK for a while, but I would keep an eye on the points where copper and iron touch. I don't think copper is used for radiators- I'm pretty sure it's brass, which has a better electrolysis resistance.

 

[WHG423]

Thanks for everyone's input. I did some research before jumping to copper. I have read some things regarding dissimilar metal corrosion. There are arguments both ways. I wanted to go stainless, but finding in in a timely, cost effective manner was an issue. I will closely monitor the copper lines and be a test mule for this repair. If it proves to be a failed attempt, I will at that point source some stainless lines.

 

[Elbert]

good take on a mod to get things going. If nothing works in regard to hard line...why not just run some heater hose back to the rear heater....mount it well and cover it to reduce damage.... I took my rear heater out and still have the hard line....I got new OEM hard line from yota a few years ago...apparently one of the last sets sold. When I had rear heat...I wondered a few times about what I would do when the hard line needed replacing and it would be NA from toyota at that point.

 

[Zack1978]

Beno just got me a set of those rear heater hoses...FYI...those new pipes are sweet!

So the OEM rubber hoses are available? I assumed they were NLA.

 

[LAMBCRUSHER]

Beno is the man...if you're not sure if it still exists, hit him up. these hoses were like 16 or 17 bucks a pop. But they fit better than the other hoses. and they should be good for another 20 years...