Hi guys,

This past weekend i was driving on the highway with my family when I noticed my temp climbing up in a hurry. I pulled over and noticed that I was leaking coolant from a thin metal pipe under the passenger side next to the catalytic converter.
I was looking at the oem replacement part number for this pipe and I came up with part #16268. Can anyone confirm this for me? Please see pic below.

Any advise or tips will be appreciated.

 

Is that top picture basically under the passenger front seat along the frame rail? If so, that is the pipes going to the rear heater function. You can look up on the firewall under the hood and see 2 metal pipes connected to 2 rubber pipes that appear to point straight down. If this is the case, you can replace the coolant pipes with OE, you can replace with rubber, or you can connect the 2 rubber lines and bypass the rear heater,

 

It's a failure prone (in, ahem, certain parts of the country where they USE SALT ON THE ROADS!!!) on 96 - 00 4Runners. I noticed in the junkyards that the 01-02 4Runners have shiny unpainted metal pipes, either stainless or aluminum (I forget).

I replaced the lines on my 99 before they leaked with a set of later ones from a pick-n-pull ($10 or something!) and I could tell that those rusty crusty steel pipes wouldn't have lasted much longer. Paper thin in spots.

 

 

comes down to do you need the rear heater

I have never seen one that was repaired once the lines rusted

 

^^ So true!

I would personally repair the rear heater if it was my vehicle, but I am the type of person who likes having all factory accessories working, even if it does not make sense to repair on an older vehicle.

 

You're exactly right... its those pipes under the pass seat going to the rear heater. Right now i can't drive my car cause im leaking lots of coolant.. so maybe ill do as you suggested and bypass the rear heater. However, i would like to change the pipes.... can you guys help me with the part number for these? Thanks a bunch

 

 

Hi guys, This morning I took a quick pic under my hood on my way to work to see if I could quickly spot the pipes going to the rear heater. Please let me know if these are the ones.
thanks again for all your help.

 

Yup. Those are the ones. Buy a barb fitting to connect the 2 rubber lines while you decide how you want to handle your rear heater, and away you go.

 

Thanks a bunch guys... i need to fix this asap .. my wife is home without a car...