Join Date: Feb 2009
Location: Largo, FL 33774
I do not know if the hose is available. You can use regular heater hose, and get the restrictor separately. Make sure you put the restrictor on the correct direction. Hose clamps will work to hold it all together. In an emergency, you can just replace the entire unit with a piece of hose. The restrictor minimizes the amount of water going through the heater core, and can be spliced in later. It attaches to the back of the intake manifold below the edge of the distributor, and goes to the input side of the heater core.
There may be a "quick disconnect" at the firewall. They are not quick, and definitely not easy. You have to push the white nylon clip in, to release the black metal end. The white nylon stays with the heater core. There is an O-ring in the hose to seal it. You can remove the white nylon piece after removing the hose, and use a hose clamp to hold the replacement hose.
1991 OCC 461 (.030 over 454) BBC, 3.23 posi, flash to pass, drop spindles & springs, Impala rims, Hydroboost, Recaros, MOMO/wood SW w/QR, custom wood shift knob, Pioneer DEH P77DH
1992 OCC now with 5.7 tbi, DEH P77DH
For a parts list, check https://www.impalassforum.com/vBulle...ion-parts.html