Replacing Heater Hose
Thread Starter
4th Gear
Joined: Feb 2005
Posts: 4
Likes: 0
Replacing Heater Hose
Need to replace my heater hose (73 350w/ air)...are there stubs on the engine-side of the firewall or do you need to access the heater core under the dash?
Any advise would be much appreciated!
Any advise would be much appreciated!
Team Owner
Joined: Aug 2000
Posts: 21,473
Likes: 463
From: Massillon,Ohio USA
2020 C3 of the Year Finalist - Unmodified
Cruise-In VI Veteran
St. Jude Donor '08-'09-'10-'11-'12
Originally Posted by 73vert
Need to replace my heater hose (73 350w/ air)...are there stubs on the engine-side of the firewall or do you need to access the heater core under the dash?
Any advise would be much appreciated!
Any advise would be much appreciated!
Melting Slicks
Joined: Jan 2003
Posts: 2,817
Likes: 21
From: Somerset, NJ
You need to jack the front end up and use (2) jack stands if you don't have a lift. The hoses are right under the passenger side of the firewall. Make sure you cut them off. You may have to take the rock guard off to gain access if there is still one on your car. Don't try to pull the hoses off unless you want to replace your heater core while you are at it. Like others have said get yourself a new razor blade and slit the hose along the area that is connected to the heater core and gently take them off. Get yourself a can of spray silicone to spray in the new hoses when you put them on. They will slide right on really nice after spraying. Don't try putting them on dry. Use 2 new stainless hose clamps and your are good to go.
Safety Car
Joined: Jul 2002
Posts: 4,269
Likes: 3
From: St. Charles IL
Cruise-In 5-6-7-8-9-11-12 Veteran
A CI-6 Car Show Winner
There are 2 different sized heater hoses and the originals had a formed elbow at the heater box end. Gates makes the hoses with the formed elbows and they are available at most auto parts stores.
Melting Slicks
Joined: Jan 2003
Posts: 2,817
Likes: 21
From: Somerset, NJ
Originally Posted by Big Fish
There are 2 different sized heater hoses and the originals had a formed elbow at the heater box end. Gates makes the hoses with the formed elbows and they are available at most auto parts stores.
Drifting
Joined: Nov 2002
Posts: 1,951
Likes: 1
From: Shore NJ
Originally Posted by ffas23
You need to jack the front end up and use (2) jack stands if you don't have a lift. The hoses are right under the passenger side of the firewall. Make sure you cut them off. You may have to take the rock guard off to gain access if there is still one on your car. Don't try to pull the hoses off unless you want to replace your heater core while you are at it. Like others have said get yourself a new razor blade and slit the hose along the area that is connected to the heater core and gently take them off. Get yourself a can of spray silicone to spray in the new hoses when you put them on. They will slide right on really nice after spraying. Don't try putting them on dry. Use 2 new stainless hose clamps and your are good to go.
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