Heater Core Hose Diameter
Logistics Pro
Joined: Jan 2002
Posts: 4,907
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From: suburban atlanta
I would bet that it is 5/8" hose. I have not measured, but in recent times, that has been the standard size for heaters for everything that I have owned. The only time it has not has been is when 'special' curved hoses, or hoses with different diameters at either end are specified. In that case, it was also curved.{vulcan heater hose at the thermostat housing, FWD}
If you need curved hoses, a dealer is a good source, but you may find substitutes at auto parts stores. Sometimes you will have to trim the curved hose to the proper length. I would like sometime to have one of the design engineers of these 'wonders' try to find a replacement out in the middle of nowhere. The dealer may be the only source, and they may or may not have them in stock.
If you need curved hoses, a dealer is a good source, but you may find substitutes at auto parts stores. Sometimes you will have to trim the curved hose to the proper length. I would like sometime to have one of the design engineers of these 'wonders' try to find a replacement out in the middle of nowhere. The dealer may be the only source, and they may or may not have them in stock.
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Senior User
Joined: Dec 2013
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Thanks for the hits!
Actually, I'm not replacing them but I needed to know what size adapter to get to flush out my heater core. I'm going garden hose to barb adapter, using the hoses already connected to the core, flushing into a 5 gal bucket.
For the record though, I use rockauto.com for replacement hoses. I'll also check out cheapassforparts.com.
Actually, I'm not replacing them but I needed to know what size adapter to get to flush out my heater core. I'm going garden hose to barb adapter, using the hoses already connected to the core, flushing into a 5 gal bucket.
For the record though, I use rockauto.com for replacement hoses. I'll also check out cheapassforparts.com.
Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
Suprawill1, why not get a Prestone 'flushing tee' and embed that into the heater hose permanently? They are pretty inexpensive, and allow you to connect a garden hose to back flush the complete cooling system, including the heater core. They also allow a spot to 'burp' your system of trapped air bubbles if you pick a 'high' spot to install the Tee.
tom
tom
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Senior User
Joined: Dec 2013
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Hi Tom,
I almost did get a flushing tee but I ended up getting the system flushed professionally. I believe the core and the core hoses need special attention. Between the three, something is partially clogged and preventing me from getting good flow through the core. Neither core hose are getting as hot as the top radiater hose.
Will
I almost did get a flushing tee but I ended up getting the system flushed professionally. I believe the core and the core hoses need special attention. Between the three, something is partially clogged and preventing me from getting good flow through the core. Neither core hose are getting as hot as the top radiater hose.
Will
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