Dorman 47080 Heater Hose Connectors - 5/8 In. X 3/4 In. Connector - Plastic Universal Fit

Instant bypass for a leaking heater core on my TJ. Fits both diameter hoses perfectly.

Needed to add a hose length to my supercharger intercooler radiator. Fit the hose well and did the job. It's been several months and miles with no leaks. Great solution at a good price for me.

The heater core was leaking in my 06 Hummer H3 so I just bypassed it with this for about $3 rather than spending over $100 and having to take the whole dash apart. eventually I'll replace the heater core but for now this will work.

fit &worked perfect

Chevy uses two sizes of water heater hose. I use this to unhook heater in the summer and join them together. Dont ask why!! You may be doing the same thing

fit perfect made out of plastic

Fits a 2001 Blazer perfectly.

Do not use this as a permanent fix. I installed two on the heater lines of my Jeep 4.0L engine. I had one break, and I replaced it thinking it was just a one-off bad part. Then, both broke 1 year later, on the same day no less. These are simply not durable parts, I suspect plastic just isn't good enough for this application. They have now been replaced with brass barbed fittings, I suggest you do the same.