ICT Billet 5/8 to 3/4 Inch Hose Barb Splice Coupler Reducer Repair Fitting Adapter Connector Radiator Coolant Intercooler Heat Exchanger Fluid Designed & Manufactured in USA Bare Aluminum AN627-11A

Used on auto coolant system

Good adapter

Used this to bypass my heater core on my 96 Cherokee and 98 Grand Cherokee. Has both ends that I need. I preferred this route rather than just using one size hose and make it fit.

Delivered on time and the big plus, its made in the USA.

Put this in a Camaro to unite two different size heater hoses because my heater core was leaking and this way was able to bypass heater core and connect the 5/8 inch hose from the radiator to the 3/4 inch hose going to the engine..

5/8” x 3/4” adapter. Good quality, fast shipping.

Worked perfect for my heater hose havent ran the engine much yet but looks like a quality fitting

Perfect for what I needed to reduce a heater hose line for my classic car.

Most RVs are frankenstein assemblies. In my case, the vent hose from the gas fill (where the nozzle inserts) was a different size than the vent hose coming back from the tank. I needed this adapter to join them. Thankfully someone actually makes it! Sharp barbs on this product, accurate sizing, clamps & hoses are on tight, and the split/leaking hoses of prior work gone!

Works perfect to adapt my hose!