5/8 to 3/4 Barb High Flow Hose Joiner- Coupler Union

This hose joiner is a great way to step up any 5/8 hose to 3/4 pushlock or heater hose lines. Typically used in supercharger cooling systems where high flow is a necessity these joiners feature a full .750” inner diameter to negate any possible restrictions. 5/8 Hose is commonly found on GM supercharged vehicles.