This SAE 30R7 rubber hose is found in all Radium Engineering crankcase ventilation oil catch can systems. It is designed specifically for positive crankcase ventilation systems. Unlike heater hose, PCV emission control hose resists engine oil, gasoline, diesel fuel, ethanol fuel including E85, and other chemicals commonly found in the crankcase lines. And unlike high pressure EFI fuel hose, this hose is lightweight and has great flexibility to work with hose barbs and OEM spring clamps. This hose is ONLY available in black.