Red -4 to 1/8 NPT Straight [AN Female Flare to NPT Male B-Nut] Oil/Fuel AN Fitting Adapter HTST-3F-044-BLUE this HPS silicon radiator and

this HPS silicon radiator and heater hose kit can withstand the harsh high temperature and high pressure operating conditions of the engine yet still maintaining peak efficiency during competition or daily driving

HPS 2" (51mm) x 3" Long High Temp 4-ply Reinforced Black Silicone Offset Coupler Hose meet and exceeds SAEJ20 industry standards

HPS 1" (25mm) x 3 Feet Long High Temp 4-ply Reinforced Black Silicone Tube Coupler Hose meet and exceeds SAEJ20 industry standards

HPS 5/8" ID (16mm) Red high temp reinforced silicone heater hose 25 feet roll meet and exceed SAEJ20 industry standards

Red -4 to 1/8 NPT Straight [AN Female Flare to NPT Male B-Nut] Oil/Fuel AN Fitting Adapter HTST-3F-044-BLUE this HPS silicon radiator andThe AN thread is a type of fitting that is used to connect flexible hoses and rigid metal tubing that supplies fluid. It gained popularity in professional racing due to the ease with which new lines could be easily customized. Its use spread to the aftermarket automotive performance field due to its ease of adaptability, upgradability, and durability.