The ContiTech Heater Hose is the perfect solution for extreme underhood temperatures. Constructed to meet specifications similar to SAE J20R3, this hose is reinforced with 2-spiral synthetic for additional strength and durability. The EPDM rubber offers superior resistance to heat, ozone and chemical coolants, making it an excellent choice for antifreeze coolants. FleetPride is your First Click in Heavy Duty®.