5521 and 5834 Series - Premium Heater Hose

Our Premium Heater Hose Features A Thicker Wall That Offers Higher Pressure Handling Than Standard Hoses. Strong And Reliable, It Withstands The Hardening, Cracking, And Leaks That Can Be Present In Hostile Engine Environments. Plus, It’s Resistant To Aging And Chemicals, Including Coolant Additives.


  • Extreme Temperature Resistance
  • Extreme Duty Cycle Tested For Hostile Engine Environments
  • Superior Flexibility
  • Bend Radius 5 X ID
  • Durable Construction
  • Coolant Additives
  • Pressure Endurance
  • Box And Spool Lengths
  • Thicker Wall Offers Higher Pressure Handling

Temperature Range

-65° F
350° F


  • 5521 Series: Silicone Hose With 1-Ply Of Nylon Fiber Reinforcement. Green Cover, Red Liner
  • 5834 Series: Silicone Hose With 1-Ply Of Para-Aramid Fiber Reinforcement. Blue Cover, Red Line
  • Available In Green
  • Stocked In 25’ And 50’ Boxes
  • Available In Longer Lengths On Standard Wooden Spools - continuous lengths are not guaranteed, if continuous lengths are required please contact a sales rep for price and availability


  • Meets Or Exceeds The Operating Requirements Of SAE J20 R3 Class A
  • Meets Or Exceeds The Operating Requirements Of TMC RP303B Class I Grade II
  • Standard Wall Thickness Is .170”/.220”
  • Working Pressure Is 1/3 Of The Burst Pressure
  • Resists Hardening, Cracking, Cold Leaks, Aging, And Many Chemicals

Built to Withstand