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Heater Hose

AAASTAND® heater hoses are manufactured from high-temperature EPDM, NBR/PVC blend, or silicone rubber reinforced with textile braiding to meet SAE J20 R3/R4 standards for coolant compatibility, burst resistance, and thermal cycling durability. Available in molded or straight universal designs, with crimped fittings, quick-connect ends, or pre-installed clamps.
AAASTAND® heater hoses circulate engine coolant to and from the HVAC heater core, maintaining cabin temperature and system efficiency under fluctuating pressure and thermal loads. Designed to resist electrochemical degradation (ECD), cracking, and collapse. Offered in multi-branch molded assemblies or single-run formats.