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Yute 5/8 Inch I. D. SAE J20 R3 Black Heater Coolant Hose 100psi. SAE J20 R3 Standard: Meets SAE J20 R3 standards for fuel injection systems including EFI and TBI. High Pressure Resistance: Rated for 100 PSI working pressure and 300 PSI burst pressure. Durable EPDM Construction: Features black EPDM rubber tube and cover with double layer polyester reinforcement. OEM and ODM Services: Offers full, minor, and flexible customization from samples or designs. Fast Off-Season Delivery: Average lead time within 15 workdays during off-peak seasons. Comprehensive Certifications: Hoses approved by UL, CE, DOT, AMECA, ROHS, REACH, and PAHS. 100% Quality Inspection: All finished products undergo visual and functional inspection by 12 QA inspectors.