EVIL ENERGY 3/4" Heater Hose 20FT - EPDM Coolant Radiator Hose, 100psi Working Pressure

EVIL ENERGY 3/4" Heater Hose 20FT is a heavy‑duty EPDM coolant hose built to SAE 20R3 standards, delivering reliable 100psi working pressure and wide temperature tolerance for radiator, heater and overflow connections.

This 20‑foot, 3/4" (19mm ID) heater hose is designed for engine cooling systems and hot water heater plumbing where durability, flexibility and compatibility with antifreeze/coolants matter. Constructed from EPDM rubber and engineered to meet SAE 20R3 Standard Wall Class D‑2 requirements, it resists heat, ozone and coolant chemicals while remaining flexible down to -40°F and up to 257°F.

How does this hose perform under engine heat and pressure?

The hose offers a 100psi rated working pressure and a 300psi burst margin, providing a safety buffer for typical vehicle cooling systems. EPDM construction maintains structural integrity across a broad temperature range so it stays pliable and leak‑resistant during repeated thermal cycles.

• Working pressure: 100psi; burst pressure: 300psi
• Temperature range: -40°F to 257°F for hot and cold climates
• Meets/exceeds SAE 20R3 Standard Wall Class D‑2 expectations

What are the hose dimensions and installation considerations?

The hose measures 3/4" (19mm) inside diameter with an outside diameter around 1.10" (28mm) and comes as a continuous 20‑foot length—enough for multiple runs or custom routing. Tolerances are tight for a predictable fit, and the minimum bending radius guides installation to avoid kinks.

• ID: 3/4" (19mm) ±0.6mm; OD: 1.10" (28mm) ±0.8mm
• Length: 20 feet—cut to fit for custom applications
• Minimum bending radius: 152mm to prevent stress and collapse

Which fluids and applications is the hose compatible with?

Made from EPDM rubber, the hose accepts coolant mixtures, water, antifreeze and similar engine fluids without rapid degradation. Its chemical and ozone resistance makes it suitable for radiator-to-overflow connections, heater cores and other cooling system runs in passenger vehicles, trucks and equipment.

• Compatible with coolant, antifreeze and water-based fluids
• Common uses: radiator lines, heater hoses, overflow and hot water heater plumbing
• Resists ozone, heat and coolant chemicals for longer service life

How does this hose compare to OEM or aftermarket alternatives?

EVIL ENERGY’s hose is built to SAE 20R3 specs, offering a professional‑grade wall thickness and pressure rating comparable to many OEM hoses. The long 20‑foot length and EPDM construction give installers flexibility to replace multiple short runs with a single durable piece, often at lower cost than individual OEM hoses.

• Standardized SAE 20R3 construction for predictable performance
• 20ft continuous length reduces joints and potential failure points
• EPDM rubber provides long life versus cheaper non‑EPDM materials

Who is this for: mechanics, fleet managers, DIY auto enthusiasts and anyone replacing or customizing cooling system plumbing will find this EVIL ENERGY heater hose practical and cost‑effective. It suits repairs and upgrades in passenger cars, light trucks, industrial equipment and hot water plumbing where a resilient, heat‑tolerant EPDM hose is required. Choose this 20‑foot hose when you need a reliable, flexible run that meets industry standards and gives room to cut to exact lengths for neat, secure installations.