EVIL ENERGY 1" Heater Hose Coolant Radiator 10ft Black — 1" ID EPDM, 60psi Working Pressure

EVIL ENERGY 1" heater hose is a 10-foot EPDM coolant line built to SAE 20R3 standards, delivering reliable 60psi working pressure and wide-temperature performance for heater and radiator connections.

This heavy-duty hose is made from EPDM rubber and sized for 1" (25mm) inner diameter applications where coolant, water, or antifreeze needs a durable, flexible connector. Engineered with reinforced walls and tested burst capacity, it’s intended for heater cores, engine cooling circuits, overflow lines and other automotive or stationary hot-water systems. The product balances pliability for tight routing with strength to resist pressure, heat, and common coolant chemicals.

How does this hose perform under typical engine temperatures?

The EPDM formulation tolerates a broad temperature span from -40°F to 257°F, making it suitable for cold starts and sustained engine heat. Because it meets SAE 20R3 wall requirements, it resists softening, swelling, or premature degradation when exposed to coolant and antifreeze formulations.

• Temperature range: -40°F to 257°F for cold and hot environments
• Material: EPDM resists coolant and common additives
• Safer long-term use in heater and radiator circuits

Is this hose strong enough for pressurized cooling systems?

Designed with a working pressure rating of 60psi and a burst pressure of 180psi, the hose provides a substantial safety margin for most automotive and stationary heating uses. The reinforced wall construction exceeds SAE 20R3 Class D-2 expectations, helping prevent blowouts and leaks under normal to elevated operating conditions.

• Working pressure: 60psi for continuous operation
• Burst pressure: 180psi for safety margin
• Meets/exceeds SAE 20R3 Standard Wall Class D-2

Will it fit my installation and how flexible is it for routing?

The hose has a nominal inner diameter of 1" (25mm) with an outer diameter near 1.33" (34mm) and a manufacturing tolerance to ensure consistent fit with common clamps and fittings. Its 10-foot length gives room for trimming to exact runs, and a minimum bending radius of 200mm enables routing through tight engine bays without collapsing.

• ID: 1" (25mm) with ±0.5mm tolerance for reliable coupling
• OD: ~1.33" (34mm) with ±0.8mm tolerance to match clamps
• Length: 10 feet, cut-to-fit convenience
• Min bending radius: 200mm for neat routing without kinks

What applications are best suited to this heater hose?

This hose is intended for heater cores, radiator-to-overflow lines, and other coolant or hot-water transfer roles in automotive and light industrial systems. It’s compatible with water, coolant and antifreeze mixes, so it can be used wherever those media flow under moderate pressure and heat.

• Heater core supply and return lines
• Radiator connections and overflow hoses
• Engine cooling system plumbing and small hot-water circuits

Who is this for: EVIL ENERGY’s 1" heater hose is aimed at mechanics, automotive enthusiasts, restoration projects, and facilities maintenance teams that need a dependable replacement or upgrade hose. If you require a 10-foot EPDM coolant hose with proven pressure ratings, SAE 20R3 wall performance, and flexibility for tight installations, this product provides a balance of durability and serviceability without specialty tools.