EVIL ENERGY 1/2" Heater Hose Coolant Radiator Straight

EVIL ENERGY 1/2" heater hose is a 10-foot EPDM coolant line built to SAE 20R3 standards for hot-water and engine cooling connections, rated 100 PSI working pressure and designed to resist heat, oil, and antifreeze.

This straight 1/2" (13 mm ID) heater hose from EVIL ENERGY is engineered as a direct, durable pathway for coolant and related fluids in heating and engine systems. Made of EPDM rubber and manufactured to exceed SAE 20R3 Standard Wall Class D-2, the hose balances flexibility and strength for reliable routing between radiators, heater cores, overflow reservoirs, and small coolant circuits.

How does this hose handle engine heat and coolant temperatures?

The EPDM compound is formulated to tolerate high and low operating temperatures commonly found in engine bays and heating systems. It offers thermal stability across a wide range and resists degradation from hot coolant and antifreeze.

• Temperature range: -40°F to 257°F to cover cold starts and high-heat operation.
• Material: EPDM rubber for heat and chemical resistance.
• Suitable for coolant, water, and antifreeze blends without premature swelling.

Is this hose strong enough for automotive cooling pressure?

Yes—EVIL ENERGY designed the hose with a safety margin for common cooling system pressures. The specified working and burst pressures indicate reliable performance under normal and transient conditions.

• Working pressure: 100 PSI for continuous operating loads.
• Burst pressure: 300 PSI provides a wide safety factor for pressure spikes.
• Manufacture meets SAE 20R3 Standard Wall Class D-2 for dimensional and strength consistency.

Will this hose fit my setup and bend into tight spaces?

The hose dimensions and bend radius make it suitable for compact engine compartments and heater plumbing. Measure your inner diameter needs and available routing space before trimming.

• Inner diameter: 1/2" (13 mm) with ±0.5 mm tolerance for clamp fitment.
• Outer diameter: 0.78" (20 mm) with ±0.8 mm tolerance to plan clearance.
• Minimum bending radius: 104 mm to prevent kinks when routing.

How is this hose used and what applications suit it best?

The hose is intended for fluid-carrying roles where heat and coolant compatibility are required. It works well as a heater supply or return line, radiator connector, or overflow/reservoir link in automotive, light-duty industrial, and residential heating contexts.

• Typical uses: heater core lines, radiator-to-overflow connections, hot water heater plumbing.
• Compatible fluids: coolant, water, antifreeze, and similar non-fuel liquids.
• Length: 10 feet, allowing multiple cuts for bespoke installations or spares.

Who this is for: Technicians, DIYers, and fleet maintenance professionals who need a dependable, standard-compliant 1/2" heater hose for cooling and heating circuits will find this EVIL ENERGY hose useful. Choose it when you require a flexible, heat-resistant EPDM line with clear dimensional specs, a long 10-foot length for multiple applications, and robust pressure ratings for everyday vehicle and equipment servicing.