EVIL ENERGY 3/8in Heater Hose 10ft – EPDM, 100 PSI, SAE 20R3, 10 Clamps, Black

Product overview

The EVIL ENERGY 3/8in heater hose delivers a reliable conduit for coolant and water circuits. Built from durable EPDM rubber, this 10 ft hose offers flexibility for routing through tighter engine bays while maintaining solid performance under pressure and temperature extremes.

With a working pressure of 100 psi and a burst rating of 300 psi, it is designed to handle typical automotive and home cooling tasks. The hose is rated for temperatures from -40°F to 257°F, providing resilience from frigid starts to hot operating conditions in a variety of environments. The connection size is 3/8 inch ID and 5/8 inch OD, with a tight bend radius that helps prevent kinking in confined spaces. It meets SAE 20R3 standard class D-2 requirements, reflecting its intended role in cooling and flow circuits.

Key specifications

• Size ID: 3/8" (9.5 mm); OD: 5/8" (16 mm); Length: 10 ft; tolerance ±0.4 mm / ±0.5 mm
• Material EPDM rubber for durability and flexible routing
• Performance Working pressure 100 psi; Burst pressure 300 psi; Temperature range -40°F to 257°F; Min bending radius 76 mm; SAE 20R3 Class D-2
• Medium Compatible with coolant, water, antifreeze, and similar fluids

Medium compatibility and applications

This hose is suitable for a range of cooling and fluid-routing tasks. Common use cases include connecting components within automotive cooling systems, linking hot water heaters, and routing between radiators and overflow reservoirs. Its EPDM composition supports steady flow while withstanding variable fluid temperatures and pressures.

• Automotive cooling systems and engine bays
• Hot water heater connections
• Radiator to overflow reservoir routing

What you get and installation notes

Each kit includes a 10 ft straight heater hose plus 10 hose clamps, providing a ready-to-install solution for many standard routing challenges. The straight configuration simplifies alignment in tight spaces, and the included clamps help establish secure, leak-free connections when tightened to appropriate specifications.

• 1 x 10 ft hose, 1 x 10 pcs of clamps
• Straight ends for easy installation
• SAE 20R3 compliant, Class D-2

Care and durability

To maximize service life, avoid sharp kinks and store away from direct sunlight when not in use. Regular inspection of hose ends and clamps can help identify wear or potential leaks before they affect system performance. This hose is designed to provide dependable service across a range of cooling and fluid-handling needs, offering flexibility and resilience without committing to a guaranteed outcome.