EVIL ENERGY Heater Hose 3/4 in 10ft EPDM Coolant Hose Kit — 10 Clamps, 100 PSI

This heavy-duty heater hose bundle delivers a reliable, flexible connection for coolant, water, and antifreeze lines in automotive and light-truck systems. Constructed from EPDM rubber and engineered to meet SAE 20R3 standards, the hose tolerates wide temperature swings and resists aging, ozone, and common coolant chemicals. The kit includes ten stainless-style clamps so you can create secure, leak-resistant joins right out of the box.

How does this hose handle engine heat and cold starts?

EPDM rubber is selected for its thermal resilience: it stays flexible at low temperatures and resists softening at high temperatures. The hose works across a wide operating window, so it maintains a reliable seal whether the engine is cold or when it’s running hot under load.

• Temperature range: -40°F to 257°F for consistent performance.
• Meets SAE 20R3 Standard Wall Class D-2 requirements for heat tolerance.
• Burst pressure: 300 PSI for safety margin above working pressure.
• Minimum bending radius: 152 mm for installation flexibility.

Is this hose strong enough for coolant system pressure?

The hose is rated for a continuous working pressure of 100 PSI and a burst pressure of 300 PSI, giving a comfortable safety factor for typical cooling-system demands. Reinforced EPDM manufacturing helps the hose resist internal pressure and external abrasion over time.

• Working pressure: 100 PSI suitable for most automotive cooling circuits.
• Burst pressure: 300 PSI to withstand spikes and pressure surges.
• Consistent wall thickness and dimensional tolerances for reliable sealing.

What sizes, fittings, and installation details should I expect?

This kit includes a single 10-foot length of hose with a 3/4" (19 mm) inner diameter and 1.10" (28 mm) outer diameter, plus ten clamps so you can create several connections or trim to fit. Dimensional tolerances are tight to ensure repeatable fits when connecting to heater cores, radiators, or coolant reservoirs.

• Inner diameter: 3/4" (19 mm) with ±0.6 mm tolerance for accurate fitment.
• Outer diameter: 1.10" (28 mm) with ±0.8 mm tolerance.
• Length: 10 feet, cut-to-fit for heater hoses, radiator runs, and bypass lines.
• Included hardware: 10 clamps for secure, leak-resistant connections.

Which fluids and applications are suitable for this hose?

This hose was designed for coolant-system use but is compatible with water, antifreeze, and other common non-fuel engine fluids. It’s appropriate for heater cores, radiator-to-overflow lines, and various low-pressure coolant routing tasks in cars, trucks, and some industrial equipment.

• Compatible media: engine coolant, water, antifreeze, and similar fluids.
• Typical uses: heater core lines, radiator overflow, bypass plumbing.
• Not intended for fuel, oil, or high-permeation chemical service.

Who is this for: installers, DIY mechanics, restoration builders, and fleet technicians who need a dependable, flexible heater hose with enough length to cut custom runs. If you want a straightforward EPDM hose that meets SAE 20R3 standards, withstands temperature extremes, and arrives with clamps so you can install without sourcing additional parts, this EVIL ENERGY kit is a practical choice.