Uselection 5/8" ID x 5 ft Silicone Heater Hose — Polyester‑Reinforced Coolant Line, High‑Temp & High‑Pressure

Uselection's 5/8" inner-diameter, 5-foot silicone heater hose is a reinforced coolant and radiator line built for high pressure, wide temperature swings, and long-lasting flexibility in engine bays.

This premium silicone hose replaces brittle or thin factory lines with a polyester-reinforced design that stands up to coolant additives, elevated engine temperatures, and the mechanical stresses of modern vehicles. It’s designed for heater, coolant, air, and general engine-compartment fluid routing where durability and resistance to collapse matter.

How does this hose handle heat and cold under the hood?

The silicone compound and reinforcement fibers tolerate extreme temperature ranges without cracking or hardening. That stability keeps connections intact and reduces leak risks during repeated thermal cycles.

• Temperature range: -40°F (-40°C) to 392°F (200°C)
• Silicone material resists brittleness in cold and softening in heat
• Maintains flexibility for easier routing and clamping

What pressure and mechanical stresses can it withstand?

Engine cooling circuits demand hoses that resist internal pressure and external abrasion. This hose uses polyester fiber reinforcement to achieve high working and burst resistance appropriate for many coolant and heater applications.

• Working pressure: 116 PSI for sustained system loads
• Burst pressure: 232 PSI for safety margin under spikes
• Thick 0.160-inch wall for enhanced durability against kinking and wear

Will it work with my vehicle’s fluids and accessories?

The silicone construction tolerates common engine fluids and additives found in cooling systems and heater lines. It’s suitable for routing air, water, antifreeze mixtures, and related engine-compartment media when used within its size and pressure limits.

• Compatible with coolant and antifreeze blends and many additives
• Appropriate for air and water routing in heater/cooling circuits
• Use clamps rated for high-temperature silicone to secure ends

How does the hose compare to standard factory lines?

Compared with many original equipment rubber hoses, this silicone line offers thicker walls and improved temperature and pressure tolerance, which reduces the need for frequent replacements and helps prevent sudden failures.

• Nearly three times thicker wall than thinner aftermarket hoses
• Longer service life in hot, vibration-prone conditions
• Smoother inner bore resists deposits and promotes steady flow

Who is this for: Professionals and enthusiasts who need a reliable, flexible heater or coolant hose for engine maintenance, restorations, swaps, or performance upgrades. Uselection’s 5/8" ID x 5ft silicone hose fits applications that require a robust replacement for fragile stock rubber lines—especially where higher temperatures, frequent cycling, or aftermarket cooling setups are present. Install with appropriate clamps and observe vehicle-specific routing and pressure specifications.

Features:

• Material: durable silicone compound
• Wall thickness: 0.160 inches for increased resilience
• Reinforcement: polyester fiber for high-pressure resistance
• Working pressure: 116 PSI; burst pressure: 232 PSI
• Temperature capability: -40°F to 392°F (-40°C to 200°C)
• Applications: heater lines, coolant routing, air and water circuits in engine compartments