Outus Silicone Heater Hose 1-1/4" ID 5ft Roll — Blue, Reinforced 60 PSI High-Temp

This silicone heater hose from Outus is a ready-to-cut 5-foot coil designed for radiator, heater, and hot-water lines where high heat resistance and long service life matter. Constructed from silicone with a polyester reinforcement braid, it resists aging and cracking better than standard EPDM rubber hoses. The hose handles extreme temperatures and common automotive coolants while remaining flexible and simple to install for DIYers and professional mechanics alike.

How does this hose cope with high engine temperatures?

The Outus silicone hose is formulated to tolerate very wide temperature swings, from freezing conditions to intense heat without hardening or becoming brittle. Its silicone compound preserves elasticity at elevated temperatures and the braided reinforcement keeps its shape and pressure integrity.

• Working temperature range: -40°F to 428°F (-40°C to 220°C).
• Designed for stable performance under prolonged heat exposure.
• Silicone resists heat-related aging better than standard rubber.

Will it fit my vehicle and how do I install it?

This hose has a precise 1-1/4" inner diameter (32 mm) and a 42 mm outer diameter, supplied in a 5-foot coil so you can cut to length. Its flexibility and kink resistance simplify routing; trim cleanly with a sharp blade and secure with appropriate hose clamps for a reliable seal.

• Inner diameter: 32 mm (1-1/4").
• Outer diameter: 42 mm for clamp compatibility and sizing checks.
• Supplied as a 5 ft roll so you can customize lengths for heater and radiator runs.

How much pressure and which fluids can it handle?

The Outus silicone heater hose is engineered for typical automotive cooling system pressures, rated to 60 PSI continuous working pressure with a higher burst threshold. It’s compatible with water, coolant mixes, and many thermal media used in vehicle systems, and tolerates mild acids and alkalis up to recommended concentrations.

• Working pressure: 60 PSI; burst tested to about 142 PSI.
• Suitable media: water, antifreeze/coolant, hot water, air, steam, and weak acids/alkalis (≤25%).
• Reinforced braid improves pressure resistance and prevents expansion under load.

How long will the hose last and what maintenance is needed?

Silicone construction with a polyester reinforcement layer delivers extended life versus EPDM rubber, resisting cracks, splits, and thermal aging. Regular visual inspection and ensuring clamps remain tight are usually all that’s required to maintain reliable service life.

• Reinforced design reduces failure from aging and thermal cycling.
• Inspect for cuts, abrasion, or clamp slippage during routine maintenance.
• Minor expansion or softening at very high temperatures is normal and does not impair function.

Who is this for: The Outus 1-1/4" silicone heater hose is suited for car and truck owners, mechanics, restorers, and hobbyists who need a durable, heat-resistant replacement or custom coolant line. Choose this hose if you require flexible routing, long-term resistance to thermal degradation, and a ready-to-cut 5-foot length that adapts to heater cores, radiators, and custom plumbing in performance or everyday vehicles.