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Silicone Rubber Blue Heater Hose, Inch OD, Inch ID

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Description & Features

The Silicone Rubber Blue Heater Hose is expertly crafted to endure heavy-duty pressure in extreme engine environments ensuring reliable performance. With a hose I.D. range of 0.855" to 0.905" and an O.D. range of 1.18" to 1.22" it is ideal for applications in air conditioning pressure washing and engine brake systems.

Designed with a continuous operating temperature range from -65deg;F to 350deg;F this hose is resistant to coolant additives and features a robust nylon fiber reinforcement. The recommended fitting attachments include Oetiker Steplessreg; Ear Pinch Clamps and Trident #730 S.S. Constant-Torquereg; Clamps. Avoid using serrated slotted or wire type clamps.

Manufactured by Flexfab the hose is designed for durability and efficiency making it a reliable choice for professionals dealing with hydraulic brake or air brake systems.

MPN: 5526-087X25

Specifications

Color
Blue
grp Fitting Attachments
Oetiker Stepless® Ear Pinch Clamp, Oetiker Stepless® Spring Clamp, Trident #730 S.S, Constant-Torque® Clamp
Hose Type
1-Ply Standard Heater Hose
Series
5526 Series
Tube Material
Silicone

Product Questions & Answers (3)

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Question by: Kurt A on Aug 15, 2025, 3:44 PM
What kind of clamps do I need to use with this hose? Don't wanna mess it up.
Answer by: Customer Support on Aug 17, 2025, 1:17 PM
For fitting attachments, Oetiker Stepless Ear Pinch Clamps and Trident #730 S.S. Constant-Torque Clamps are recommended. You shouldn't use serrated, slotted, or wire-type clamps, though.
Question by: Shane W on Feb 17, 2026, 5:44 PM
what's the temp range on this hose? running it on an engine brake system and need to know if it'll hold up to the heat
Answer by: Customer Support on Feb 19, 2026, 3:13 PM
Rated for continuous use from -65°F up to 350°F, so it handles the kind of heat engine brake systems throw at it without breaking down. The nylon fiber reinforcement adds to that durability, and the silicone construction holds up against coolant additives too. For that application, it's a solid fit.
Question by: Frank T on Jan 11, 2026, 12:11 PM
got a tight spot on a heater line, what size is this hose really on the inside and outside?
Answer by: Customer Support on Jan 12, 2026, 2:25 PM
For fit-up, the inside diameter runs 0.855 to 0.905 inch, and the outside diameter runs 1.18 to 1.22 inch.

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