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Silicone Rubber Blue Coolant Hose, 1.39 Inch OD, 1.00 Inch ID, 36 Inch Long

Burst Pressure 550	Brand Flexfab	Brand Flexfab	Pack Size 36.00	UOM LN3	Hose I.D. 1	Hose O.D. 1.39	Length 36	Supplier Part Number 5581-100	Alternate Part Numbers Alternate Part Number 5581-100, Alternate Part Number C1KG97, Alternate Part Number MI-08749324, Alternate Part Number MINO-01591X98007	Product Weight 2.46 lbs

Product Questions & Answers 3

Product Questions & Answers

What kinda pressure can this hose handle before it busts?

Question by: Kent H on Feb 28, 2026, 6:07 AM

This hose is built to withstand a burst pressure of 550 psi, giving you a good safety margin in most applications.

Answer by: Customer Support on Mar 2, 2026, 6:02 AM

got a 1 inch coolant line i need to replace. is this hose actually 1" on the inside and 36" long?

Question by: Jimmy W on Dec 3, 2025, 6:17 PM

It is a 1.00 inch ID hose with a 1.39 inch OD, and it comes in a 36 inch length.

Answer by: Customer Support on Dec 5, 2025, 6:28 AM

What's the temp range on this hose? Running coolant lines on a fleet truck and we see everything from hard freezes in winter to sitting in the sun all summer long.

Question by: Johnny C on Jan 13, 2026, 6:25 AM

Continuous operating range runs from -65°F up to 350°F, so it handles both deep cold and high under-hood heat without issue. Four-ply silicone construction with polyester reinforcement keeps it from going soft or cracking at either extreme. For fleet work across variable seasons, that range covers just about anything you'd run into.

Answer by: Customer Support on Jan 15, 2026, 6:35 AM

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