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Silicone Rubber Blue Coolant Hose, 2.39 Inch OD, 2.00 Inch ID, 36 Inch Long

Burst Pressure 400	Brand Flexfab	Brand Flexfab	Pack Size 36.00	UOM LN3	Hose I.D. 2	Hose O.D. 2.39	Length 36	Supplier Part Number 5581-200	Alternate Part Numbers Alternate Part Number 5581-200, Alternate Part Number C1KG56, Alternate Part Number MI-08749338, Alternate Part Number MINO-01591X98014	Product Weight 3.66 lbs

Product Questions & Answers 6

Product Questions & Answers

What kinda temperature range can this hose handle?

Question by: Jimmy B on Aug 9, 2025, 10:23 AM

Continuously, this hose is good from -65°F all the way up to 350°F.

Answer by: Customer Support on Aug 10, 2025, 9:19 PM

i got a straight 2 inch coolant line to replace. is this hose actually 2" on the inside, and how long is the piece?

Question by: Tommy P on Nov 23, 2025, 3:52 PM

It is a 2.00 inch inside diameter hose with a 2.39 inch outside diameter, and it comes as a 36 inch length.

Answer by: Customer Support on Nov 24, 2025, 9:31 PM

Running a big diesel on a medium-duty haul truck and need to swap out the upper coolant hose. This one measures right at 2 inch ID where it connects. That gonna be a match?

Question by: Harold C on Mar 2, 2026, 10:58 AM

A 2.00 inch ID is exactly what this hose carries, so the bore size lines up. The outside diameter runs 2.39 inches, which matters when you're routing through tight brackets or clamp positions. At 36 inches long, there's usually enough length to cut to fit if your run is shorter. Four-ply silicone construction with polyester reinforcement means it holds its shape under pressure and heat without collapsing, which is what you want on a working diesel.

Answer by: Customer Support on Mar 4, 2026, 8:56 AM

hose says it goes up to 350 degrees, is that continuous or just a peak rating?

Question by: Brent W on Dec 20, 2025, 4:35 PM

Continuous operation, not just a spike tolerance. The -65°F to 350°F range covers normal ongoing use, so running it hot day in and day out falls well within what it's built for. The four-ply polyester-reinforced silicone construction holds up under sustained heat a lot better than standard rubber hose.

Answer by: Customer Support on Dec 22, 2025, 7:47 AM

trying to replace a straight coolant hose, are the measurements on this one 2 inch inside and 2.39 outside for real?

Question by: Kirk M on Apr 15, 2025, 9:13 AM

The hose is sized at 2.00 inch ID and 2.39 inch OD, and it comes in a 36 inch straight length, so it matches setups that call for those exact dimensions.

Answer by: Customer Support on Apr 16, 2025, 2:23 PM

What kind of pressure can this hose handle before it busts?

Question by: Harold R on Aug 6, 2025, 6:30 PM

This Flexfab hose is built to withstand a burst pressure of 400 psi, which should hold up well in demanding industrial applications.

Answer by: Customer Support on Aug 8, 2025, 7:16 AM

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