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Radiator & Hot Water Hose

Radiator and hot water hose handles elevated temperatures and coolant fluids in automotive cooling systems, heating circuits, and industrial hot water transfer.

The Hosemaster stocks straight and moulded rubber hoses, silicone options for higher temperature applications, and general hot water hose in a range of bore sizes and lengths. Our range of hot water and radiator hoses also includes 90º degree elbow hoses, 45º degree hoses, and flexible cuffed radiator hoses for those tricky installations.

So, if you’re looking for a radiator hose or hot water hose, you’re in the right place!

  • REF #2599

    Standard Duty Rubber Hot Water Hose

    8mm - 32mm

    Standard Duty Rubber Hot Water Hose

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    £3.77 INC VAT
    £3.14 EXC VAT

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  • REF #5462

    Super Flexible Rubber Radiator Hose - 1 Metre Length

    13mm - 152mm

    Super Flexible Rubber Radiator Hose - 1 Metre Length

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    £18.16 INC VAT
    £15.13 EXC VAT

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  • REF #8221

    Smooth Blue Food Quality Dairy Washdown Hose

    10mm - 25mm

    Smooth Blue Food Quality Dairy Washdown Hose

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    £7.09 INC VAT
    £5.91 EXC VAT

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  • REF #9001

    Heavy Duty 20 Bar Rubber Compressed Air & Water Hose

    22mm - 102mm

    Heavy Duty 20 Bar Rubber Compressed Air & Water Hose

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    £25.37 INC VAT
    £21.14 EXC VAT

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  • REF #2601

    GRECATO Super Flexible Corrugated Radiator Hose

    19mm - 51mm

    GRECATO Super Flexible Corrugated Radiator Hose

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    £25.68 INC VAT
    £21.40 EXC VAT

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  • REF #5793

    High Temperature EPDM Rubber Water Delivery Hose

    19mm - 102mm

    High Temperature EPDM Rubber Water Delivery Hose

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    £27.36 INC VAT
    £22.80 EXC VAT

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  • REF #1499

    High Temperature EPDM Water Suction & Delivery Hose

    19mm - 204mm

    High Temperature EPDM Water Suction & Delivery Hose

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    £26.10 INC VAT
    £21.75 EXC VAT

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  • REF #9005

    6 Bar Black Steam & 15 Bar Hot Water Hose

    13mm - 76mm

    6 Bar Black Steam & 15 Bar Hot Water Hose

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    £24.26 INC VAT
    £20.22 EXC VAT

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  • REF #9004

    Straight Radiator Hose - 1 Metre Length

    13mm - 204mm

    Straight Radiator Hose - 1 Metre Length

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    £13.78 INC VAT
    £11.48 EXC VAT

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  • REF #9033

    Silicone Automotive Heater Hose - Blue

    6mm - 32mm

    Silicone Automotive Heater Hose - Blue

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    £19.32 INC VAT
    £16.10 EXC VAT

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  • REF #9035

    90 Degree Silicone Radiator Coolant Elbow Hose

    6mm - 152mm

    90 Degree Silicone Radiator Coolant Elbow Hose

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    £20.38 INC VAT
    £16.98 EXC VAT

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  • REF #9037

    General Purpose EPDM Rubber Suction & Delivery Hose

    19mm - 204mm

    General Purpose EPDM Rubber Suction & Delivery Hose

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    £23.17 INC VAT
    £19.31 EXC VAT

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  • REF #9036

    SUN 90 Degree Elbow Radiator Hose

    10mm - 76mm

    SUN 90 Degree Elbow Radiator Hose

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    £7.70 INC VAT
    £6.42 EXC VAT

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  • REF #8220

    Smooth White Food Quality Dairy Washdown Hose

    10mm - 25mm

    Smooth White Food Quality Dairy Washdown Hose

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    £7.09 INC VAT
    £5.91 EXC VAT

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  • REF #9045

    General Purpose EPDM 20 bar rubber delivery hose

    10mm - 76mm

    General Purpose EPDM 20 bar rubber delivery hose

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    £27.36 INC VAT
    £22.80 EXC VAT

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  • REF #2026

    45 Degree Elbow Rubber Radiator Hose

    10mm - 76mm

    45 Degree Elbow Rubber Radiator Hose

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    £7.70 INC VAT
    £6.42 EXC VAT

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Getting the Temperature Rating Right

The failure mode for a radiator hose that's past its best is predictable. It hardens, cracks, or swells at the clamp points, and then it splits under the pressure and temperature of a running engine. Usually at a bad time. Preventive replacement on a known service interval is far cheaper than a roadside breakdown or an overheated engine.

For automotive cooling systems, EPDM rubber is the standard material. It handles the ethylene glycol in coolant, stays flexible down to low temperatures, and has good heat resistance for standard operating ranges. Silicone hose offers a higher temperature ceiling and a longer service life, which is why it's common in performance and motorsport applications, though it costs more. For standard road cars, quality EPDM is the right answer.

A hot water hose for heating and industrial circuits has different requirements. Temperature rating is the main consideration, followed by pressure and the media being carried. A domestic heating circuit runs at modest pressure and temperature. An industrial steam or process hot water system is a different spec entirely; see the Steam Hose collection if you're in that territory.

Bore diameter and bend radius matter for radiator hoses. Moulded hoses are shaped to fit a specific routing. A straight hose is cut to length and bent into position with clips. Make sure the bend doesn't kink the bore. Understand more about the bend radius in our guide.

Orders over £200 to England and Wales qualify for free delivery, with same-day dispatch on most in-stock lines.

Frequently Asked Questions

What's the difference between radiator hose and coolant hose?

They're the same thing: a hose that carries coolant between the radiator and engine. The terms are used interchangeably.

Should I use rubber or silicone radiator hose?

Rubber EPDM is fine for standard automotive use. Silicone handles higher temperatures and has a longer service life but costs more. For performance or track use, silicone is worth it.

How do I know when to replace a radiator hose?

Squeeze the hose when the engine is cold. It should feel firm and slightly flexible. If it's hard and brittle, cracked on the surface, or soft and spongy, replace it.

What bore size do I need?

Match the hose bore to your pump port size. For longer runs or high flow rates, go up a size to reduce restriction and pressure drop.

Do you sell radiator and hot water hoses near me?

The Hosemaster delivers to all UK mainland addresses. Orders over £200 to England and Wales qualify for free delivery, with 1–2 day delivery and same-day dispatch on most in-stock lines.