Saej20R3 Schlauch

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  • 90 Degree Silicone Elbow Hose Silicone Hose Auto Silicone Hoses 6mm Blue

    90 Degree Silicone Elbow Hose

    Von £7.10
    Von £7.10
  • 45 Degree Silicone Elbow Hose Silicone Hose Auto Silicone Hoses 6mm Blue

    45 Degree Silicone Elbow Hose

    Von £7.10
    Von £7.10
  • 135 Degree Silicone Elbow Hose Silicone Hose Auto Silicone Hoses 6mm Blue

    135 Degree Silicone Elbow Hose

    Von £7.10
    Von £7.10
  • 180 Degree Silicone Elbow Hose Silicone Hose Auto Silicone Hoses 6mm Blue

    180 Degree Silicone Elbow Hose

    Von £7.10
    Von £7.10
  • Silicone Reinforced Blanking Cap Silicone Hose Auto Silicone Hoses 4mm Blue

    Silicone Reinforced Blanking Cap

    Von £10.58
    Von £10.58
  • 1 Metre Straight Silicone Hose Silicone Hose Auto Silicone Hoses 6mm Black

    1 Metre Straight Silicone Hose

    Von £9.89
    Von £9.89
  • Silicone Rubber Caps Silicone Hose Auto Silicone Hoses 4mm Blue

    Silicone Rubber Caps

    Von £1.62
    Von £1.62
  • Rubber Coupling Hose Joiner 50/75/100mm Lengths Rubber Hoses Hoses UK

    Rubber Coupling Hose Joiner 50/75/100mm Lengths

    Von £2.12
    Von £2.12
  • Rubber Coupling Hose Joiner 50/75/100mm Lengths Rubber Hoses Hoses UK

    Rubber Coupling Hose Joiner 250/500/750mm Lengths

    Von £2.60
    Von £2.60
  • Continuous Silicone Hose Silicone Hose Auto Silicone Hoses 13mm 1 Metre Black

    Continuous Silicone Hose

    Von £15.31
    Von £15.31
  • Silicone Radiator 2 Ply Hose Silicone Hose Auto Silicone Hoses 1 Metre 6mm Blue

    Silicone Radiator 2 Ply Hose

    Von £4.98
    Von £4.98
  • Straight Reducing Silicone Hose Silicone Hose Auto Silicone Hoses

    Straight Reducing Silicone Hose

    Von £5.47
    Von £5.47
  • Silicone Vacuum Hose Silicone Hose Auto Silicone Hoses 3mm x 7mm 1 Metre Blue

    Silicone Vacuum Hose

    Von £1.01
    Von £1.01
  • 90 Degree Reducing Silicone Elbow Hose Silicone Hose Auto Silicone Hoses

    90 Degree Reducing Silicone Elbow Hose

    Von £5.90
    Von £5.90
  • 45 Degree Reducing Silicone Elbow Hose Silicone Hose Auto Silicone Hoses

    45 Degree Reducing Silicone Elbow Hose

    Von £6.58
    Von £6.58
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Saej20R3 Schlauch

SAEJ20R3-Schlauch für zuverlässigen Kühlmitteltransfer in Automobilanwendungen.

What does SAE J20 R3 mean?
It is the Society of Automotive Engineers standard for coolant and heater hose. R3 designates a heavy-duty, reinforced hose suitable for engine coolant service - the specification the great majority of original-equipment radiator and heater hoses are built to. When a hose carries this rating you know its construction, temperature capability and pressure margin have been tested to a recognised benchmark.

What is in this collection?
Everything in our range built to that standard - silicone straights, elbows in all four angles, reducers, reducing elbows, couplers, continuous coil hose and wire reinforced SuperFlex, plus rubber radiator and heater hose, moulded rubber elbows and coupling joiners, and the vehicle-specific coolant and intercooler hoses and kits that use J20 R3 material.

What temperature and pressure does it cover?
Our silicone hose to this standard runs -50C to +250C continuously, with working pressures from around 12.33 bar on the smallest bores down to 2.8 bar on the largest and burst up to 37 bar. Rubber hose to the same standard runs -30C to +120C. Both are glycol rated for standard antifreeze mixes.

Can I use J20 R3 hose for fuel or oil?
No. J20 R3 is a coolant and heater specification - both the silicone and the EPDM rubber versions swell and degrade in contact with petrol, diesel and oil. For hydrocarbons you need SAE J30 R6 hose, which is our fluorolined silicone and our rubber fuel and oil range. Check the specification on the product page before you order.

Does the standard tell me what size to buy?
No - the standard covers construction and performance, not dimensions. Order by internal diameter, matched to the outside diameter of the pipe stub the hose slides onto. Measure the pipe with vernier callipers rather than the old hose, which will have stretched in service and reads larger than the pipe it was on.

Is silicone or rubber better within this standard?
Both meet the standard; they differ in service life and temperature headroom. Rubber to J20 R3 is the like-for-like replacement at lower cost and runs to +120C. Silicone to the same standard runs to +250C and does not perish or harden with age. For a standard vehicle rubber is correct; for a hot-running or hard-to-access application, silicone.

  • Questions about Saej20R3 Schlauch?

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  • Need something bespoke?

    View our custom hose guide.

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