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EARLS Speed-Flex Hyperfirm® Pre-Made Hose

Speed-Flex Line 4 AN Female Swivel Both Ends Hose Size 4 Length 24.

PART# 64191924ERL

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Our factory assembled hoses are made from the same SPEED-FLEX stainless steel braid protected hose of extruded PTFE that is the world standard of the racing industry for flexible brake, clutch and instrument hoses. Hoses are assembled with Earl''s SPEED-FLEX crimp or swaged permanently installed hose ends. Each hose is pressure tested to 4,000 psi.


  • Pressure Tested To 4000 PSI
  • For Instrument Hoses
  • For Flexible Brake & Clutch Hoses
  • Extruded PTFE
  • Standard Of Racing Industry
  • Firmer Brake Feel


Emission Code5
Fluid TypeAutomatic Transmission Fluid
Brake Fluid
Pump Gas
Race Gas
Fluid Type Rating - Automatic Transmission Fluid5 out of 5 Rating
Fluid Type Rating - Bio-Fuels5 out of 5 Rating
Fluid Type Rating - Brake Fluid5 out of 5 Rating
Fluid Type Rating - Coolant5 out of 5 Rating
Fluid Type Rating - Diesel5 out of 5 Rating
Fluid Type Rating - E855 out of 5 Rating
Fluid Type Rating - Methanol/Alcohol5 out of 5 Rating
Fluid Type Rating - Oil5 out of 5 Rating
Fluid Type Rating - Power Steering Fluid5 out of 5 Rating
Fluid Type Rating - Pump Gas5 out of 5 Rating
Fluid Type Rating - Race Gas5 out of 5 Rating
Fluid Type Rating - Vacuum1 out of 5 Rating
Hose End #14 AN FEMALE
Hose End #24 AN FEMALE
Hose End FinishElectroless Nickel Plated
Hose End MaterialSteel
Hose Outer MaterialStainless Steel
Hose Size4 AN
Inside Diameter.173"-.203"
Length24 In.
Max Working PSI2000 PSI
Min. Bend Radius1.5"
Outside Diameter.304"-.343"
Product TypeHose Assembly
PTFE Wall Thickness.040"
Submersible in FuelYes
Temperature Range-65⁰ to 450⁰ F
Part Number64191924ERL



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

We have independent test lab reports on file showing that prototype assemblies exceeded D.O.T. recommendations in all categories. The only continuing test program however, is a 4000 P.S.I. hydrostatic pressure test of every hose assembly that we make. We do not claim that any individual hose assembly is certifiable to D.O.T. standards, and we therefore must advise you that they are sold for off-road applications only. We make no claim of usability or suitability for highway or road use. PTFE brake hoses must be installed by an experienced professional mechanic. After installation each hose must be clean and free flowing. There must be no possibility that the installed hose assemblies can be stretched, crimped, or kinked under any conditions of wheel travel and steering angle. As with any hose installation, periodic inspection of hose condition is essential.
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