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Earls UltraPro Hose End

UltraPro Hose End -6 Hose to 3/8" OE Fuel Rail. Crimp Style assembly & must be used w/ UltraPro -6 Hose. Includes (2) 1/8" NPT Ports (one w/ -4 Male Flare). Straight - Black.

PART# 681961ERL

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Earl's UltraPro Fuel Rail Hose Ends are crimp style hose ends that attach directly to the OEM style fuel rail. This special hose end eliminates the need for a special adapter and a standard style hose end. Shorter & slimmer in size than fuel rail adapter and hose end. Black anodized finish.


  • Crimp On Hose End - Attaches Directly to OEM Fuel Rail
  • Eliminates Special Adapters & Standard Hose End
  • Crimp Style Assembly - Requires Crimping Machine to Attach AN Hose
  • Crimp Sleeve Sold Separately
  • Fits Most Vehicles w/ 3/8" OEM Fuel Rail - SAE Standard Connection
  • UltraPro Hose is Ideal for Use w/ All Fuels
  • Includes -4 AN Flare & Extra 1/8" NPT Port - Ideal for Adding Fuel for Wet Nitrous Systems, Fuel Pressure Gauge, or Schrader Valve
  • Conforms to SAE J2044 Specifications


Adapter TypeHose End
Assembly MethodCrimp On
Compatible HoseUltraPro
Emission Code4
FinishAnodized Black
Hose End FamilyUltraPro - Crimp On
Hose End Series68
Hose End Size6 AN
Hose Size6 AN
Max Working Pressure250 PSI
Port Size(2) 1/8" NPT
Product TypeFuel Rail Hose End
Tube Size3/8"
Part Number681961ERL



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Tech Resources

This hose end must be used with Earls UltraPro Hose and Requires Crimp Style Assembly.
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      Some parts are not legal for use in California or other states with similar regulations.

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