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  • Phenix 45 Degree Reusable PTFE Hose End (All Sizes + Colors)
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    45 Degree Reusable PTFE Hose End (All Sizes + Colors)

    $21.70
    PHX-J01045-3-0
    Choose Options
  • QFS 5.0L Coyote Swap Fuel System for 1979-1997 Ford Mustang and Capri, Complete Performance Fuel System, HFP-FSYS1 QFS
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    5.0L Coyote Swap Fuel System for 1979-1997 Ford Mustang and Capri, Complete Performance Fuel System, HFP-FSYS1 QFS

    $969.98 - $1,013.98
    HFP-FSYS1-0-BC
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  • QFS Fuel Injector - QTY 4, OEM Replacement, QFS-INJ-102-4 QFS
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    60LB Fuel Injectors - QTY 4, EV1 60mm Length 630cc, OEM Replacement 107961, QFS-INJ-102-4 QFS

    $199.92
    QFS-INJ-102-4-BC
    Out of stock
  • QFS Fuel Injector - QTY 4, OEM Replacement, QFS-INJ-101-4 QFS
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    80LB 835cc Fuel Injectors - QTY 4, OEM Replacement FI11491, 109991, QFS-INJ-101-4 QFS

    $199.92
    QFS-INJ-101-4-BC
    Out of stock
  • QFS Fuel Injector - QTY 4, OEM Replacement, QFS-INJ-100-4 QFS
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    80LB 835cc Fuel Injectors - QTY 4, OEM Replacement FI114992, 110324, QFS-INJ-100-4 QFS

    $199.92
    QFS-INJ-100-4-BC
    Out of stock
  • Phenix 90 Degree Compression Swivel Hose End (All Sizes + Colors)
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    90 Degree Compression Swivel Hose End (All Sizes + Colors)

    $18.28 - $21.78
    PHX-J1090-3-0
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  • Phenix 90 Degree Reusable PTFE Hose End (All Sizes + Colors)
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    90 Degree Reusable PTFE Hose End (All Sizes + Colors)

    $21.70
    PHX-J01090-3-0
    Choose Options
  • AEM 100 PSIg Brass Sensor Kit, AEM-30-2131-100
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    AEM 100 PSIg Brass Sensor Kit, AEM-30-2131-100

    $79.95
    AEM-30-2131-100
    Add to Cart
  • AEM 22-Channel CAN Sensor Module, Harness Wires & Cable, 30-2212
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    AEM 22-Channel CAN Sensor Module, Harness Wires & Cable, AEM-30-2212

    $379.95
    AEM-30-2212
    Add to Cart
  • AEM 25" No-Weld O2 Sensor Mount, 30-2355-250
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    AEM 25" No-Weld O2 Sensor Mount, AEM-30-2355-250

    $60.95
    AEM-30-2355-250
    Add to Cart
  • AEM 400LPH E85-Compatible Double Barb Fuel Pump Kit, 50-1230
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    AEM 400LPH E85-Compatible Double Barb Fuel Pump Kit, AEM-50-1230

    $149.95
    AEM-50-1230
    Add to Cart
  • AEM 50 PSIa or 3.5 Bar Brass Sensor Kit, AEM-30-2131-50
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    AEM 50 PSIa or 3.5 Bar Brass Sensor Kit, AEM-30-2131-50

    $79.95
    AEM-30-2131-50
    Add to Cart
  • AEM Adjustable Fuel Pressure Regulator. Black. Acura & Honda Inline Flange with 90 Degree Return Line Fitting, AEM-25-303BK
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    AEM Adjustable Fuel Pressure Regulator. Black. Acura & Honda Inline Flange with 90 Degree Return Line Fitting, AEM-25-303BK

    $199.95
    AEM-25-303BK
    Add to Cart
  • AEM Air Temp Sensor DTM-Style Kit, AEM-30-2014
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    AEM Air Temp Sensor DTM-Style Kit, AEM-30-2014

    $61.95
    AEM-30-2014
    Add to Cart
  • AEM Boost Control Solenoid Kit, AEM-30-2400
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    AEM Boost Control Solenoid Kit, AEM-30-2400

    $124.95
    AEM-30-2400
    Add to Cart
  • AEM CAS Trigger Disk 50mm OD for Nissan RB25DET + Some RB26 AEM, 30-8761
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    AEM CAS Trigger Disk 50mm OD for Nissan RB25DET + Some RB26 AEM, AEM-30-8761

    $49.95
    AEM-30-8761
    Out of stock
  • AEM Classic Digital Temperature Gauge Kit, AEM-30-4402
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    AEM Classic Digital Temperature Gauge Kit, AEM-30-4402

    $194.95
    AEM-30-4402
    Add to Cart
  • AEM Digital Boost Gauge, AEM-30-4408
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    AEM Digital Boost Gauge, AEM-30-4408

    $249.95
    AEM-30-4408
    Add to Cart

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About Us

quantum fuel systems blk

QFS was born from a desire for freedom: the freedom to keep your ATV, dirt bike, car, or truck running with dependable, OEM-quality, and affordable fuel systems. We want you back on the road without breaking the bank. Skip the costly dealership—our replacement parts ship directly to you and are easy to install. Enjoy OEM performance with unbeatable US-based support and a lifetime warranty. Are you with us?

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