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Accessories & Specialty

  • AEM High Volume Fuel Rail Black Acura B18B1, B18C1 & B18C5, 25-100BK
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    AEM High Volume Fuel Rail Black Acura B18B1, B18C1 & B18C5, AEM-25-100BK

    $146.95
    AEM-25-100BK
    Add to Cart
  • AEM High Volume Fuel Rail, Honda F22A1, F22A4, F22A6, H22A1, H22A4 & H23A1, AEM-25-104BK
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    AEM High Volume Fuel Rail, Honda F22A1, F22A4, F22A6, H22A1, H22A4 & H23A1, AEM-25-104BK

    $149.95
    AEM-25-104BK
    Out of stock
  • AEM Tru-Time Adjustable Cam Gear Black 5-Bolt Mitsubishi, 23-831BK
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    AEM Tru-Time Adjustable Cam Gear Black 5-Bolt Mitsubishi, AEM-23-831BK

    $188.95
    AEM-23-831BK
    Add to Cart
  • AEM Tru-Time Adjustable Cam Gear, AEM-23-802BK
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    AEM Tru-Time Adjustable Cam Gear, AEM-23-802BK

    $124.95
    AEM-23-802BK
    Add to Cart
  • AEM Tru-Time Adjustable Cam Gear. Black. 5-Bolt
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    AEM Tru-Time Adjustable Cam Gear. Black. 5-Bolt, AEM-23-830BK

    $200.95
    AEM-23-830BK
    Add to Cart
  • AEM V2 Water/Methanol HD Controller Kit Internal MAP w 40psi, 30-3306
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    AEM V2 Water/Methanol HD Controller Kit Internal MAP w 40psi, AEM-30-3306

    $189.95
    AEM-30-3306
    Add to Cart
  • AEM V2 Water/Methanol Standard Controller Kit, AEM-30-3304
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    AEM V2 Water/Methanol Standard Controller Kit, AEM-30-3304

    $189.95
    AEM-30-3304
    Add to Cart
  • AEM V3 Water/Methanol Multi-Input Controller Kit, AEM-30-3305
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    AEM V3 Water/Methanol Multi-Input Controller Kit, AEM-30-3305

    $189.95
    AEM-30-3305
    Add to Cart
  • AEM Water/Methanol Injection 200psi Recirculation Pump 3/8 NPT Fittings, 30-3018
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    AEM Water/Methanol Injection 200psi Recirculation Pump 3/8 NPT Fittings, AEM-30-3018

    $199.95
    AEM-30-3018
    Add to Cart
  • AEM Wideband UEGO Replacement O2 SENSOR, 30-2001
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    AEM Wideband UEGO Replacement O2 SENSOR, AEM-30-2001

    $102.95
    AEM-30-2001
    Add to Cart
  • AEM X-Series OBDII Gauge, 30-0311
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    AEM X-Series OBDII Gauge, AEM-30-0311

    $163.95
    AEM-30-0311
    Add to Cart
  • AEM X-Series Temperature Gauge 100~300F / 40~150C Accessory Kit, AEM-30-0302-ACC
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    AEM X-Series Temperature Gauge 100~300F / 40~150C Accessory Kit, AEM-30-0302-ACC

    $19.95
    AEM-30-0302-ACC
    Add to Cart
  • AEM X-Series Wideband UEGO Controller Gauge Accessory Kit, 30-0300-ACC
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    AEM X-Series Wideband UEGO Controller Gauge Accessory Kit, AEM-30-0300-ACC

    $12.95
    AEM-30-0300-ACC
    Out of stock
  • ARP Headstuds ARP 1/4" Carrillo Replacement 1/4" CA625+ Rod Bolt Kit, 300-6709
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    ARP 1/4" Carrillo Replacement 1/4" CA625+ Rod Bolt Kit, 300-6709

    $277.72
    ARP-300-6709
    Out of stock
  • ARP Headstuds ARP 1/4" Carrillo Replacement ARP3.5 Rod Bolt Kit, 300-6609
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    ARP 1/4" Carrillo Replacement ARP3.5 Rod Bolt Kit, 300-6609

    $323.38
    ARP-300-6609
    Out of stock
  • ARP Headstuds ARP 3 S GTE Toyota 12Pt Head Stud Kit, 203-4204
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    ARP 3 S GTE Toyota 12Pt Head Stud Kit, 203-4204

    $186.72
    ARP-203-4204
    Out of stock
  • ARP Headstuds ARP 3/8" ARP3.5 Carrillo Replacement Rod Bolt Kit, 300-6602
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    ARP 3/8" ARP3.5 Carrillo Replacement Rod Bolt Kit, 300-6602

    $954.95
    ARP-300-6602
    Out of stock
  • ARP Headstuds ARP 426 Hemi 1/2" 12Pt Head Stud Kit, 245-4202
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    ARP 426 Hemi 1/2" 12Pt Head Stud Kit, 245-4202

    $347.13
    ARP-245-4202
    Out of stock

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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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