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Scion xA Engine Performance Parts

Upgrade Your 2004-2006 Scion xA Engine Performance

Our collection of engine performance parts for the 2004-2006 Scion xA is built for your daily driver or weekend project. Whether you're looking to increase horsepower, improve throttle response, or enhance overall reliability, you'll find curated components designed for precise fitment and lasting performance. From high-flow intakes and filters to ignition upgrades and tuning support, these parts help unlock your vehicle’s full potential.

Designed specifically for your xA, these upgrades deliver noticeable improvements in responsiveness and efficiency. You can expect smoother acceleration, better fuel economy, and a more engaging driving experience. Our selection emphasizes quality brands and trusted aftermarket solutions that meet the demands of passionate owners and enthusiasts alike.

Explore our range of engine upgrades and tune your xA for better power, response, and dependability. Shop engine performance parts for your xA at FastScions.

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566 Results

AEM 340LPH 65mm Fuel Pump Kit w/o Mounting Hooks - Ethanol Compatible
AEM 340LPH 65mm Fuel Pump Kit w/o Mounting Hooks - Ethanol Compatible
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AEM 340LPH 65mm Fuel Pump Kit w/o Mounting Hooks - Ethanol Compatible

AEM

Regular price $168.95 $149.95 11% off

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AEM High Volume Fuel Filter 10 Micron -6AN ORB: Fits Most Models
AEM High Volume Fuel Filter 10 Micron -6AN ORB: Fits Most Models
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AEM High Volume Fuel Filter 10 Micron -6AN ORB: Fits Most Models

AEM

Regular price $114.95 $101.95 11% off

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AEM Ignition Coil: Fits Most Scion xA/xB/tC/xD/iQ/iA/iM
AEM Ignition Coil: Fits Most Scion xA/xB/tC/xD/iQ/iA/iM
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AEM Ignition Coil: Fits Most Scion xA/xB/tC/xD/iQ/iA/iM

AEM

Regular price $51.83 $46.07 11% off

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AEM Ignition Coil: Fits Most Scion xA/xB/tC/xD/iQ/iA/iM Models
AEM Ignition Coil: Fits Most Scion xA/xB/tC/xD/iQ/iA/iM Models
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AEM Ignition Coil: Fits Most Scion xA/xB/tC/xD/iQ/iA/iM Models

AEM

Regular price $51.83 $46.07 11% off

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per 

AEM Throttle Control Module: Multiple Subaru Fitments
AEM Throttle Control Module: Multiple Subaru Fitments
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AEM Throttle Control Module: Multiple Subaru Fitments

AEM

Regular price $312.95 $277.95 11% off

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AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2: Fits Most Models
AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2: Fits Most Models
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AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2: Fits Most Models

AEM

Regular price $128.95 $113.95 12% off

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AEM Water / Methanol Injection Kit V2 (up to 35psi) w/ 1 Gallon Tank Universal: Fits Most Models
AEM Water / Methanol Injection Kit V2 (up to 35psi) w/ 1 Gallon Tank Universal: Fits Most Models
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AEM Wideband O2 Sensor Bosch LSU 4.9: Fits Most Models
AEM Wideband O2 Sensor Bosch LSU 4.9: Fits Most Models
Sale

AEM Wideband O2 Sensor Bosch LSU 4.9: Fits Most Models

AEM

Regular price $168.95 $149.95 11% off

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AFE Magnum FLOW Pro 5R Air Filter: Scion xA / xB 2004 - 2006
AFE Magnum FLOW Pro 5R Air Filter: Scion xA / xB 2004 - 2006
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Air Lift Performance Compressor Harness: Fits Most Models
Antigravity Batteries Bluetooth Battery Tracker Plus: Fits Most Models
Antigravity Batteries Bluetooth Battery Tracker Plus: Fits Most Models

Antigravity Batteries Bluetooth Battery Tracker Plus: Fits Most Models

Antigravity Batteries

$49.99

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Antigravity Batteries Lithium Car Battery: Fits Most Models
Antigravity Batteries Lithium Car Battery: Fits Most Models

Antigravity Batteries Lithium Car Battery: Fits Most Models

Antigravity Batteries

$449.99

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Upgrade Your 2004-2006 Scion xA with Performance Engine Parts for Enhanced Power and Reliability

Our collection of engine performance parts for the 2004-2006 Scion xA is designed to help you unlock your vehicle’s full potential. Whether you're aiming for increased horsepower, improved throttle response, or greater dependability, these curated components deliver precise fitment and lasting performance. Perfect for daily drivers or weekend enthusiasts, these upgrades elevate your driving experience.

What are the benefits of engine performance parts for the Scion xA?

Upgrading your engine components can lead to noticeable improvements in acceleration, responsiveness, and fuel efficiency. High-quality parts such as intake systems, filters, and ignition upgrades optimize airflow and combustion, translating to smoother power delivery. These enhancements not only boost performance but also contribute to the overall reliability of your vehicle over time.

  • Enhanced throttle response for quicker acceleration
  • Increased horsepower and torque potential
  • Better fuel economy with efficient combustion
  • Long-lasting components built for daily use

How do I choose the right engine upgrades for my Scion xA?

Selecting the appropriate performance parts depends on your driving goals and the condition of your vehicle. Consider your primary use—whether daily commuting or weekend tuning—and match parts accordingly. Compatibility, quality, and brand reputation are key factors to ensure reliable gains and seamless installation.

What supporting modifications should I consider for optimal results?

To maximize the benefits of your engine upgrades, consider supporting mods such as a high-flow intake, performance exhaust, and ECU tuning. Upgrading your ignition system and ensuring proper fueling can also improve overall engine response. Shop the collection at FastScions to find all the essential parts needed for a comprehensive upgrade that enhances power, response, and dependability.

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