Ford 351W Windsor Sidedraft + FiTech Ultra EFI Fuel Injection System [Polished]

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MPN: 1-135-006-02 UPC: 840136572336
Available Extended Warranty Eligible
US $3,894.00

Build to Order


Discover the zenith of fuel injection innovation with our enhanced Downdraft 8 Stack EFI Intake Manifold System, now impeccably paired with FiTech's sophisticated computer technology. This upgraded combination elevates the standard in electronic fuel injection, offering an unmatched solution for a wide spectrum of vehicles, from everyday use to high-powered performance.


Part Number:1-135-006-02
Part Type:Fuel Injection Systems
Engine Block Style:Stock/OEM standard deck
Injection Style:8 Throttle body
Basic Operating RPM Range:Idle-7,000
Intake Trumpets:Intake Trumpets Included
Injectors Included:Yes
Fuel Rails Included:Yes
Throttle Body Included:8 Pieces
Base Material:Aluminum Casting
Base Finish:Polished
Quantity:Sold as a Kit
Notes:Includes FiTech Ultra EFI Management System and harness. Additionally, the kit comes with a comprehensive sensor kit and a set of injectors..


Engineered for peak efficiency and power, our system features a downdraft manifold designed for extraordinary throttle response and smooth engine operation across a diverse RPM range. FiTech's advanced EFI technology integration ensures the system intuitively adapts to your engine, striking a perfect balance of power and efficiency.

Key Features:

  • Seamless integration with FiTech’s self-tuning EFI technology, suitable for a range of applications from amateur to professional.
  • Durable construction with CNC machined, heat-treated 601 Cast aluminum.
  • Precision-engineered butterflies, each meticulously machined for its bore, mounted on centerless ground brass shafts with split screws for exceptional reliability.
  • O-ring seals on lower mounting faces for guaranteed leak-proof performance.
  • Customizable bell crank with an indexable eccentric cable pulley, fine-tuning the balance between low-speed drivability and full throttle efficiency.
  • Complete linkage set, including throttle stops, idle controls, lever arms, and joiner/balancer.

Inclusions and Compatibility:

  • Includes the necessary high-impedance injectors capable of supporting up to 800 horsepower, streamlining the installation process.
  • Features EV1 injector plugs, ensuring compatibility and performance.
  • Utilizes GM sensors for TPS, IAC, and CTS, and Bosch sensors for TMAP and O2, guaranteeing high-quality and reliable readings.
  • Designed to accommodate a wide range of engines, from standard rebuilt motors to custom-built racing engines.

Our Downdraft 8 Stack EFI Intake Manifold System, integrated with FiTech’s advanced computer technology and enhanced with top-tier sensors and injectors, offers a sophisticated, efficient, and powerful solution for electronic fuel injection. Elevate your vehicle's performance with this state-of-the-art EFI system, a testament to the pinnacle of engine technology.

Brand Information

Prop 65 Warning

This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

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