Product Summary

Universal Fit, 4" Tube O.D., Aluminum, Polished

    Key Specs

    MFG. Part #747
    BrandSpectre Performance
    Tube O.D.4"
    Material TypeAluminum

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    Spectre Performance 747 Details

    Spectre Air Intake Kits are available for a number of applications and are designed to fit your classic muscle car. Manufactured from high quality polished aluminum, the plenum fits carburetors and TBI throttle bodies with a 5-1/8 inch inlet. The plenum attaches to the 4 inch outside diameter aluminum air intake tube. The tube is Spectre part 97990 which makes a 90 degree bend with a 6 inch leg and it can be installed in either direction giving you multiple options for an air filter to be positioned with your engine bay. The air filter is not included but the air intake tube can accommodate any clamp-on air filter that fits a 4 inch outside diameter tube. Always check for proper clearance between the neck of the carburetor/TBI and the bottom of the hood before closing the hood. 2 worm gear clamps and a coupler are included to complete installation.


    • Fits 5-1/8 inch inlets on TBI throttle bodies and carburetors
    • Air intake tube has 6 inch leg with a 90 degree bend
    • Air filter not included
    • Polished aluminum finish
    • Easy to install with common hand tools
    • Low profile air cleaner hold down nut not included - shown in photo above for reference only (available separately as # 465-4208)
    • Cast aluminum plenum


    Spectre Performance 747 Specifications

    MFG. Part #747
    BrandSpectre Performance
    Tube O.D.4"
    Material TypeAluminum
    GTIN Code089601007472
    Clamp MaterialStainless steel
    Clamp StyleWorm Gear
    Intake Pipe FinishPolished
    Intake Pipe MaterialAluminum
    Oil Amount35ml
    Neck Flange5.125"
    Angle90 degree