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    • Speed Engineering 5-Wire Mass Air Flow Extension Harness 31-1004
    • Speed Engineering 5-Wire Mass Air Flow Extension Harness 31-1004
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    Speed Engineering 5-Wire Mass Air Flow Extension Harness — 1999–2008 GM Truck/SUV, 2001–2007 Corvette | 24" Plug & Play MAF Relocation | 31-1004

    Part Number: 31-1004
    Regular Price $14.99

    In Stock

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    The Speed Engineering 5-wire mass air flow extension is a 24" plug-and-play harness that adds length between the factory harness and the MAF housing. It is used to relocate the MAF housing in LS swaps and turbo builds where the sensor no longer sits where the factory wiring reaches.

    ⚠️ Important Notes:

    • Designed to work with MAF housings. MAF cards would need to be repinned

    Features:

    • 5-Wire Extension Harness
    • 24" Length
    • Plug and Play
    • MAF Housing Relocation: For LS swaps or turbo builds

    Vehicle Applications:

    Chevrolet Silverado (2WD & 4WD)

    • 1999 Chevrolet Silverado (2WD & 4WD)
    • 2000 Chevrolet Silverado (2WD & 4WD)
    • 2001 Chevrolet Silverado (2WD & 4WD)
    • 2002 Chevrolet Silverado (2WD & 4WD)
    • 2003 Chevrolet Silverado (2WD & 4WD)
    • 2004 Chevrolet Silverado (2WD & 4WD)
    • 2005 Chevrolet Silverado (2WD & 4WD)
    • 2006 Chevrolet Silverado (2WD & 4WD)
    • 2007 Chevrolet Silverado (2WD & 4WD)
    • 2008 Chevrolet Silverado (2WD & 4WD)

    Chevrolet Tahoe (2WD & 4WD)

    • 1999 Chevrolet Tahoe (2WD & 4WD)
    • 2000 Chevrolet Tahoe (2WD & 4WD)
    • 2001 Chevrolet Tahoe (2WD & 4WD)
    • 2002 Chevrolet Tahoe (2WD & 4WD)
    • 2003 Chevrolet Tahoe (2WD & 4WD)
    • 2004 Chevrolet Tahoe (2WD & 4WD)
    • 2005 Chevrolet Tahoe (2WD & 4WD)
    • 2006 Chevrolet Tahoe (2WD & 4WD)
    • 2007 Chevrolet Tahoe (2WD & 4WD)
    • 2008 Chevrolet Tahoe (2WD & 4WD)

    GMC Sierra (2WD & 4WD)

    • 1999 GMC Sierra (2WD & 4WD)
    • 2000 GMC Sierra (2WD & 4WD)
    • 2001 GMC Sierra (2WD & 4WD)
    • 2002 GMC Sierra (2WD & 4WD)
    • 2003 GMC Sierra (2WD & 4WD)
    • 2004 GMC Sierra (2WD & 4WD)
    • 2005 GMC Sierra (2WD & 4WD)
    • 2006 GMC Sierra (2WD & 4WD)
    • 2007 GMC Sierra (2WD & 4WD)
    • 2008 GMC Sierra (2WD & 4WD)

    GMC Yukon (2WD & 4WD)

    • 1999 GMC Yukon (2WD & 4WD)
    • 2000 GMC Yukon (2WD & 4WD)
    • 2001 GMC Yukon (2WD & 4WD)
    • 2002 GMC Yukon (2WD & 4WD)
    • 2003 GMC Yukon (2WD & 4WD)
    • 2004 GMC Yukon (2WD & 4WD)
    • 2005 GMC Yukon (2WD & 4WD)
    • 2006 GMC Yukon (2WD & 4WD)
    • 2007 GMC Yukon (2WD & 4WD)
    • 2008 GMC Yukon (2WD & 4WD)

    Cadillac Escalade EXT (2WD & 4WD)

    • 2002 Cadillac Escalade EXT (2WD & 4WD)
    • 2003 Cadillac Escalade EXT (2WD & 4WD)
    • 2004 Cadillac Escalade EXT (2WD & 4WD)
    • 2005 Cadillac Escalade EXT (2WD & 4WD)
    • 2006 Cadillac Escalade EXT (2WD & 4WD)
    • 2007 Cadillac Escalade EXT (2WD & 4WD)
    • 2008 Cadillac Escalade EXT (2WD & 4WD)

    Cadillac Escalade (2WD & 4WD)

    • 2002 Cadillac Escalade (2WD & 4WD)
    • 2003 Cadillac Escalade (2WD & 4WD)
    • 2004 Cadillac Escalade (2WD & 4WD)
    • 2005 Cadillac Escalade (2WD & 4WD)
    • 2006 Cadillac Escalade (2WD & 4WD)
    • 2007 Cadillac Escalade (2WD & 4WD)
    • 2008 Cadillac Escalade (2WD & 4WD)

    Chevrolet Avalanche (2WD & 4WD)

    • 2002 Chevrolet Avalanche (2WD & 4WD)
    • 2003 Chevrolet Avalanche (2WD & 4WD)
    • 2004 Chevrolet Avalanche (2WD & 4WD)
    • 2005 Chevrolet Avalanche (2WD & 4WD)
    • 2006 Chevrolet Avalanche (2WD & 4WD)
    • 2007 Chevrolet Avalanche (2WD & 4WD)
    • 2008 Chevrolet Avalanche (2WD & 4WD)

    Chevrolet Corvette

    • 2001 Chevrolet Corvette
    • 2002 Chevrolet Corvette
    • 2003 Chevrolet Corvette
    • 2004 Chevrolet Corvette
    • 2005 Chevrolet Corvette
    • 2006 Chevrolet Corvette
    • 2007 Chevrolet Corvette

    Chevrolet Trailblazer

    • 2003 Chevrolet Trailblazer
    • 2004 Chevrolet Trailblazer
    • 2005 Chevrolet Trailblazer
    • 2006 Chevrolet Trailblazer
    • 2007 Chevrolet Trailblazer
    • 2008 Chevrolet Trailblazer
    • 2009 Chevrolet Trailblazer

    FAQ

    What is this harness used for?

    It extends the 5-wire MAF connection by 24" so the MAF housing can be relocated in LS swaps or turbo builds.

    Does it work with standalone MAF cards?

    It is designed to work with MAF housings. MAF cards would need to be repinned to use this harness.

    How long is the extension?

    The extension harness is 24" long.

    Is any splicing required?

    No. It is a plug-and-play harness.

    Is this part street legal?

    No. Speed Engineering sells this extension harness as a race-only product intended for competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).


    ⚠️ Race Use Only: This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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