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    Chevrolet Performance LS Cathedral-Port Truck Intake Manifold, Composite | 12638038

    Part Number: 12638038
    Regular Price $259.99

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    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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    This Chevrolet Performance intake manifold is the NNBS cathedral-port truck design and serves as a factory style replacement for the discontinued TBSS intake. It is a black composite manifold that uses the OEM throttle body flange and fits cathedral-port Gen III and Gen IV LS truck engines.

    Specifications:

    • Cathedral-port truck intake manifold (NNBS style)
    • OEM throttle body flange
    • Composite (plastic), black
    • Replacement for the discontinued TBSS intake
    • Fits GM LS-Series cathedral-port truck engines (Gen III/IV)
    • Sold individually (each)
    • Part number: 12638038

    Applications:

    • GM LS 4.8L cathedral-port truck engines (Gen III/IV)
    • GM LS 5.3L cathedral-port truck engines (Gen III/IV)
    • GM LS 6.0L cathedral-port truck engines (Gen III/IV)

    FAQ

    What engines does intake 12638038 fit?

    It fits GM LS-Series cathedral-port truck engines, including 4.8L, 5.3L, and 6.0L Gen III and Gen IV.

    What is it made of?

    It is a black composite (plastic) intake manifold.

    Does it use a factory throttle body?

    Yes. It uses the OEM throttle body flange.

    Is this a replacement for the TBSS intake?

    Yes. It is the NNBS cathedral-port truck intake that replaces the discontinued TBSS intake.

    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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