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    • TCI Premium Series Flexplate | GM SBC 400 External Balance 168-Tooth 10.75in | 399603
    • TCI Premium Series Flexplate | GM SBC 400 External Balance 168-Tooth 10.75in | 399603
    • TCI Premium Series Flexplate | GM SBC 400 External Balance 168-Tooth 10.75in | 399603
    • TCI399603.jpg

    TCI Premium Series Flexplate | GM SBC 400 External Balance 168-Tooth 10.75in | 399603

    Vendor: TCI Automotive
    Part Number: 399603
    Regular Price $109.95

    Currently out of 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 TCI 399603 is a Premium Series flexplate that replaces stock GM Small Block Chevy 400 externally balanced units. It carries a 10.75in bolt pattern with a 168-tooth ring gear and is spin balanced for vibration-free operation. A premium corrosion-resistant finish helps it outlast common budget flexplates, making it a durable upgrade for stock to mild performance vehicles.

    • Series: TCI Premium Series
    • Application: GM Small Block Chevy 400, external balance
    • Ring gear: 168 tooth
    • Bolt pattern: 10.75in
    • Balance: Spin balanced
    • Finish: Corrosion-resistant premium finish
    • Part number: 399603

    FAQ

    What does the TCI 399603 Premium Series flexplate replace?

    It replaces stock GM Small Block Chevy 400 externally balanced flexplates.

    What is the bolt pattern and tooth count on the 399603?

    It uses a 10.75in bolt pattern with a 168-tooth ring gear.

    Is the 399603 balanced?

    Yes. It is spin balanced for vibration-free operation on both internally and externally balanced engines.

    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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