• ADV50-8505.jpg
    • Advance Adapters 700R4 to TH350 Transfer Case Quick Adapter, 4WD | 50-8505
    • Advance Adapters 700R4 to TH350 Transfer Case Quick Adapter, 4WD | 50-8505
    • ADV50-8505.jpg

    Advance Adapters 700R4 to TH350 Transfer Case Quick Adapter, 4WD | 50-8505

    Vendor: Advance Adapters
    Part Number: 50-8505
    $111.96

    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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    Product DetailsFAQReviewsRelated Products

    This quick adapter lets a GM 700R4 automatic overdrive transmission replace a 4WD GM TH350 transmission while retaining the transfer case's stock input location, so the factory transfer case can bolt straight up without relocation brackets or a modified crossmember.

    Specifications:

    • Adapter allows a GM 700R4 automatic transmission to replace a 4WD GM TH350
    • Retains the factory transfer case mounting location for a straightforward swap
    • Built for 4WD applications
    • Part Number: 50-8505

    FAQ

    What does the Advance Adapters 50-8505 do?

    It adapts a GM 700R4 automatic transmission so it can replace a 4WD GM TH350 transmission while keeping the transfer case in its stock location.

    Do I need to relocate the transfer case to use this adapter?

    No. The adapter is designed to retain the stock transfer case mounting position, avoiding the need for relocation brackets.

    Is this adapter for 2WD or 4WD applications?

    4WD applications only, where a factory TH350 transmission is being replaced with a 700R4.

    Why would someone swap a TH350 for a 700R4 in a 4WD truck?

    The 700R4 adds an overdrive gear the TH350 doesn't have, improving highway cruising and fuel economy while keeping the original transfer case setup.

    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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