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    Sale!

    Eaton Detroit Truetrac Helical Limited-Slip Differential | GM 7.5in 10-Bolt 26-Spline | 911A415

    Vendor: Eaton
    Part Number: 911A415
    Save $57.39
    Sale Price $659.99 Regular Price $717.38

    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 Eaton Detroit Truetrac is a helical gear-driven limited-slip differential that maximizes available traction while sharpening handling and drivability. It works smoothly and automatically, needs no maintenance, and suits street, tow, and trail use without the on/off behavior of a locker. This unit is built for the GM 7.5in 10-bolt axle.

    • Type: Detroit Truetrac Helical Limited-Slip Differential
    • Axle: GM 7.5in 10-bolt
    • Ring gear diameter: 7.5in
    • Axle shaft diameter: 1.16in
    • Spline count: 26
    • Gear ratio: 3.08 and down
    • Part number: 911A415

    Axle Fitment

    • Fits the GM 7.5in 10-bolt with 26-spline axle shafts (ring gear 7.5in, axle shaft diameter 1.16in), covering 1975-1989 GM 7.5in 10-bolt applications at 3.08 and down ratios. Confirm your axle and spline count.

    FAQ

    What axle does the Eaton 911A415 fit?

    It is built for the GM 7.5in 10-bolt with 26-spline axle shafts and a 7.5in ring gear, covering 1975-1989 GM 7.5in 10-bolt applications.

    What gear ratios does part 911A415 work with?

    This carrier is set up for 3.08 and down ratios on the GM 7.5in 10-bolt. Confirm your ring-and-pinion ratio before ordering.

    Does the Detroit Truetrac need maintenance?

    No. The Truetrac is a gear-driven helical limited-slip that operates automatically and needs no clutch service or additive.

    Will it work on the street and off-road?

    Yes. The Detroit Truetrac operates smoothly and quietly for street, tow, and trail use without the on/off behavior of a locker.

    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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