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    Sale!

    Eaton Detroit Truetrac Helical Limited-Slip Differential | Dana 30 Front 27-Spline, 7.2in Ring Gear | 912A585

    Vendor: Eaton
    Part Number: 912A585
    Save $55.92
    $642.99 $698.91

    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

    The Eaton Detroit Truetrac is a helical gear-driven limited-slip differential that makes the most of available traction and sharpens handling and drivability. It works smoothly and automatically, needs no maintenance, and suits street, tow, and trail use without the on and off behavior of a locker. This unit fits the Dana 30 front axle with 27-spline shafts and 3.73 and up ratios.

    • Type: Helical gear limited-slip differential
    • Axle: Dana 30 front
    • Ring gear diameter: 7.2in
    • Axle shaft diameter: 1.16in
    • Spline count: 27
    • Gear ratio: 3.73 and up
    • Part number: 912A585

    Axle Fitment

    • Fits the Dana 30 front axle, 27-spline, 3.73 and up ratios, found in 1967-2018 Chrysler and Dodge trucks and Jeep Cherokee, Wrangler, and JK. Confirm your axle and spline count.

    FAQ

    What axle does the 912A585 fit?

    It is built for the Dana 30 front axle with 27-spline shafts.

    Which vehicles use the Dana 30 front?

    It appears on Chrysler and Dodge trucks and Jeep Cherokee, Wrangler, and JK. Confirm your axle before ordering.

    What ratios are supported?

    It works with 3.73 and up (numerically higher) ratios.

    Does it work in a front axle?

    Yes. This Truetrac is set up for Dana 30 front axle use and operates automatically with no maintenance.

    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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