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GM 9.5 12 Bolt Rear, 2019 and newer
    GM 9.5 12 Bolt Rear, 2019 and newer
    Purchase GM 9.5 12 Bolt Rear, 2019 and newer

    • GM 9.5 12 Bolt Rear, 2019 and newer
       Part Number 11172

      • For 2019 and newer GM 1/2 ton trucks, SUVs and vans such as Silverado and Sierra 1500 with a 12 bolt rear differential cover.

      Prototype parts available now.

      Sign up for our email list below to receive updates on this product.

    Volume: 0.3 quarts over stock, approximately

    Dimensions: Click here for dimensions.

    Number of Bolts: 12 bolts

    Status: PML designed and manufactured some prototype rear differential covers for 2019 and newer Silverado and Sierra 1500 trucks and GM 1/2 ton SUVs and vans. We are collecting information and welcome suggestions and pictures. Email us at: yourcovers@pmli.com

    Some 2019 trucks and SUVs have this new differential and some have the same differential as the 2014 to 2018 trucks.

    The 12 bolt rear differential cover on 2014 to 2018/2019 vehicles looks similar but is slightly smaller and the area around the fill hole is slightly different. See SPECIFICATIONS section.

    We have heard that the ring gear is 9.5 or 9.75 and this new differential is made by GM, not American Axle (AAM).

    Benefits

    PML designed this cover with fins, drain, and a shape similar to stock.
    PML cover features  Click on image to view larger

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    This differential is found on some 2019 and newer Silverado and Sierra 1500. Similar Cadillac, Chevrolet, and GMC SUVs, trucks and vans may also have this differential.

    Always check your vehicle to verify configuration and clearance. Configurations vary.

    For the similar GM AAM 9.5, 9.76 12 bolt rear differential cover see PML Part Number 11129. PML Part Number 11129 works with 2014 to 2018 and some newer vehicles.

    No pictures of installations yet.

    Stock Cover and OEM Gasket Part Number

    This PML differential cover, part number 11172, is designed to replace this stock cover:
    GM 9.5 12 Bolt Rear Differential Cover  Click on image to view larger.

    Always check your vehicle to verify configuration and clearance for a larger, aftermarket differential cover.

    The OEM gasket part number is 84428297.

    Comparing 2014 to 2018 and 2019 and Newer Stock Covers

    GM 12 bolt rear differential covers compared   Click on image to view larger. Area around and below fill hole is different.

    Inside of PML Cover

    The inside of this PML differential cover follows a shape similar to that of the stock cover:
    Inside of PML GM 9.5 12 Bolt Rear Differential Cover  Click on image to view larger.

    Included with Package with PML Differential Cover

    With the differential cover, PML includes new mounting bolts and washers, a plug for the level check hole and a magnetic drain plug with a reuseable copper sealing washer.
    Inside of PML GM 9.5 12 Bolt Rear Differential Cover with bolts, drain plug  Click on image to view larger.