Zumbrota Drivetrain

Remanufactured Axle Assembly 11.5" Full Floating 3.42 Posi

$4,243.89

SKU: RAA435-2288A

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Zumbrota Drivetrain RAA435-2288A is a remanufactured AAM 11.5" axle assembly designed for specific 2012 Ram 2500 and 3500 SRW 4WD models with a 3.42 gear ratio and Posi differential. This axle assembly is rebuilt to high standards of precision and reliability. Zumbrota Drivetrain thoroughly inspects all housings for straightness, cracks, and surface wear, and all tubes are straightened to OEM specifications. Internally, all components are inspected, including ring and pinions, gears, clutches, and carriers. Bearings, seals, crush sleeves, pinion nuts, and shims are all replaced with new parts. The gear setup includes establishing correct rolling torque with inch-pound measurements for optimal setup and longevity, along with setting the proper gear backlash for lubrication and quiet operation. The housings are cleaned using a state-of-the-art hydro blasting and rinsing process to restore an OEM finish. Specifications include a full floating axle type, a 3.42 gear ratio, and Posi differential. The axle cover is included, but differential fluid is not. The product comes with a 2-year warranty.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandZumbrota Drivetrain
Part NumberRAA435-2288A
CategoryDrivetrain

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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