Drivetrain› Differentials and Rear-End Components

Zumbrota Drivetrain

Rear Axle Assembly 11.5-Inch 4.10 Ratio Posi Traction

$3,205.89

SKU: RAA435-2162B

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Zumbrota Drivetrain RAA435-2162B is a remanufactured axle assembly featuring an AAM 11.5-inch ring gear with a 4.10 ratio and Posi Traction. It is a full-floating rear axle assembly and includes the cover. All bearings, seals, crush sleeves, pinion nuts, and shims are replaced during the remanufacturing process. Housings are cleaned, tested for cracks and wear, and tubes are straightened to OEM specifications.
Show original supplier description
The Zumbrota Drivetrain RAA435-2162B is a remanufactured axle assembly designed for precision and reliability. It features an AAM 11.5-inch ring gear with a 4.10 ratio and Posi Traction, making it suitable for applications requiring enhanced traction. The assembly is a full-floating rear axle type and comes with the necessary cover. During the remanufacturing process, Zumbrota Drivetrain replaces 100% of bearings, seals, crush sleeves, pinion nuts, and shims to ensure optimal performance and longevity. Each axle assembly undergoes rigorous inspection. Housings are cleaned using a state-of-the-art hydro blasting and rinsing process to restore an OEM finish. They are also tested for surface wear and cracks, and tubes are inspected for straightness to meet OEM specifications. Internal components, including ring and pinion gears, internal gears, clutches, and carriers, are fully inspected and tested. Correct rolling torque is established using inch-pound measurements for precise setup, and proper gear backlash is set to ensure quiet operation and adequate lubrication. This axle assembly does not include hubs, brakes, backing plates, or axle shafts. While the listing specifies "With Posi Traction," a related listing for "w/o Posi Traction" exists, indicating a need to verify specific model compatibility. It is built to order and ships when ready.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandZumbrota Drivetrain
Part NumberRAA435-2162B
CategoryDrivetrain

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

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.

View Full Return Policy

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy