Zumbrota Drivetrain

GM 8.5-inch Rear Axle Assembly 3.73 Ratio G80 Posi Traction

$1,749.89

SKU: RAA435-1869B

In Stock
In Stock
Ships by Sep 1
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Zumbrota Drivetrain RAA435-1869B is a meticulously remanufactured GM 8.5-inch rear axle assembly, engineered for precision and reliability. This unit is configured with a 3.73 gear ratio and a G80 Posi Traction differential, offering enhanced traction capabilities for demanding conditions. Designed specifically for the 1996-2002 Chevrolet Express 1500 and GMC Savana 1500, this rear axle assembly undergoes a rigorous remanufacturing process. Zumbrota Drivetrain ensures the integrity of the unit by inspecting and straightening all tubes to OEM specifications. Please note that this assembly does not include hubs, brakes, backing plates, or axle shafts, and these components will need to be sourced separately. This remanufactured axle assembly is built to order and typically ships when ready. Zumbrota Drivetrain offers various shipping options, with standard delivery estimated at 1-2 days for most locations. Expedited shipping is also available at checkout. A refundable core charge of $400 applies, which is credited back upon the return of your old, salvageable part for recycling or rebuilding. Detailed core return instructions are available on their website.

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 NumberRAA435-1869B
CategoryDrivetrain

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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.

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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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