Zumbrota Drivetrain

GM 8.5-inch 3.73 Posi Traction Axle Assembly

$1,602.89

SKU: RAA435-1868-P

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

Description

The Zumbrota Drivetrain RAA435-1868-P is a remanufactured axle assembly designed for 1996-1997 GM S10 and S15 vehicles equipped with the 8.5-inch rear end. It features a 3.73 gear ratio and a G80 Posi Traction differential, specifically for models with the ZR2 option (w/o AWD). This assembly is built to exacting standards, ensuring reliability and performance. The remanufacturing process for this axle assembly involves a comprehensive inspection and refurbishment. All tubes are straightened to OEM specifications and inspected for surface wear and cracks. A thorough 100% inspection is conducted on all internal parts, including the ring and pinion, internal gears, clutches, and carrier. Furthermore, all wearable parts such as bearings, seals, crush sleeves, pinion nuts, and shims are replaced with new components. Each housing is meticulously cleaned using a state-of-the-art hydro blasting and rinsing process, restoring it to an OEM finish. The correct rolling torque is established using precise inch-pound measurements to ensure optimal setup and longevity. Please note that this assembly does not include hubs, brakes, backing plates, or axle shafts.

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 NumberRAA435-1868-P
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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