Zumbrota Drivetrain

Differential Gear Set with Posi Traction

$2,231.89

SKU: RAA435-2257A-P

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

Description

The Zumbrota Drivetrain RAA435-2257A-P is a remanufactured axle assembly specifically designed for GM 8.6-inch differentials. This unit comes equipped with a 3.23 gear ratio and features G80 Posi Traction for enhanced performance. This assembly is intended for 2007-2008 Chevrolet Silverado 1500 models that do not have the JL4 Active Brake Control option. It is compatible with models featuring JF3 or JL7 brake options and includes a 3.23 Posi Limited Slip Differential (LSD). During the remanufacturing process, Zumbrota Drivetrain ensures all tubes are inspected and straightened to OEM specifications, and housings are tested for cracks. They perform a 100% inspection of all internal components, including ring and pinion gears, internal gears, clutches, and carriers. Bearings, seals, crush sleeves, pinion nuts, and shims are all replaced to ensure longevity and proper function. This remanufactured axle assembly is built to order and ships as a complete unit. However, please note that it does not include hubs, brakes, backing plates, or axle shafts, which must be sourced separately. A refundable core charge of $400 applies to this purchase.

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 NumberRAA435-2257A-P
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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