Zumbrota Drivetrain

Remanufactured Rear Axle Assembly 9.5" 3.73 Positraction

$1,999.89

SKU: RAA435-1515B-P

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

Description

The Zumbrota Drivetrain Remanufactured Rear Axle Assembly is a comprehensive solution for replacing or upgrading the rear axle on 1988-1999 GM K1500 trucks. This unit comes complete with a 9.5-inch 14-bolt axle housing, pre-installed 3.73 ratio ring and pinion gears, and a Positraction limited-slip differential for enhanced traction. Designed specifically for 4WD models with 6-lug wheels, this remanufactured assembly ensures a direct fit and reliable performance. The "Posi" designation indicates a limited-slip differential, which helps distribute power to both rear wheels, improving traction in various driving conditions. This axle assembly includes the ring and pinion, simplifying installation by providing all necessary gearing components. Buyers should be aware that a core charge applies to this remanufactured part, which is refundable upon the return of the old, salvageable axle assembly. Zumbrota Drivetrain offers this unit built to order, with options for expedited shipping.

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 NumberRAA435-1515B-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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