Zumbrota Drivetrain

Reman Rear Axle Assembly 3.08 Ratio 28 Spline

$1,799.89

SKU: RAA435-1215CE

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

Description

The Zumbrota Drivetrain Reman Rear Axle Assy is a meticulously rebuilt rear axle assembly designed for GM 10 Bolt 8.5 inch differentials. This unit features a 3.08 gear ratio, making it suitable for specific performance and driving characteristics. It is engineered for 28 spline axles and is designed for vehicles without Posi Traction. Please note that this assembly does not include hubs, brakes, backing plates, or axle shafts, and these components will need to be sourced separately. The axle assembly is remanufactured to high standards, with thorough inspection of all internal components, including ring and pinions, gears, clutches, and carriers. All bearings and seals are replaced, and gears are meticulously set for optimal tooth contact patterns, correct rolling torque, and proper backlash to ensure longevity and quiet operation. Housings are inspected for straightness and cracks, and tubes are straightened to OEM specifications. Zumbrota employs a rigorous cleaning process involving hydro-blasting and sandblasting, followed by a proprietary shot-peening deep cleaning method. This specific rear axle assembly is designed for 2WD applications and is compatible with 1978-1987 GM 1/2 ton trucks and 1978-1988 GM 1/2 ton Suburbans.

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 NumberRAA435-1215CE
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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