Zumbrota Drivetrain

8.6-Inch Rear Axle Assembly 3.73 Ratio Positraction

$2,010.89

SKU: RAA435-1955C-P

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

Description

The Zumbrota Drivetrain RAA435-1955C-P is a remanufactured rear axle assembly engineered for 1999-2005 GM trucks. This comprehensive assembly is built around an 8.6-inch axle, featuring a 3.73 gear ratio and a Positraction/Limited Slip Differential for enhanced traction and performance. Zumbrota Drivetrain emphasizes quality in its remanufacturing process. This axle assembly is built to order, ensuring it meets specific standards before shipment. The company also offers various shipping options, including same-day dispatch for quick delivery and free shipping on orders over $199, with all reman parts shipping for a flat $299 fee. Expedited shipping is also available at checkout. Customers should be aware of a refundable core charge of +$400, which is an upfront deposit for remanufactured parts. This charge is returned upon receipt of the old, salvageable part for recycling or rebuilding. Detailed core return instructions are available.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandZumbrota Drivetrain
Part NumberRAA435-1955C-P
CategoryDrivetrain

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy