USA Standard Gear

4340 Chrome Moly Left Inner Axle Shaft, 36.13

$292.89

SKU: ZA W39529

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

Description

The USA Standard Gear ZA W39529 is a robust replacement axle shaft engineered for the front left inner position of Dana 44 differentials, specifically for 1969-1980 GM trucks. Constructed from high-strength 4340 Chrome Moly, this axle is built to withstand demanding driving conditions and offers superior durability compared to stock components. This axle shaft features 30 splines for secure engagement with the differential and is designed to accommodate a 5-760X universal joint. With a length of 36.13 inches, it ensures a precise fit for compatible applications. The direct replacement design simplifies installation, allowing for a straightforward swap from the original equipment. This USA Standard Gear axle is a direct fit for numerous GM 1/2 ton trucks and Suburbans from 1969 through 1980, including various K10 and K20 models. It is specifically designed for 4WD applications.

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

BrandUSA Standard Gear
Part NumberZA W39529
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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