Drivetrain› Differentials and Rear-End Components

USA Standard Gear

9.25" Differential Axle, 31 Spline, 5x4.5" Bolt Pattern

$208.89

SKU: ZA C3723824

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Moderate — 2–4 hours

Overview

The USA Standard ZA C3723824 is a replacement axle designed for 1979 and older Chrysler trucks with a 9.25" differential. It features a 31-spline count and a 5 x 4.5" bolt pattern.

This axle measures 31 11/16" in length and is built for durability and performance. It is a direct replacement part for your vehicle's drivetrain.
Show original supplier description
The USA Standard ZA C3723824 is a replacement axle meticulously engineered for 1979 and older Chrysler trucks, specifically those equipped with a 9.25" differential. Constructed with durability in mind, this USA Standard axle boasts a 31-spline count and a 5 x 4.5" bolt pattern, critical specifications for proper integration with your existing differential and wheel hub assembly. The precise length of 31 11/16" is crucial for maintaining correct driveshaft alignment and suspension geometry. It is an ideal component for restoring or upgrading the drivetrain of your classic Chrysler truck, offering a balance of strength, precision, and value.

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 C3723824
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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