Zumbrota Drivetrain

Rear Axle Kit, 33.5" Length, 34 Spline, Left Hand

$218.89

SKU: ZA K630321

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

Description

The USA Standard Gear ZA K630321 is a rear axle kit engineered for Ford 9.75-inch differentials. This kit is specifically designed for the rear, left-hand (LH) position and boasts 34 splines, ensuring robust engagement with the differential. The axle measures 33.5 inches in length, and the integrated wheel bearing has an outer diameter of 2.53 inches. This comprehensive kit includes all the necessary components for a complete axle installation or replacement. You'll receive the axle itself, a new wheel bearing, a seal to protect the bearing, and 14mm studs along with matching lug nuts for secure wheel mounting. The product is manufactured by USA Standard Gear and is identified by SKU ZA K630321. Designed to fit Ford 9.75-inch differentials, this rear axle kit is a direct replacement or upgrade. The 5-lug pattern is standard for many Ford rear axle 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

BrandZumbrota Drivetrain
Part NumberZA K630321
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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