Zumbrota Drivetrain

Dana Spicer 30 27 Spline Differential Block-Off Kit

$76.00

SKU: YA W39147-KIT

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

Description

The Yukon Vacuum Disconnect Block-Off Kit is engineered to replace the factory vacuum disconnect system on Dana Spicer 30 differentials. This kit is specifically designed for axles with 27 splines. Included in the kit are a block-off plate, a gasket for a proper seal, and axle seals. The technical notes specify that the passenger side seal will install behind the carrier bearing. Two seals are provided to accommodate variations in axle tube thickness, with only one being used per installation. Crucially, these seals do not install in the original location of the disconnect seal. This kit is manufactured by Yukon Gear and Axle and is identified by part number YA W39147-KIT.

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 NumberYA W39147-KIT
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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