Drivetrain› Differentials and Rear-End Components

Dana

KIT-DIFF ASSY

$2,815.67

SKU: D00O 401KD100-X

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
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Overview

The World American 1665-325-C Power Divider Kit (cross-reference MPN 401KD100-X) is an aftermarket power divider kit for Dana/Eaton N400 International N340 & N400 differentials. It is designed to replace the original power divider in heavy-duty truck applications. The kit is compatible with various alternate part numbers, including N400PDK, VTC-580A, and 1665-325-C (Navistar).
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KIT-DIFF ASSY

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

BrandDana
Part NumberD00O 401KD100-X

Videos

Spicer Power Divider

Spicer Power Divider
Installing power divider on a big truck

Installing power divider on a big truck

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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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