Drivetrain› Differentials and Rear-End Components

TeraFlex

21C BRONCO(EXCL RAPTOR) DANA 44 REAR HD DIFFERENTIAL COVER

$185.99

SKU: T00T 3990844

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

21C BRONCO(EXCL RAPTOR) DANA 44 REAR HD DIFFERENTIAL COVER

MIA's Description

The TeraFlex 3990844 is a heavy-duty rear differential cover designed for the Dana 44 AdvanTEK (M220) rear axle. Constructed from 3/8" thick ductile iron, it provides robust protection against trail impacts. The cover features an upper fill/inspection port for easy maintenance and a fluid level port to fine-tune oil levels, especially on lifted vehicles. It is finished with a durable, UV-resistant powder coat.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandTeraFlex
Part NumberT00T 3990844

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Buy with Confidence

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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