Drivetrain Differentials and Rear-End Components

ARB

AIRLOCKER,DANA80X,40SPL,H

$1,403.89

SKU: A00L RD177D

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

Moderate — 2–4 hours

Description

The ARB Air Locker RD177 is a pneumatically operated locking differential designed to provide 100% traction on demand for Dana 70X/80X axles. It features a 40-spline shaft and is compatible with 4.10 and down gear ratios. When activated by a 12-volt ARB Air Compressor (sold separately), it locks the differential gears, ensuring both axle shafts turn at the same rate for maximum traction. When unlocked, it functions as a conventional open differential, preserving on-road drivability and reducing driveline wear. The Air Locker boasts a durable, two-piece design with minimal moving parts for reliability, forged gears, a patented 'timed' locking mechanism for quick unlocking, and a steel-reinforced, elastomer-bonded annular seal for extreme temperatures. The kit includes the Air Locker differential, activation switch, solenoid valve, air line, and bulkhead fitting.

Fitment

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Specifications

BrandARB
Part NumberA00L RD177D

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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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