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🧾 Overview
The ARB Air Locker for Dana 60HD (35 spline, 4.56 & up) is one of the most trusted traction upgrades in the off-road world, designed to deliver 100% locking capability on demand while retaining normal street manners when disengaged.
Using a pneumatically activated locking system, this differential allows you to switch from an open differential to a fully locked axle with the flip of a switch—providing maximum traction in mud, rocks, sand, or snow.
When unlocked, it operates like a factory differential for smooth daily driving. When engaged, it forces both axle shafts to rotate together, ensuring maximum power delivery to both wheels—a major advantage in extreme off-road situations.
✔ Selectable air-actuated locking differential
✔ Provides 100% traction when engaged
✔ Maintains normal drivability when disengaged
✔ Designed for heavy-duty Dana 60 applications
✔ Ideal for rock crawling, mud, and extreme terrain
🛠 Installation
- Requires full differential disassembly and gear setup.
- Air system plumbing and compressor installation required.
- Professional installation strongly recommended.
📌 Specs
📌 Key Features & Benefits
- Selectable Locking Differential – Instantly switches between open and fully locked modes.
- Maximum Traction – Locks both axle shafts together for equal power delivery to both wheels.
- Air-Operated System – Pneumatic activation ensures reliable engagement under load.
- Heavy-Duty Construction – Built to handle extreme torque and off-road abuse.
- Street-Friendly Operation – Drives like stock when disengaged.
📘 Specifications
- Brand: ARB
- Product Type: Locking Differential
- Axle Type: Dana 60HD
- Spline Count: 35 Spline
- Gear Ratio Compatibility: 4.56 & Up
- Actuation Type: Air (Pneumatic)
- Compressor Required: Yes (Sold Separately)
- Differential Type: Selectable Locker
- Installation Type: Internal Differential Setup
- Sold As: Single
📦 What’s Included (What’s in the Box)
- Differential Components
- (1) ARB Air Locker Differential
- Air Line & Fittings
- Installation Hardware
🛡 Warranty
- ARB Limited Warranty (Typically 5-Year)
⚠️ Fitment Notes
- Universal (Dana 60HD Axles – 35 Spline)
⚠️ Fitment Notes
- ❗ Designed for Dana 60HD axles with 35 spline shafts
- ❗ Compatible with 4.56 and numerically higher gear ratios only
- ❗ Requires ARB on-board air compressor (sold separately)
- ❗ Professional setup recommended (gear setup + air system required)
- ❗ Not a direct bolt-in like external accessories—requires differential setup