Lisle 3/4" Extra-Deep Truck Brake Cage Bolt Socket 5" Length, 1/2" Drive Impact-Compatible

The Lisle 49000 is a heavy-duty 3/4" extra-deep socket designed to safely unfasten truck air brake cage bolts and remove air brake boosters.

When working on large commercial vehicles, access and reach are often the difference between a quick repair and a frustrating teardown. The Lisle 49000 socket was engineered to fit the long recessed cage bolts used on truck air brake systems, providing the depth and drive compatibility technicians need to unlock and dismantle assemblies without rounding fasteners.

How does this socket make removing truck air brake cage bolts easier?

Its extra-deep profile reaches the full length of recessed cage bolts so you can apply torque directly to the fastener instead of the exposed head. The design reduces slip and protects bolt corners, letting you work faster and with more control.

• 3/4" internal bore sized for common truck cage bolts.
• Overall 5" length with 4-1/2" usable inside depth for long fasteners.
• Extra-deep geometry prevents rounding and improves engagement.
• Works cleanly on recessed or obstructed bolt locations.

Can I use the Lisle 49000 with power tools or other drive setups?

Yes — the socket accepts a 1/2" drive and also fits a 7/8" hex adapter, making it compatible with ratchets, breaker bars and impact wrenches. That flexibility lets you switch between hand torque and powered impact removal depending on bolt condition.

• Designed for use with 1/2" drive hand tools and power tools.
• Accepts 7/8" hex for alternative drive options.
• Durable construction tolerates impact wrench forces.

Will this socket help when replacing the air brake booster?

The Lisle 49000 is sized to remove cage bolts and clear the booster so the entire air brake booster assembly can be taken out for service or replacement. Its depth and drive compatibility make disassembly more straightforward on heavy vehicles.

• Removes fasteners that secure brake boosters to mounting surfaces.
• Provides clearance for booster extraction without additional tool modification.
• Simplifies steps in booster replacement and related repairs.

What are the physical specs and build qualities I should expect?

The socket measures 5" overall with 4-1/2" of internal reach, built to withstand shop use and the torque demands of truck brake work. Its fit and finish prioritize secure engagement to extend fastener life and reduce rework.

• Internal size: 3/4" socket opening suited for cage bolts.
• Overall length: 5"; inside usable length: 4-1/2".
• Constructed for impact compatibility and repeated use.

Who this is for: professional mechanics, fleet maintenance teams, and experienced DIYers who service medium- and heavy-duty trucks will find the Lisle 49000 an efficient specialty tool for air brake work. If you frequently encounter recessed cage bolts or need a reliable way to remove brake boosters, this socket reduces time and frustration while protecting fasteners during removal.