Lisle Truck Brake Cage Bolt Socket 3/4" — 5" Extra‑Deep, 1/2" Drive, Impact‑Ready

The Lisle 49000 is a 3/4" extra-deep socket engineered to free truck air brake cage bolts and remove air brake boosters quickly and safely.

When servicing heavy-duty air brakes, access and torque tools must match the job. The Lisle 49000 was designed specifically for the cage bolt on truck air brake systems: its extra-deep body and compatible drive options let technicians reach recessed fasteners, spin off boosters, and work with impact tools without modifying sockets or adapters. Built for 1/2" drive tools and a 7/8" hex interface, it fits common shop setups and helps reduce downtime during brake maintenance.

How does this socket reach and remove cage bolts in tight brake assemblies?

The Lisle 49000 has an overall length of 5" and an inside depth of 4-1/2", letting the socket engage bolts recessed within the brake cage. Its extra depth prevents the tool from bottoming out while still delivering full engagement on the bolt head.

• 5" overall length with a 4-1/2" internal reach for deep-set fasteners
• 3/4" socket diameter sized for typical cage bolts on trucks
• Extra-deep wall thickness for stronger contact on bolt faces

Can I use the Lisle 49000 with common shop tools and an impact wrench?

Yes—this socket is made to work with standard 1/2" drive ratchets and impact tools, and it also fits a 7/8" hex where required. Its construction tolerates the demands of pneumatic and electric impact wrenches when used within recommended torque ranges.

• Compatible with 1/2" square drives and common breaker bars
• Accepts 7/8" hex inputs for alternate tool setups
• Designed for use with impact wrenches when applied correctly

Will this socket help when replacing an air brake booster?

The socket is sized and deep enough to remove cage bolts and free the air brake booster for service or replacement. By providing positive contact and reach, it simplifies booster removal without improvised extensions or risky hammering.

• Loosens cage bolt to unlock the air brake assembly
• Enables removal of the air brake booster for replacement
• Reduces need for additional adapters or makeshift tools

What are the practical shop benefits of adding this socket to my tool kit?

Having a purpose-built socket like the Lisle 49000 saves time and reduces wear on fasteners and surrounding components. It improves safety by minimizing slipping and rounding, and its impact-ready design matches professional service environments.

• Saves technician time during brake service and booster swaps
• Protects bolt heads from rounding with full contact engagement
• Compact profile stores easily in mechanic toolboxes or carts

Who is this for? The Lisle 49000 is aimed at fleet mechanics, heavy-vehicle technicians, and serious DIYers who service air-braked trucks and need a reliable, deep-reach socket for cage bolts and booster removal. It’s a practical addition to any shop that handles commercial brake maintenance and prefers tools tailored to common heavy-duty fasteners.