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Ratcheting Flex Cage Bolt Wrench, 15/16-inch - Lisle

Part #: 39790

The Lisle 39790 Ratcheting Flex Cage Bolt Wrench, 15/16-inch, is engineered for professional technicians and mechanics working on heavy-duty commercial vehicles. This specialized tool provides efficient access and leverage for servicing air brake chambers on Class 7 and 8 trucks and trailers, often eliminating the need for wheel removal. Its design focuses on speed and maneuverability in confined spaces.

Key Features

  • Narrow Head Diameter: Specifically designed for tight clearance applications, allowing access to hard-to-reach cage bolts.
  • 15/16-inch 12-Point Socket: Precisely fits standard cage bolts found on air brake systems.
  • 72-Tooth Ratcheting Flex Head: Offers smooth operation and allows for angled access in confined areas, enhancing efficiency and reducing effort.
  • Extended 25-inch Handle: Provides significant leverage and reach, coupled with a comfortable rubber grip for improved control.
  • Professional-Grade Construction: Built by Lisle, a trusted manufacturer, ensuring durability and reliability for demanding shop environments.

Applications

This specialized wrench is indispensable for replacing air brake chambers on late model Class 7 and Class 8 commercial trucks and trailers equipped with Meritor and Bendix disc brakes. It enables technicians to perform this critical maintenance task without the time-consuming process of removing the wheel assembly, significantly reducing service time. The design also facilitates the loosening and tightening of cage bolts, which are essential for releasing spring brakes on air brake systems during maintenance or in emergency situations.

We have 13 in stock Inventory available from other suppliers, prices may be different
List: $153.32 Save: $80.13

$73.19

Free shipping on orders over $250
Lower 48 states and DC. Excludes freight and oversize items.
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  • Model: 423243
  • Shipping Weight: 2.06lbs
  • UPC: 083045397908
  • Manufacturers Part #: 39790
  • Manufactured by: Lisle
  • Also Known As: LIS39790, LS39790, LIS-39790, LI39790

This product was added to our catalog on Monday 04 May, 2026.

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