Sargent 68-4102 Chassis Assembly for AL-8866 & GL-8866 Exit Devices — Left Hand Reverse (LHR)

The Sargent 68-4102 is a factory-replacement chassis assembly engineered specifically for the Sargent 80 Series exit device platform. This internal operating chassis serves as the mechanical core of the exit device: when the push bar is depressed, the push rail transfers force directly to this chassis, which in turn retracts the latch bolt to allow immediate, code-compliant egress. Handing for this part is Left Hand Reverse (LHR).

This chassis is compatible with the following Sargent 80 Series device designations — the full model prefix is life-safety critical and these assemblies are not interchangeable across prefixes:

• AL-8866 — Alarmed exit device
• GL-8866 — Guarded Latch exit device

If your device carries a different prefix or series number, this chassis will not be the correct replacement. Always verify the complete model designation printed on your existing hardware before ordering.

Institutional-Grade Features & Benefits

• OEM Sargent Replacement Part: Manufactured to Sargent factory specifications, ensuring proper fit, function, and longevity within the 80 Series exit device system.
• Life-Safety Critical Component: The chassis assembly is the operational heart of the exit device, directly responsible for latch retraction upon push-bar actuation — making genuine OEM quality essential.
• Prefix-Specific Compatibility: Designed exclusively for AL- (Alarmed) and GL- (Guarded Latch) prefix 80 Series devices; model prefix compatibility is a life-safety requirement, not a preference.
• Correct Handing Matters: Supplied in Left Hand Reverse (LHR) — confirm door handing before purchase using the handing diagram provided with this listing.
• Restores Reliable Egress Performance: Replaces a worn or damaged chassis to return the exit device to full operating condition, supporting ongoing code compliance in commercial and institutional applications.
• Commercial & Institutional Grade: Built for high-traffic doors in schools, hospitals, government facilities, and commercial buildings where exit device reliability is mandatory.

Applications

• Replacement chassis for Sargent AL-8866 alarmed exit devices on LHR doors
• Replacement chassis for Sargent GL-8866 guarded latch exit devices on LHR doors
• Maintenance and repair of Sargent 80 Series exit hardware in commercial, institutional, and educational facilities
• Facilities management parts inventory for buildings equipped with Sargent 80 Series panic and emergency egress hardware

Technical Details

Door Handing Reference

Parts List Illustration