The Genie 1264803GT is a genuine OEM Surge Brake Lockout Kit, DEMCO #5939 DEMCO DA91 Lockout Service Kit built for Genie TZ-34/20, TZ-50/30, and TZ-50 trailer-mounted articulating boom lifts. As a direct OEM replacement, this kit delivers the correct fit and material specification for the surge brake lockout system on these trailer-mounted units. It replaces items 1 and 2 of the DEMCO DA91 lockout assembly, making it the right service solution when those components require replacement. Verify part number 1264803GT against your machine's parts manual to confirm this kit covers your specific unit.
Key Features
- Genuine OEM Construction — Sourced directly from Genie, this kit meets the original material and dimensional specifications for the DEMCO DA91 surge brake lockout assembly.
- Targeted Component Replacement — Replaces items 1 and 2 of the DEMCO DA91 lockout assembly, allowing precise, component-level service without replacing the entire unit.
- Correct Fitment for TZ Trailer Booms — Designed for Genie TZ-34/20, TZ-50/30, and TZ-50 trailer-mounted articulating boom lifts; cross-reference 1264803GT against your parts manual before ordering.
- Brake Lockout Integrity — A properly functioning surge brake lockout prevents unintended brake engagement during towing maneuvers, keeping trailer operation smooth and predictable.
- Operational Safety — Surge brake lockout components are directly tied to trailer braking behavior; using the correct OEM kit ensures the lockout mechanism performs as intended and keeps towing operations compliant with the machine's design.
The surge brake lockout on a trailer-mounted boom lift disengages the trailer's surge braking system when the tow vehicle reverses, preventing the brakes from locking up during backing maneuvers. Over time, the service components within the DEMCO DA91 lockout assembly can wear or fail, causing the brakes to drag or the lockout to stop releasing correctly. This kit restores proper function by replacing the worn items with OEM-spec parts, so the surge brake system responds as designed during both forward towing and reverse operation.
Part Details
| Part Number | 1264803GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Surge Brake Lockout Kit, DEMCO #5939 DEMCO DA91 Lockout Service Kit |
Compatibility & Fitment
| Name | Models |
|---|---|
| TZ-34/20 | TZ-34/20 |
| TZ-50 | TZ-50 |
| TZ-50/30 | TZ-50/30 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
