The Genie 990880GT is a genuine OEM Star Lock Washer, 3/4 E designed for Genie AL and RL series light towers, including the AL4000, AL5000, RL4000, AL4, AL5, and AL5 with Vertical Mast models. As a factory-sourced part, this washer meets the same dimensional and material standards as the original hardware it replaces. Cross-reference part number 990880GT against your machine's parts manual to confirm it is the correct fastener for your application before ordering.
Key Features
- Correct 3/4 E Star Profile — The external star tooth pattern and 3/4 sizing match the original specification exactly, ensuring proper seating and locking engagement on assembly.
- Broad Light Tower Fitment — Compatible with Genie AL4, AL4000, AL5, AL5 with Vertical Mast, AL5000, RL4, and RL4000 portable and towable light towers.
- Vibration Resistance — Star lock washers resist loosening under vibration and load cycling, maintaining fastener preload in the demanding conditions of portable jobsite equipment.
- Direct OEM Replacement — Installs in place of the original washer without modification, keeping hardware assemblies correct and complete.
A star lock washer is a hardened fastening component placed under a nut or bolt head to resist loosening caused by vibration and movement. The external star teeth bite into the mating surface when the fastener is tightened, creating mechanical resistance that holds the joint secure over time. When a lock washer is worn, deformed, or missing, fasteners can work loose during operation, compromising the integrity of the assembly. Replacing a damaged washer with the correct OEM part restores the designed clamping force and keeps the connection secure.
Part Details
| Part Number | 990880GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Star Lock Washer, 3/4 E |
Compatibility & Fitment
| Name | Models |
|---|---|
| AL4 | AL4 |
| AL5 | AL5 |
| AL5 with Vertical Mast | AL5 with Vertical Mast |
| AL4000 | AL4000 |
| AL5000 | AL5000 |
| RL4 | RL4 |
| RL4000 | RL4000 |
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.
