The Genie 28986-200GT is a genuine OEM Steel Keystock,.188 x 2" built for Genie TZ and TMZ series trailer-mounted articulating boom lifts, including the TZ-34/20, TMZ-50/30, and TMZ-34/19. As a direct OEM replacement, this keystock is manufactured to Genie's exact dimensional specifications, ensuring a correct, secure fit in the keyed shaft or hub assembly it was designed for. Cross-reference part number 28986-200GT against your machine's parts manual to confirm it is the right item for your unit before ordering.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to Genie's exact .188 x 2" specification, ensuring correct engagement with the mating keyway without filing, shimming, or rework.
- Direct OEM Replacement — Matches the original part character for character; installs in the same position as the part it replaces with no modification.
- Confirmed Fitment — Fits Genie TZ-34/20, TMZ-50/30, and TMZ-34/19 trailer-mounted articulating booms.
- Preserves Drive Integrity — A worn or undersized key allows shaft and hub to slip relative to each other; replacing it with the correct OEM piece restores positive, slip-free power transfer.
A keystock is a precision-cut steel bar that sits in matching slots — called keyways — machined into both a rotating shaft and its mating hub or gear. It locks the two components together so they turn as one unit, transferring torque without slipping. When a key is sheared, worn down, or incorrectly sized, the shaft and hub can rotate independently, causing loss of drive, erratic movement, or component damage. Replacing a failed key with the correct OEM piece — cut to the exact width, height, and length — restores positive engagement and protects the surrounding hardware from further wear.
Part Details
| Part Number | 28986-200GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Keystock, Steel, .188 x 2" |
Compatibility & Fitment
| Name | Models |
|---|---|
| TMZ-34/19 | TMZ-34/19 |
| TMZ-50/30 | TMZ-50/30 |
| TZ-34/20 | TZ-34/20 |
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.
