The Genie 89872GT is a genuine OEM Counterbalance Valve designed for Genie telescopic and articulating boom lifts, including the S-40, S-45, TZ-34/20, and Z-62/40. As a direct OEM replacement, this valve is built to the same specifications as the original component installed at the factory, ensuring a correct, confident fit without guesswork. Cross-reference part number 89872GT against your machine's parts manual to confirm application before ordering. This component is the right solution for restoring hydraulic control integrity on affected boom models.
Key Features
- OEM Hydraulic Specification — Engineered to match the exact pressure-holding and load-control ratings of the original valve, maintaining proper hydraulic response in boom lift circuits.
- Direct Drop-In Replacement — Ports, thread size, and mounting configuration match the original installation, allowing this valve to seat correctly in the existing hydraulic circuit.
- Broad Boom Lift Coverage — Fits the Genie S-40 and S-45 telescopic booms, the TZ-34/20 trailer-mounted articulating boom, and the Z-62/40 articulating boom lift.
- Controlled Load Holding — A correctly functioning counterbalance valve prevents uncontrolled boom movement under load, supporting smooth, predictable operation during raising, lowering, and positioning.
- Critical Safety Function — On aerial boom lifts, a failed or leaking counterbalance valve can result in unintended boom drift or drop under load. Replacing a worn valve promptly is essential to maintaining safe working conditions at height.
A counterbalance valve is a hydraulic control component that holds a load in place and prevents uncontrolled movement when hydraulic pressure is reduced or lost. On boom lifts, it is typically installed in the lift or telescope cylinder circuit to ensure the boom stays in position and lowers in a controlled manner, even if a hose or fitting fails. When this valve wears out or develops internal leakage, operators may notice boom drift, slow or jerky movement, or a complete inability to hold position — all of which affect both productivity and operator safety at elevation.
Part Details
| Part Number | 89872GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Counterbalance Valve |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-40 | S-40 |
| S-45 | S-45 |
| TZ-34/20 | TZ-34/20 |
| Z-62/40 | Z-62/40 |
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.
