The Genie 75139GT is a genuine OEM Copar Radiator Drain Valve designed for Genie S-100, S-105, S-120, and S-125 telescopic boom lifts. As a direct OEM replacement, this valve is sourced to the same specification as the original component installed at the factory, ensuring a verified, hassle-free fit with existing cooling system connections on these large-platform booms. Cross-reference part number 75139GT against your parts manual to confirm compatibility before ordering. Whether you are completing a scheduled coolant service or replacing a leaking or damaged valve, this part restores the cooling system to full working order.
Key Features
- OEM-Matched Cooling System Component — Manufactured to the same specification as the original Copar drain valve, delivering consistent thread engagement, seal integrity, and flow control that generic substitutes may not match.
- Direct Cooling System Connection — Threads directly into the radiator drain port on compatible machines with no modification to hose routing or fittings required.
- Confirmed Fitment for Large Genie Telescopic Booms — Fits S-100, S-105, S-120, and S-125 boom lifts, covering Genie's heavy-duty telescopic range used across high-reach commercial and industrial applications.
- Controlled Coolant Release — Provides a reliable on/off drain point for coolant flushes and system maintenance, reducing the risk of spills and uncontrolled draining during service intervals.
- Thermal Management Integrity — A properly functioning drain valve supports complete coolant exchanges, which are critical to maintaining engine temperature stability on high-utilization booms operating in demanding environments.
- Genuine OEM Confidence — Sourced as an authorized Genie OEM part, ensuring traceability and compatibility without the guesswork of unverified cross-references.
A radiator drain valve is a small but essential component of a boom lift's engine cooling system. It provides a controlled access point for draining coolant during routine maintenance, system flushes, or repairs — without requiring hoses or fittings to be disconnected. When the drain valve fails, seizes, or develops a leak, it can make routine coolant service difficult or cause an uncontrolled coolant loss that puts the engine at risk of overheating. Replacing a faulty valve promptly keeps the cooling circuit properly sealed between service intervals and ensures technicians can drain and refill the system cleanly and completely when the time comes.
Part Details
| Part Number | 75139GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Copar Radiator Drain Valve |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-120 | S-120 |
| S-125 | S-125 |
| S-100 | S-100 |
| S-105 | S-105 |
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.
