The Genie 1266791GT is a genuine OEM Thermostatic Valve designed for the Kohler engine fitted to the RL4 Vertical Mast light tower. Sourced directly from Genie, this part carries full OEM traceability, meaning it matches the original component in both specification and fitment. Cross-reference part number 1266791GT against your parts manual to confirm applicability before ordering. If your RL4 is showing signs of engine overheating or erratic operating temperature, this valve is the first component to inspect and replace.
Key Features
- Kohler-Matched OEM Spec — Built to the exact thermal regulation parameters of the Kohler engine platform, ensuring the valve opens and closes at the correct temperature threshold — not an approximation.
- Direct Engine Drop-In — Designed to seat precisely into the Kohler engine cooling circuit on the RL4, with no reworking of fittings or hose connections needed.
- Purpose-Built for the RL4 Light Tower — Confirmed fitment for the Genie RL4 Vertical Mast, giving you confidence that this is the right part for your specific unit.
- Protects Engine Longevity — A correctly functioning thermostatic valve keeps the engine operating within its optimal temperature band, protecting bearings, seals, and internal components from heat-related wear.
- Critical for Continuous-Run Operations — Light towers often run unattended for extended shifts; a failed or stuck-open valve can cause the engine to run cold and inefficiently, while a stuck-closed valve risks overheating and shutdown.
A thermostatic valve regulates coolant flow between the engine and its cooling circuit by responding to operating temperature. When the engine is cold, the valve remains closed, allowing coolant to circulate only within the engine block so it reaches working temperature faster. Once the engine warms to the correct threshold, the valve opens and directs coolant through the full cooling system to shed excess heat. A failed thermostatic valve — whether stuck open or stuck closed — disrupts this balance: a stuck-open valve causes the engine to run chronically cold and burn fuel inefficiently, while a stuck-closed valve traps heat and can rapidly lead to overheating. On a light tower like the RL4, where the Kohler engine may run for long, unattended periods, a properly functioning thermostatic valve is essential to stable, consistent power output and engine health.
Part Details
| Part Number | 1266791GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Thermostatic Valve, Kohler |
Compatibility & Fitment
| Name | Model |
|---|---|
| RL4 Vertical Mast | RL4 Vertical Mast |
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.
