The Genie 237708GT is a genuine OEM Perkins 403D-11G Thermostat designed for Genie and Terex portable light towers, including the AL4000, RL4000, TML-4000, AL4, and RL4. Sourced directly from Genie, this thermostat matches the original component specification for the Perkins 403D-11G engine found in these units, ensuring a proper drop-in replacement without guesswork. Cross-reference part number 237708GT against your parts manual to confirm fitment before ordering.
Key Features
- Genuine OEM Engine Cooling Accuracy — Built to the exact opening temperature and flow characteristics specified for the Perkins 403D-11G engine, not a generic approximation.
- Direct Engine Replacement — Installs into the thermostat housing of the Perkins 403D-11G just like the original, with no rework or adaptation to the coolant circuit.
- Broad Light Tower Coverage — Fits Genie and Terex AL4000, AL4, RL4000, RL4, and TML-4000 light towers powered by the Perkins 403D-11G engine.
- Protects Engine from Thermal Damage — A correctly functioning thermostat keeps the engine operating in its optimal temperature range, preventing overheating and cold-running wear that can shorten engine life.
- Operational Safety on the Jobsite — Engine overheating on a light tower can cause unexpected shutdown during critical night operations; maintaining a properly working thermostat supports consistent, uninterrupted power output.
A thermostat regulates engine coolant temperature by controlling the flow of coolant between the engine block and the radiator. When the engine is cold, the thermostat stays closed, allowing the engine to warm up quickly to its efficient operating range. Once the correct temperature is reached, it opens to circulate coolant through the radiator and prevent overheating. A failed or stuck thermostat — whether stuck open or closed — leads to poor fuel efficiency, accelerated engine wear, or dangerous overheating, making it one of the most critical small components in any engine-driven machine.
Part Details
| Part Number | 237708GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Perkins 403D-11G Thermostat |
Compatibility & Fitment
| Name | Model |
|---|---|
| AL4000 | AL4000 |
| RL4000 | RL4000 |
| TML-4000 | TML-4000 |
| AL4 | AL4 |
| RL4 | RL4 |
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.
