The Genie 75161GT is a genuine OEM Cummins B3.9 Thermostat Housing designed for Genie S-100, S-105, S-120, and S-125 telescopic boom lifts. Sourced directly from Genie, this part meets the exact specifications of the original component installed at the factory, ensuring a correct, trouble-free installation. Cross-reference 75161GT against your parts manual to confirm fitment before ordering. Built to work with the Cummins B3.9 engine found in these large-platform telescopic booms, this housing is the right-first-time solution for engine cooling system repairs.
Key Features
- Genuine OEM Engine Cooling Fit — Manufactured to Genie's exact specifications for the Cummins B3.9 engine, ensuring the thermostat seats and seals correctly within the cooling circuit.
- Direct OEM Replacement — Replaces the original housing with no adapting or reworking of coolant line connections required.
- Confirmed Fitment for Large Telescopic Booms — Fits Genie S-100, S-105, S-120, and S-125 telescopic boom lifts equipped with the Cummins B3.9 engine.
- Protects Engine Temperature Regulation — A sound housing keeps the thermostat properly seated and coolant flowing through the correct circuit, preventing overheating that can force costly unplanned shutdowns at height.
- Operational Safety at Elevation — On large telescopic booms operating at maximum platform height, engine overheating is a serious operational risk; a correctly functioning thermostat housing is a front-line defense against heat-related failures in the field.
The thermostat housing is the structural enclosure that holds the engine thermostat in place within the cooling system and directs coolant flow between the engine block and the radiator. When the engine is cold, the thermostat stays closed and the housing routes coolant in a bypass loop to help the engine reach operating temperature quickly. Once the engine warms up, the thermostat opens and the housing directs coolant out to the radiator for cooling. A cracked, warped, or leaking housing disrupts this flow, causing coolant loss, erratic temperature readings, and ultimately engine overheating — a particular concern on the large Cummins B3.9-powered telescopic booms where sustained heavy-duty cycles place constant demand on the cooling system.
Part Details
| Part Number | 75161GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Cummins B3.9 Thermostat Housing |
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.
